US3761906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape system
Assignee: Cogar Corp
•
Filing: 1971-01-08
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Granted: 1973-09-25
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Expires: 1991-01-08
Abstract
Abstract A tape system having a loader for properly positioning a tape cartridge. The cartridge includes an internal supply reel which is adapted to rotate freely within the cartridge housing when the cartridge is mounted, by means of the loader, onto the supply drive spindle. A spring in the supply drive spindle forces the supply reel to assume a free rotation orientation. The position of the cartridge within the loader is such that lowering the loader causes an eyelet attached to the recording tape in the supply reel of the cartridge to be affixed to a clasp attached to a permanent leader element coupled to the tape deck take-up reel. A plurality of electromechanical sensors on the tape deck is responsive to loading and locking steps to initiate specific electronic actions relating to the tape drive and the data control functions performed by the system processor. The tape is guided past the read/write heads by two pairs of double-post guides. Changes in the tape speed are controlled by a DC command generator which includes a smoothing circuit for controlling a gradual change from one tape speed to another. A tracking window is provided for correctly recovering phase-modulated data from the tape even as the tape speed varies. A control circuit is provided for verifying the presence of a data block.
Inventors
- 👤 L Finster
- 👤 W Kelly
- 👤 W Sours
- 👤 T Sekse
- 👤 E Sevilla
- 👤 T Reader
- 👤 W Reynolds
- 👤 E Naegele
- 👤 R Petkovsek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:38
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/12; G11B20/1201; G11B15/00; G11B15/18; G11B15/44; G11B15/46; G11B15/60; G11B15/66; G11B15/67; G11B20/14; G11B20/1403; G11B20/1423
Claims Analysis
Total Claims: 84
Claim 1
Independent Claim
146 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive, to the appliction thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; said tracking window generating means including first means for generating a delay pulse responsive to the presence of each of successive data bits, second means responsive to the termination of each delay pulse for generating a window pulse, and means for controlling the duty cycle of each of said first and second generating means to remain constant.
Claim 2
Dependent Claim
146 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive, to the appliction thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; said tracking window generating means including first means for generating a delay pulse responsive to the presence of each of successive data bits, second means responsive to the termination of each delay pulse for generating a window pulse, and means for controlling the duty cycle of each of said first and second generating means to remain constant.
Claim 3
Dependent Claim
64 words
A tape system in accordance with claim 1 further including gate means for extending said data bits to said first generating means, means for enabling the operation of said gate means responsive to the presence of a window pulse, and means for blocking data bits from being transmitted to said first generating means until after successive window pulses are synchronized to said data bits.
Claim 4
Dependent Claim
66 words
A tape system, in accordance with claim 2 further including means responsive to a predetermined data bit sequence for operating said blocking means and for applying said predetermined data bit sequence directly to said first generating means, and means responsive to the termination of said predetermined data bit sequence for inhibiting the operation of said applying means and for disabling the operation of said blocking means.
Claim 5
Dependent Claim
81 words
A tape system in accordance with claim 1 wherein each of said first and second generating means is a controlled one-shot multivibrator, and said controlling means includes means for comparing the average value of the output of one of said first and second generating means to a predetermined value and for developing an error signal proportional to the difference therebetween, and menas for extending said error signal to a pulse-width control input of each of said first and second generating means.
Claim 6
Dependent Claim
57 words
A tape system in accordance with claim 4 wherein said extending means includes first and second means each connected to a respective one of said first and second control inputs for applying control signals thereto, and means for effecting changes in both of said control signals which are directly proportional to the magnitude of said error signal.
Claim 7
Dependent Claim
60 words
A tape system in accordance with claim 5 further including means for adjusting said predetermined value to determine the duty cycle of said one of said first and second generating means, and adjusting bias means coupled to the control input of the other of said first and second generating means for determining the duty cycle of said other generating means.
Claim 8
Dependent Claim
49 words
A tape system in accordance with claim 1 wherein said controlling means includes feedback means responsive to the average value of the output waveform of one of said first and second generating means for causing said one generating means to provide an output waveform having a constant average value.
Claim 9
Dependent Claim
35 words
A tape system in accordance with claim 7 wherein said feedback means is also operative to cause the other of said first and second generating means to provide an output waveform having a constant value.
Claim 10
Dependent Claim
148 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; precessing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said tracking window generating means including means for generating first and second related signals in synchronism with data read from said tape, and means for maintaining constant the duty cycles of said generating means.
Claim 11
Dependent Claim
148 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; precessing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said tracking window generating means including means for generating first and second related signals in synchronism with data read from said tape, and means for maintaining constant the duty cycles of said generating means.
Claim 12
Dependent Claim
171 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant.
Claim 13
Dependent Claim
171 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant.
Claim 14
Dependent Claim
45 words
A tape system in accordance with claim 10 wherein said controlling means includes feedback means responsive to the average value of the output waveform of said first generating means for causing said first generating means to provide an output waveform having a constant average value.
Claim 15
Dependent Claim
30 words
A tape system in accordance with claim 11 wherein said feedback means is also operative to cause said second generating means to provide an output waveform having a constant value.
Claim 16
Dependent Claim
140 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; and means for smoothing said step commands to supply smoothed command signals to said tape moving means; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capacitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means.
Claim 17
Dependent Claim
140 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; and means for smoothing said step commands to supply smoothed command signals to said tape moving means; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capacitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means.
Claim 18
Dependent Claim
47 words
A tape system in accordance with claim 13 wherein said variable resistance means includes at least one resistance means connected between input and output terminals of said operational amplifier, and switch means operative to effectively prevent said at least one resistance means from performing a feedback function.
Claim 19
Dependent Claim
28 words
A tape system in accordance with claim 14 wherein said variable resistance means further includes a resistor of predetermined magnitude permanently connected between said input and output terminals.
Claim 20
Dependent Claim
29 words
A tape system in accordance with claim 15 wherein said step command applying means selectively applies a step function of either polarity to said at least one input terminal.
Claim 21
Dependent Claim
38 words
A tape system in accordance with claim 15 wherein said at least one resistance means includes a pair of series-connected resistors, said switch means being operative to selectively short the junction of said pair of resistors to ground.
Claim 22
Dependent Claim
29 words
A tape system in accordance with claim 17 wherein said step command applying means selectively applies a step function of either polarity to said at least one input terminal.
Claim 23
Dependent Claim
54 words
A tape system in accordance with claim 15 wherein said operational amplifier has two input terminals, and said step command applying means includes source of potential and gating means for selectively coupling said source of potential to a selected one of said input terminals and coupling the other of said input terminals to ground.
Claim 24
Dependent Claim
36 words
A tape system in accordance with claim 19 wherein said gating means is further operative to selectively couple both of said input terminals to ground to cause a ground potential to appear at said output terminal.
Claim 25
Dependent Claim
38 words
A tape system in accordance with claim 14 wherein said at least one resistance means includes a pair of series-connected resistors, said switch means being operative to selectively short the junction of said pair of resistors to ground.
Claim 26
Dependent Claim
29 words
A tape system in accordance with claim 14 wherein said step command applying means selectively applies a step function of either polarity to said at least one input terminal.
Claim 27
Dependent Claim
56 words
A tape system in accordance with claim 14 wherein said step command applying means includes two output terminals having opposite polarity potentials thereon and gating means for selectively coupling a selected one of said output terminals to said at least one input terminal to determine the polarity of the signal at said operational amplifier output terminal.
Claim 28
Dependent Claim
47 words
A tape system in accordance with claim 23 wherein said gating means is further operative to selectively couple both of said step command applying means output terminals to said at least one input terminal to cause a ground potential to appear at said operational amplifier output terminal.
Claim 29
Dependent Claim
230 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for identifying the presence and absence of data blocks on said tape; said identifying means including first circuit means having two states; said first circuit means normally being in a first state, being responsive to a data bit for switching to a second state, and normally remaining in said second state for T1A seconds after the last data bit; second circuit means having two states; said second circuit means normally being in a first state; means for placing said second circuit means in a second state responsive to said first circuit means being in its first state, said second circuit means thereafter remaining in its second state until said first circuit means has been switched to and remained in its second state for T2 seconds; and means responsive to said second circuit means being in its first state for causing said first circuit means to remain in its second state for T1B seconds rather than T1A seconds after the last data bit.
Claim 30
Dependent Claim
230 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for identifying the presence and absence of data blocks on said tape; said identifying means including first circuit means having two states; said first circuit means normally being in a first state, being responsive to a data bit for switching to a second state, and normally remaining in said second state for T1A seconds after the last data bit; second circuit means having two states; said second circuit means normally being in a first state; means for placing said second circuit means in a second state responsive to said first circuit means being in its first state, said second circuit means thereafter remaining in its second state until said first circuit means has been switched to and remained in its second state for T2 seconds; and means responsive to said second circuit means being in its first state for causing said first circuit means to remain in its second state for T1B seconds rather than T1A seconds after the last data bit.
Claim 31
Dependent Claim
20 words
A tape system in accordance with claim 25 wherein T2 is greater than T1B and T1B is greater than T1A.
Claim 32
Dependent Claim
204 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said identifying means including first and second re-triggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 33
Dependent Claim
204 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said identifying means including first and second re-triggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 34
Dependent Claim
63 words
A tape system in accordance with claim 27 wherein the absence of a pulse at the output of said second multivibrator means controls the width of the pulse generated by said first multivibrator means to be greater than the width of the pulse generated by said fiRst multivibrator means in the presence of a pulse at the output of said second multivibrator means.
Claim 35
Dependent Claim
101 words
A tape system in accordance with claim 28 wherein the shorter of the two pulse widths generated by said first multivibrator means is related to the normal rate of the data bits read from said tape, said predetermined time interval is related to the time interval during which data bits should be detected at a normal rate to indicate the start of a data block, and the longer of the two pulse widths generated by said first multivibrator means is related to the time interval during which no data bit should be detected to indicate the end of a data block.
Claim 36
Dependent Claim
101 words
A tape system in accordance with claim 27 wherein the shorter of the two pulse widths generated by said first multivibrator means is related to the normal rate of the data bits read from said tape, said predetermined time interval is related to the time interval during which data bits should be detected at a normal rate to indicate the start of a data block, and the longer of the two pulse widths generated by said first multivibrator means is related to the time interval during which no data bit should be detected to indicate the end of a data block.
Claim 37
Dependent Claim
187 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said identifying means including first and second signal generating means, said first signal generating means being responsive to an input signal for generating at its output a first signal having a duration dependent upon the presence or absence of a signal at the output of said second signal generating means, said second signal generating means being operative to generate a second signal at its output which is a function of said first signal.
Claim 38
Dependent Claim
187 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said identifying means including first and second signal generating means, said first signal generating means being responsive to an input signal for generating at its output a first signal having a duration dependent upon the presence or absence of a signal at the output of said second signal generating means, said second signal generating means being operative to generate a second signal at its output which is a function of said first signal.
Claim 39
Dependent Claim
20 words
A tape system in accordance with claim 31 wherein each of said first and second signals is a two-value signal.
Claim 40
Dependent Claim
188 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said identifying means including first re-triggerable one-shot multivibrator means responsive to the presence of a data bit for generating at its output a first signal of predetermined duration, second re-triggerable one-shot multivibrator means for generating at its output a second signal of greater duration, and means for continuously applying trigger pulses to said second one-shot multivibrator means only in the absence of said first signal at the output of said first one-shot multivibrator means.
Claim 41
Dependent Claim
188 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said identifying means including first re-triggerable one-shot multivibrator means responsive to the presence of a data bit for generating at its output a first signal of predetermined duration, second re-triggerable one-shot multivibrator means for generating at its output a second signal of greater duration, and means for continuously applying trigger pulses to said second one-shot multivibrator means only in the absence of said first signal at the output of said first one-shot multivibrator means.
Claim 42
Dependent Claim
36 words
A tape system in accordance with claim 33 further including means responsive to the absence of said second signal at the output of said second one-shot multivibrator means for indicating the presence of a data block.
Claim 43
Dependent Claim
46 words
A tape system in accordance with claim 34 wherein the predetermined duration of sAid first signal exceeds the normal time interval between successive data bits read from said tape, and the time interval between successive trigger pulses is less than the duration of said first signal.
Claim 44
Dependent Claim
46 words
A tape system in accordance with claim 33 wherein the predetermined duration of said first signal exceeds the normal time interval between successive data bits read from said tape, and the time interval between successive trigger pulses is less than the duration of said first signal.
Claim 45
Dependent Claim
191 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper allgnment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said identifying means including first means for maintaining a first signal at its output as long as successive data bits are received within a first predetermined time interval, means for generating trigger pulses at a pre-set rate only in the absence of said first signal at the output of said first means, and second means for maintaining a second signal at its output as long as successive trigger pulses are generated within a second predetermined time interval.
Claim 46
Dependent Claim
191 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper allgnment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said identifying means including first means for maintaining a first signal at its output as long as successive data bits are received within a first predetermined time interval, means for generating trigger pulses at a pre-set rate only in the absence of said first signal at the output of said first means, and second means for maintaining a second signal at its output as long as successive trigger pulses are generated within a second predetermined time interval.
Claim 47
Dependent Claim
35 words
A tape system in accordance with claim 37 further including means responsive to the absence of said second signal at the output of said second means for indicating the presence of a data bit sequence.
Claim 48
Dependent Claim
20 words
A tape system in accordance with claim 38 wherein said second predetermined time interval exceeds said first predetermined time interval.
Claim 49
Dependent Claim
24 words
A tape system in accordance with claim 39 wherein said trigger pulses, when generated, occur at intervals shorter than said first predetermined time interval.
Claim 50
Dependent Claim
33 words
A tape system in accordance with claim 40 further including means responsive to the absence of said second signal at the output of said second means for extending said first predetermined time interval.
Claim 51
Dependent Claim
33 words
A tape system in accordance with claim 39 further including means responsive to the absence of said second signal at the output of said second means for extending said first predetermined time interval.
Claim 52
Dependent Claim
20 words
A tape system in accordance with claim 37 wherein said second predetermined time interval exceeds said first predetermined time interval.
Claim 53
Dependent Claim
24 words
A tape system in accordance with claim 43 wherein said trigger pulses, when generated, occur at intervals shorter than said first predetermined time interval.
Claim 54
Dependent Claim
33 words
A tape system in accordance with claim 44 further including means responsive to the absence of said second signal at the output of said second means for extending said first predetermined time interval.
Claim 55
Dependent Claim
33 words
A tape system in accordance with claim 37 further including means responsive to the absence of said second signal at the output of said second means for extending said first predetermined time interval.
Claim 56
Dependent Claim
114 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence oF data blocks on said tape.
Claim 57
Dependent Claim
114 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence oF data blocks on said tape.
Claim 58
Dependent Claim
243 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape, means for smoothing said step commands to supply smoothed command signals to said tape moving means; and means for identifying the presence and absence of data blocks on said tape; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capacitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means; said identifying means including first and second retriggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 59
Dependent Claim
243 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape, means for smoothing said step commands to supply smoothed command signals to said tape moving means; and means for identifying the presence and absence of data blocks on said tape; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capacitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means; said identifying means including first and second retriggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 60
Dependent Claim
249 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant; said identifying means including first and second re-triggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 61
Dependent Claim
249 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant; said identifying means including first and second re-triggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 62
Dependent Claim
220 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; and means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capaCitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant.
Claim 63
Dependent Claim
220 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; and means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capaCitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant.
Claim 64
Dependent Claim
175 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded and unloaded positions; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant.
Claim 65
Dependent Claim
175 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded and unloaded positions; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant.
Claim 66
Dependent Claim
198 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for identifying the presence and absence of data blocks on said tape; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded and unloaded positions; said identifying means including first and second re-triggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 67
Dependent Claim
198 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for identifying the presence and absence of data blocks on said tape; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded and unloaded positions; said identifying means including first and second re-triggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 68
Dependent Claim
169 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; and means for smoothing said step commands to supply smoothed command signals to said tape moving means; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded and unloaded positions; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capacitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means.
Claim 69
Dependent Claim
169 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; and means for smoothing said step commands to supply smoothed command signals to said tape moving means; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded and unloaded positions; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capacitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means.
Claim 70
Dependent Claim
195 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; and means for smoothing said step commands to supply smoothed command signals to said tape moving means; said guiding means including at least a pair of tape guide means each for providing a guide surface only for a respective edge of said tape; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded and unloaded positions; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capacitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means.
Claim 71
Dependent Claim
195 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; and means for smoothing said step commands to supply smoothed command signals to said tape moving means; said guiding means including at least a pair of tape guide means each for providing a guide surface only for a respective edge of said tape; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded and unloaded positions; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capacitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means.
Claim 72
Dependent Claim
201 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and guiding means including at least a pair of tape guide means each for providing a guide surface only for a respective edge of said tape; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded an unloaded positions; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant.
Claim 73
Dependent Claim
201 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and guiding means including at least a pair of tape guide means each for providing a guide surface only for a respective edge of said tape; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded an unloaded positions; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant.
Claim 74
Dependent Claim
224 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for identifying the presence and absence of data blocks on said tape; said guiding means including at least a pair of tape guide means each for providing a guide surface only for a respective edge of said tape; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded and unloaded positions; said identifying means including first and second re-triggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 75
Dependent Claim
224 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, and means for guiding said tape past said reading means in proper alignment therewith; processing means for extending to said tape moving means commands representative of required motion of said tape; and means for identifying the presence and absence of data blocks on said tape; said guiding means including at least a pair of tape guide means each for providing a guide surface only for a respective edge of said tape; said tape deck being adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded and unloaded positions; said identifying means including first and second re-triggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 76
Dependent Claim
323 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, aNd means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capacitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant; said identifying means including first and second re-triggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 77
Dependent Claim
323 words
A tape system comprising a tape deck, said tape deck having means for moving tape containing data thereon responsive to the application thereto of command signals, means for reading data recorded on said tape, aNd means for guiding said tape past said reading means in proper alignment therewith; processing means for generating step commands representative of required motion of said tape; means for smoothing said step commands to supply smoothed command signals to said tape moving means; means for generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape; and means for identifying the presence and absence of data blocks on said tape; said smoothing means including an operational amplifier having at least one input terminal and an output terminal, said output terminal being coupled to said tape moving means, means for applying a step command to said at least one input terminal, capacitor means connected in a feedback configuration with said operational amplifier, and variable resistance means connected in parallel with said capacitor means; said tracking window generating means including first means for generating a delay interval responsive to the presence of each of successive data bits read from said tape, second means responsive to the termination of each delay interval for generating a window pulse, and means for controlling the duty cycle of said first generating means to remain constant; said identifying means including first and second re-triggerable one-shot multivibrator means, said first multivibrator means being responsive to a data bit for generating at its output a first pulse of a width dependent upon the presence or absence of a pulse at the output of said second multivibrator means, said second multivibrator means being operative to generate a second pulse at its output which begins at the trailing edge of said first pulse and terminates after a predetermined time interval has elapsed following the leading edge of said first pulse.
Claim 78
Dependent Claim
38 words
A tape system in accordance with claim 57 wherein said tape deck is adapted to operate on tape contained in a cartridge and further including loading means for containing a cartridge and movable between loaded and unloaded positions.
Claim 79
Dependent Claim
32 words
A tape system in accordance with claim 58 wherein said tape deck further includes means for aligning a cartridge for proper tape movement when said loading means is in its loaded position.
Claim 80
Dependent Claim
155 words
A tape system comprising first and second reel means each for wrapping tape therearound starting from respective ends of the tape, first and second motor means for applying torques to respective ones of said first and second reel means in respective directions which oppose each other with respect to movement of said tape between said first and second reel means, means disposed between said first and second reel means for engaging and moving said tape in a selected direction so that one of said first and second reel means turns to wrap tape therearound and the other of said first and second reel means turns in opposition to the torque applied thereto to allow tape to be withdrawn therefrom, and means operative when said tape is moved by said tape moving means for increasing the torque applied by that one of said first and second motor means which is associated with said one reel means.
Claim 81
Dependent Claim
155 words
A tape system comprising first and second reel means each for wrapping tape therearound starting from respective ends of the tape, first and second motor means for applying torques to respective ones of said first and second reel means in respective directions which oppose each other with respect to movement of said tape between said first and second reel means, means disposed between said first and second reel means for engaging and moving said tape in a selected direction so that one of said first and second reel means turns to wrap tape therearound and the other of said first and second reel means turns in opposition to the torque applied thereto to allow tape to be withdrawn therefrom, and means operative when said tape is moved by said tape moving means for increasing the torque applied by that one of said first and second motor means which is associated with said one reel means.
Claim 82
Dependent Claim
54 words
A tape system in accordance with claim 60 further including means responsive to a predetermined maximum amount of tape being wrapped around said first reel means during motion of said tape for disabling the operation of said tape moving means and for controlling an increased torque to be applied by said second motor means.
Claim 83
Independent Claim
79 words
A method for operating a tape system comprising the steps of moving a tape containing data thereon responsive to command signals, reading data recorded on said tape, generating step commands representative of required motion of said tape, smoothing said step commands to derive smoothed command signals, generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape, and identifying the presence and absence of data blocks on said tape.
Claim 84
Independent Claim
79 words
A method for operating a tape system comprising the steps of moving a tape containing data thereon responsive to command signals, reading data recorded on said tape, generating step commands representative of required motion of said tape, smoothing said step commands to derive smoothed command signals, generating a tracking window responsive to data bits read from said tape for identifying successive data bits read from said tape, and identifying the presence and absence of data blocks on said tape.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |