US3598966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clock generation error-checking means
Assignee: NCR Voyix Corp
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Filing: 1968-06-27
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Granted: 1971-08-10
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Expires: 1988-06-27
Abstract
Abstract Means for preventing an undetected loss of data from tape being sensed by a tape-sensing device, which loss may occur when a sprocket hole being used for clocking purposes is obstructed or defective so that a clock signal cannot be generated therefrom. The addition of a sprocket-hole-sensing device and electrical circuitry for generation of an error signal in response to failure to sense the sprocket hole enables a check to be made in advance as to whether or not the sprocket hole of a frame of data to be subsequently sensed is unobstructed. If a satisfactory signal is obtained from sensing of the sprocket hole, then sensing of the tape by the tape-sensing device proceeds normally. However, if the sprocket hole in question is obstructed or defective, then the normal sensing signal is not produced by the added sprocket-hole-sensing device, and an error signal is generated.
Inventors
- 👤 Jerry A Combs
- 👤 John W Fecher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:18
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/01; G06K7/016; G06K7/0163
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
349 words
An information-sensing device for sensing perforations in a clock channel and a plurality of data channels of a record medium as it traverses a sensing station having a clock-sensing channel for sensing clock perforations and a plurality of data-sensing channels for sensing data perforations, comprising, in combination, a supporting member on which the record medium is adapted to move, said supporting member including first, second, and third clock apertures therein, positioned in a single sensing channel for sensing of perforations in that channel, and displaced with respect to each other in the direction of record medium movement, the distance between the leading edges of the first and second of said clock apertures being slightly greater than the distance between the leading edges of successive perforations in the clock channel of the record medium, and the distance between the leading edges of the second and third of said apertures being slightly less than the distance between the leading edges of successive perforations in the clock channel of the record medium, said supporting member also including a plurality of data apertures therein, with their leading edges located in a line perpendicular to the direction of record medium movement and positioned between the leading edges of the first and second clock apertures; first, second, and third radiation-sensitive clock-sensing means capable of translating radiation directed thereon, through perforations in the clock channel of the record medium, and through said first, second, and third clock apertures, into electrical clock-sensing signals; a plurality of radiation-sensitive data-sensing meaNs capable of translating radiation directed thereon, through perforations in the data channels of the record medium and through said data apertures, into electrical data-sensing signals; clock-generating means for combining the clock-sensing signals generated by said first and second radiation-sensitive clocksensing means to produce a clock signal for sampling the datasensing signals; and error signal means for producing an error signal in the event that no sensing signal is generated by the third radiationsensitive clock-sensing means at the time that the sensing signals generated by the first and second radiation-sensitive clock-sensing means are combined to produce a clock signal.
Claim 2
Dependent Claim
349 words
An information-sensing device for sensing perforations in a clock channel and a plurality of data channels of a record medium as it traverses a sensing station having a clock-sensing channel for sensing clock perforations and a plurality of data-sensing channels for sensing data perforations, comprising, in combination, a supporting member on which the record medium is adapted to move, said supporting member including first, second, and third clock apertures therein, positioned in a single sensing channel for sensing of perforations in that channel, and displaced with respect to each other in the direction of record medium movement, the distance between the leading edges of the first and second of said clock apertures being slightly greater than the distance between the leading edges of successive perforations in the clock channel of the record medium, and the distance between the leading edges of the second and third of said apertures being slightly less than the distance between the leading edges of successive perforations in the clock channel of the record medium, said supporting member also including a plurality of data apertures therein, with their leading edges located in a line perpendicular to the direction of record medium movement and positioned between the leading edges of the first and second clock apertures; first, second, and third radiation-sensitive clock-sensing means capable of translating radiation directed thereon, through perforations in the clock channel of the record medium, and through said first, second, and third clock apertures, into electrical clock-sensing signals; a plurality of radiation-sensitive data-sensing meaNs capable of translating radiation directed thereon, through perforations in the data channels of the record medium and through said data apertures, into electrical data-sensing signals; clock-generating means for combining the clock-sensing signals generated by said first and second radiation-sensitive clocksensing means to produce a clock signal for sampling the datasensing signals; and error signal means for producing an error signal in the event that no sensing signal is generated by the third radiationsensitive clock-sensing means at the time that the sensing signals generated by the first and second radiation-sensitive clock-sensing means are combined to produce a clock signal.
Claim 3
Dependent Claim
239 words
An information-sensing device for sensing perforations in at least one channel in a record medium as it traverses a sensing station having at least one sensing channel for sensing said perforations, comprising, in combination, a supporting member on which the record medium is adapted to move, said member including first, second, and third apertures therein, positioned in a single sensing channel for sensing of perforations in that channel, and displaced with respect to each other in the direction of record medium movement; first, second, and third radiation-sensitive means capable of translating radiation directed thereon, through perforations in the record medium, and through said first, second, and third apertures, into sensing signals, said third radiation-sensitive means and associated aperture being located upstream of the first and second radiation-sensitive means and associated apertures with respect to movement of the record medium to provide an anticipatory error signal before a defective perforation reaches the first and second radiation-sensitive means and associated apertures; clock-generating means for combining the sensing signals generated by said first and second radiation-sensitive means to produce a clock signal; and error signal means connected to the clock-generating means and to the radiation-sensitive means associated with said third aperture for producing an error signal in the event that no sensing signal is generated by the third radiation-sensitive means at the time that the sensing signals generated by the first and second radiation-sensitive means are combined to produce a clock signal.
Claim 4
Dependent Claim
239 words
An information-sensing device for sensing perforations in at least one channel in a record medium as it traverses a sensing station having at least one sensing channel for sensing said perforations, comprising, in combination, a supporting member on which the record medium is adapted to move, said member including first, second, and third apertures therein, positioned in a single sensing channel for sensing of perforations in that channel, and displaced with respect to each other in the direction of record medium movement; first, second, and third radiation-sensitive means capable of translating radiation directed thereon, through perforations in the record medium, and through said first, second, and third apertures, into sensing signals, said third radiation-sensitive means and associated aperture being located upstream of the first and second radiation-sensitive means and associated apertures with respect to movement of the record medium to provide an anticipatory error signal before a defective perforation reaches the first and second radiation-sensitive means and associated apertures; clock-generating means for combining the sensing signals generated by said first and second radiation-sensitive means to produce a clock signal; and error signal means connected to the clock-generating means and to the radiation-sensitive means associated with said third aperture for producing an error signal in the event that no sensing signal is generated by the third radiation-sensitive means at the time that the sensing signals generated by the first and second radiation-sensitive means are combined to produce a clock signal.
Claim 5
Dependent Claim
44 words
The information-sensing device of claim 2, in which the distance between the leading edges of the first and second of the apertures in said supporting member differs from the distance between the leading edges of successive perforations in said channel of the record medium.
Claim 6
Dependent Claim
63 words
The information-sensing device of claim 2, in which said supporting member also includes a plurality of data apertures therein, said sensing device also including a plurality of radiation-sensitive data-sensing means capable of translating radiation directed thereon, through data perforations in the record medium, and through said data apertures, into data-sensing signals, which are capable of being sampled under control of said clock signal.
Claim 7
Dependent Claim
196 words
An information-sensing device for sensing indicia in at least one channel in a record medium as it traverses a sensing station having at least one sensing channel for sensing said indicia, comprising, in combination, first, second, and third sensing means positioned in a single sensing channel for sensing of indicia in that channel, and displaced with respect to each other in the direction of record medium movement, said sensing means being capable of producing sensing signals in response to said indicia, said third sensing means being located upstream of the first and second sensing means with respect to movement of the record medium to provide an anticipatory error signal before a defective indicium reaches the first and second sensing means; clock-generating means for combining the sensing signals generated by said first and second sensing means to produce a clock signal; and error signal means connecteD to the clock-generating means and to the third sensing means for producing an error signal in the event that no sensing signal is generated by the third sensing means at the time that the sensing signals generated by the first and second sensing means are combined to produce a clock signal.
Claim 8
Dependent Claim
196 words
An information-sensing device for sensing indicia in at least one channel in a record medium as it traverses a sensing station having at least one sensing channel for sensing said indicia, comprising, in combination, first, second, and third sensing means positioned in a single sensing channel for sensing of indicia in that channel, and displaced with respect to each other in the direction of record medium movement, said sensing means being capable of producing sensing signals in response to said indicia, said third sensing means being located upstream of the first and second sensing means with respect to movement of the record medium to provide an anticipatory error signal before a defective indicium reaches the first and second sensing means; clock-generating means for combining the sensing signals generated by said first and second sensing means to produce a clock signal; and error signal means connecteD to the clock-generating means and to the third sensing means for producing an error signal in the event that no sensing signal is generated by the third sensing means at the time that the sensing signals generated by the first and second sensing means are combined to produce a clock signal.
Claim 9
Dependent Claim
25 words
The information-sensing device of claim 5, in which the sensing means are radiation-sensitive elements for sensing perforations which constitute the indicia in the record medium.
Claim 10
Dependent Claim
31 words
The information-sensing device of claim 5, in which the distance between the first and second sensing means differs from the distance between successive indicia in said channel of the record medium.
Claim 11
Dependent Claim
42 words
The information-sensing device of claim 5, in which said sensing device also includes a plurality of data-sensing means capable of translating data indicia in the record medium into data-sensing signals, which are capable of being sampled under control of said clock signal.
Claim 12
Dependent Claim
33 words
The information-sensing device of claim 8, in which said data-sensing means are arranged in a line perpendicular to the direction of record medium movement, and positioned between the first and second sensing means.
Claim 13
Dependent Claim
266 words
An information-sensing device for sensing perforations in at least one channel in a record medium as it traverses a sensing station having at least one sensing channel for sensing said perforations, comprising, in combination, a supporting member on which the record medium is adapted to move, said member including first, second and third apertures therein, positioned in a single sensing channel for sensing of perforations in that channel, and displaced with respect to each other in the direction of record medium movement, the distance between the leading edges of the first and second apertures in said supporting member being slightly greater than the distance between the leading edges of successive perforations in said channel of the record medium, and the distances between the leading edges of the second and third of the apertures in said supporting member being slightly less than the distance between the leading edges of successive perforations in said channel of the record medium; first, second, and third radiation-sensitive means capable of translating radiation directed thereon, through perforations in the record medium, and through said first, second, and third apertures, into sensing signals; clock-generating means for combining the sensing signals generated by said first and second radiation-sensitive means to produce a clock signal; and error signal means connected to the clock-generating means and to the radiation-sensitive means associated with said third aperture for producing an error signal in the event that no sensing signal is generated by the third radiation-sensitive means at the time that the sensing signals generated by the first and second radiation-sensitive means are combined to produce a clock signal.
Claim 14
Dependent Claim
266 words
An information-sensing device for sensing perforations in at least one channel in a record medium as it traverses a sensing station having at least one sensing channel for sensing said perforations, comprising, in combination, a supporting member on which the record medium is adapted to move, said member including first, second and third apertures therein, positioned in a single sensing channel for sensing of perforations in that channel, and displaced with respect to each other in the direction of record medium movement, the distance between the leading edges of the first and second apertures in said supporting member being slightly greater than the distance between the leading edges of successive perforations in said channel of the record medium, and the distances between the leading edges of the second and third of the apertures in said supporting member being slightly less than the distance between the leading edges of successive perforations in said channel of the record medium; first, second, and third radiation-sensitive means capable of translating radiation directed thereon, through perforations in the record medium, and through said first, second, and third apertures, into sensing signals; clock-generating means for combining the sensing signals generated by said first and second radiation-sensitive means to produce a clock signal; and error signal means connected to the clock-generating means and to the radiation-sensitive means associated with said third aperture for producing an error signal in the event that no sensing signal is generated by the third radiation-sensitive means at the time that the sensing signals generated by the first and second radiation-sensitive means are combined to produce a clock signal.
Claim 15
Dependent Claim
208 words
An information-sensing device for sensing indicia in at least one channel in a record medium as it traverses a sensing station having at least one sensing channel for sensing said indicia, comprising in combination, first, second and third sensing means positioned in a single sensing channel for sensing of indicia in that channel, and displaced with respect to each other in the direction of record medium movement, said sensing means being capable of producing sensing signals in response to said indicia, the distance between the first and second sensing means being slightly greater than the distance between successive indicia in said channel of the record medium, and the distance between the second and third sensing means being slightly less than the distance between successive indicia in said channel of the record medium; clock-generating means for combining the sensing signals generated by said first and second sensing means to produce a clock signal; and error signal means connected to the clock-generating means and to the third sensIng means for producing an error signal in the event that no sensing signal is generated by the third sensing means at the time that the sensing signals generated by the first and second sensing means are combined to produce a clock signal.
Claim 16
Dependent Claim
208 words
An information-sensing device for sensing indicia in at least one channel in a record medium as it traverses a sensing station having at least one sensing channel for sensing said indicia, comprising in combination, first, second and third sensing means positioned in a single sensing channel for sensing of indicia in that channel, and displaced with respect to each other in the direction of record medium movement, said sensing means being capable of producing sensing signals in response to said indicia, the distance between the first and second sensing means being slightly greater than the distance between successive indicia in said channel of the record medium, and the distance between the second and third sensing means being slightly less than the distance between successive indicia in said channel of the record medium; clock-generating means for combining the sensing signals generated by said first and second sensing means to produce a clock signal; and error signal means connected to the clock-generating means and to the third sensIng means for producing an error signal in the event that no sensing signal is generated by the third sensing means at the time that the sensing signals generated by the first and second sensing means are combined to produce a clock signal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |