EP0406021A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Disk recording and reproducing device
Assignee: Sharp Corp
•
Filing: 1990-06-29
•
Granted: —
•
Expires: 2010-06-29
Abstract
Abstract A disk recording and reproducing device records and reproduces information on and from a magneto-optical disk (1) having absolute addresses and including an information recording area wherein pieces of information entered from external devices are recorded and a (Table of contents) TOC area wherein additional information with respect to each piece of the information recorded in the information recording area is recorded. The device includes operation keys for being operated by the user, a TOC memory for storing therein read/write control information for desired pieces of information entered through the operation keys, an optical head (3) and a magnetic coil (18) for recording in the TOC area the contents stored in the TOC memory as additional information and a controller (6) for controlling read/write operation to the disk according to the read/write control information. With the arrangement, the user can recognize necessary/unnecessary information and defective parts in the disk, and therefore make effective use thereof as well as maintaining secrecy of the information. A disk recording and reproducing device also includes a peak level detection circuit for detecting peak levels of music information, a TOC memory for storing therein peak level information with respect to the peak levels, and an optical head and a magnetic coil for recording in the TOC area the contents stored in the TOC memory as additional information, thereby permitting the user to readily perform preferable copying operation. A disk recording and reproducing device further comprises an optical head and a magnetic coil whereby an end mark is recorded in the rear end part of the additional information, and when a new piece of information is recorded in the information recording area, additional information with respect to the new piece of information is overwritten to add onto an end mark already recorded in the TOC area, and an end mark is newly recorded in a rear end part of the overwritten additional information. Thus, required reproducing time for the TOC area can be shortened. A disk recording and reproducing device includes an optical head for applying a light beam to the disk in recording information, operation keys, memory means wherein an absolute address corresponding to the time when the operation key is operated to initiate recording is stored, and optical head drive control means for moving the optical head back to a vicinity of a position indicated by the absolute address stored in the memory means and for keeping the optical head in a stand-by state by making it perform track-jumps at a position slightly before the position indicated by the absolute address, when re-recording operation of information is performed. Therefore, in re-recording information, the optical head is readily accessed to a vicinity of a recording start position of the former information.
Inventors
- 👤 Shigemi Maeda
- 👤 Shigeo Terashima
- 👤 Toshio Ishikawa
- 👤 Toshihisa Daiya-Haitsu Gakuenmae C-722 Deguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 04:40
CPC Classifications
G; G11; G11B; G11B7/00; G11B20/00; G11B20/00086; G11B20/00137; G11B11/00; G11B11/10; G11B11/105; G11B11/10502; G11B11/1055; G11B11/10556; G11B11/10595; G11B19/00; G11B19/02; G11B19/04; G11B20/00152; G11B20/10; G11B20/10527; G11B20/12; G11B20/1217; G11B20/1251; G11B20/18; G11B20/1883; G11B27/00; G11B27/02; G11B27/031; G11B27/034; G11B27/036; G11B27/038; G11B27/10; G11B27/102; G11B27/105; G11B27/11; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/32; G11B27/327; G11B27/329; G11B27/34; G11B27/36; G11B7/002; G11B7/0037; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/215; G11B2220/216; G11B2220/25; G11B2220/2525; G11B2220/2537; G11B2220/2545; G11B2220/60; G11B2220/65
Claims Analysis
Total Claims: 55
Claim 1
Independent Claim
121 words
A recording and reproducing device, which records and reproduces information on and from a re-writable recording disk having absolute addresses and comprising an information recording area wherein pieces of information entered from external devices are recorded and a TOC area wherein additional information with respect to each piece of the information recorded in the information recording area is recorded, comprising: operation keys which are operable by the user; memory means for storing therein read/write control information for desired pieces of information entered by the operation keys; recording means for recording in the TOC area the contents stored in the memory means as additional information; and control means for controlling read/write operation to the re-writable disk according to the read/write control information.
Claim 2
Dependent Claim
121 words
A recording and reproducing device, which records and reproduces information on and from a re-writable recording disk having absolute addresses and comprising an information recording area wherein pieces of information entered from external devices are recorded and a TOC area wherein additional information with respect to each piece of the information recorded in the information recording area is recorded, comprising: operation keys which are operable by the user; memory means for storing therein read/write control information for desired pieces of information entered by the operation keys; recording means for recording in the TOC area the contents stored in the memory means as additional information; and control means for controlling read/write operation to the re-writable disk according to the read/write control information.
Claim 3
Dependent Claim
64 words
A disk recording and reproducing device as set forth in claim 1, wherein the read/write control information includes write protection information entered through the operation keys with respect to desired pieces of the recorded information, and the control means is a controller for restraining writing operation in a write protection range which is an area in the disk wherein the writing operation is inhibited.
Claim 4
Dependent Claim
43 words
A disk recording and reproducing device as set forth in claim 2, wherein the write protection information is a piece of information whereby the writing operation is inhibited in an area in the information recording area, wherein the relevant recorded information is located.
Claim 5
Dependent Claim
50 words
A disk recording and reproducing device as set forth in claim 2, wherein the write protection information is a piece of information whereby the writing operation is inhibited in an area wherein the relevant recorded information is located and an area located between the relevant information and the succeeding information.
Claim 6
Dependent Claim
52 words
A disk recording and reproducing device as set forth in claim 2, wherein the additional information includes a program number, a recording start position, a recording end position or the length from the recording start position to the recording end position, and the write protection information of each piece of the information.
Claim 7
Dependent Claim
85 words
A disk recording and reproducing device as set forth in claim 2 further comprises a fader circuit for applying fade-out processing to a piece of information slightly before the end of a non-write-protection range when the piece of information is written in the non-write-protection range, and in the case where at least the capacity of the piece of information is greater than that of the non-write-protection range, the non-write-protection range being one of those ranges occupying the information recording area except the write protection ranges.
Claim 8
Dependent Claim
51 words
A disk recording and reproducing device as set forth in claim 1, wherein the read/write control information includes read protection information with respect to relevant recorded information and a pass word for releasing the read protection information, the read protection information and the pass word being entered through the operation keys.
Claim 9
Dependent Claim
37 words
A disk recording and reproducing device as set forth in claim 7, wherein the read protection information is a piece of information for inhibiting the reading operation of the relevant recorded information from the information recording area.
Claim 10
Dependent Claim
58 words
A disk recording and reproducing device as set forth in claim 8, wherein the additional information includes a program number, a recording start position, a recording end position or the length from the recording start position to the recording end position, and the read protection information of each piece of the information as well as the pass word.
Claim 11
Dependent Claim
60 words
A disk recording and reproducing device as set forth in claim 7, wherein the control means is a controller for controlling the device to inhibit reading operation of the relevant recorded information, when a pass word entered through the operation keys is compared with a pass word already recorded and if those pass words do not agree with each other.
Claim 12
Dependent Claim
84 words
A disk recording and reproducing device as set forth in claim 7, wherein the control means is a controller for controlling the device on the one hand to inhibit reading operation of the relevant recorded information, and on the other hand to automatically apply write protection to a range wherein the relevant recorded information is located, when a pass word entered through the operation keys is compared with a pass word already recorded and if those pass words do not agree with each other.
Claim 13
Dependent Claim
66 words
A disk recording and reproducing device as set forth in claim 7, wherein the control means is a controller for controlling the device to lower the quality of read signals in reading operation of the relevant recorded information, when a pass word entered through the operation keys is compared with a pass word already recorded and if those pass words do not agree with each other.
Claim 14
Dependent Claim
121 words
A recording and reproducing device, which records and reproduces information on and from a re-writable recording disk having absolute addresses and comprising an information recording area wherein pieces of information entered from external devices are recorded and a TOC area wherein additional information with respect to each piece of the information recorded in the information recording area is recorded, comprising: defective part recognition means for recognizing defective parts of the disk; memory means for storing therein defective part information from the defective part recognition means; recording means for recording in the TOC area contents stored in the memory means as additional information; and control means for inhibiting reproduction and recording of information in defective parts according to the defective part information.
Claim 15
Dependent Claim
121 words
A recording and reproducing device, which records and reproduces information on and from a re-writable recording disk having absolute addresses and comprising an information recording area wherein pieces of information entered from external devices are recorded and a TOC area wherein additional information with respect to each piece of the information recorded in the information recording area is recorded, comprising: defective part recognition means for recognizing defective parts of the disk; memory means for storing therein defective part information from the defective part recognition means; recording means for recording in the TOC area contents stored in the memory means as additional information; and control means for inhibiting reproduction and recording of information in defective parts according to the defective part information.
Claim 16
Dependent Claim
39 words
A disk recording and reproducing device as set forth in claim 13, wherein the additional information includes a program number, a recording start position, a recording end position, and the defective part information of each piece of the information.
Claim 17
Dependent Claim
35 words
A disk recording and reproducing device as set forth in claim 13, wherein the defective part recognition means and the control means are included in a controller which performs control operation on the whole device.
Claim 18
Dependent Claim
26 words
A disk recording and reproducing device as set forth in claim 3, claim 7, or claim 13, wherein the information includes data for use in computers.
Claim 19
Dependent Claim
23 words
A disk recording and reproducing device as set forth in claims 1 or claim 13, wherein the information includes pieces of music information.
Claim 20
Dependent Claim
111 words
A disk recording and reproducing device, which records and reproduces information on and from a re-writable disk having absolute addresses and comprising an information recording area wherein pieces of music information entered from external devices are recorded and a TOC area wherein additional information with respect to each piece of the music information recorded in the information recording area is recorded, comprising: a peak level detection circuit for detecting a peak level of each piece of the music information; memory means for storing therein peak level information with respect to the peak level; and recording means for recording contents stored in the memory means in the TOC area as additional information.
Claim 21
Dependent Claim
111 words
A disk recording and reproducing device, which records and reproduces information on and from a re-writable disk having absolute addresses and comprising an information recording area wherein pieces of music information entered from external devices are recorded and a TOC area wherein additional information with respect to each piece of the music information recorded in the information recording area is recorded, comprising: a peak level detection circuit for detecting a peak level of each piece of the music information; memory means for storing therein peak level information with respect to the peak level; and recording means for recording contents stored in the memory means in the TOC area as additional information.
Claim 22
Dependent Claim
33 words
A disk recording and reproducing device as set forth in claim 18, wherein the additional information includes a program number, a recording start position, a recording end position and the peak level information.
Claim 23
Dependent Claim
61 words
A disk recording and reproducing device as set forth in claim 18, wherein the peak level information includes peak level value information with regard to a peak level value of each piece of the music information and peak level generation positional information for indicating a peak level position of each piece of the music information located in the information recording area.
Claim 24
Dependent Claim
34 words
A disk recording and reproducing device as set forth in claim 18 further comprising a level control circuit for controlling the level of reproduced signals according to level setting information released from a controller.
Claim 25
Dependent Claim
31 words
A disk recording and reproducing device as set forth in claim 18 further comprising a reference signal generating section for generating a reference signal to be released to the external devices.
Claim 26
Dependent Claim
53 words
A disk recording and reproducing device as set forth in claim 22, wherein the reference signal generating section comprises a level control circuit, a switching device for switching a signal output in normal reproduction to a reference signal output interchangeably and an oscillator for releasing a constant level sinusoidal signal and the like.
Claim 27
Dependent Claim
35 words
A disk recording and reproducing device as set forth in claim 1, claim 13, or claim 18, wherein the memory means is a TOC memory which permits reading or writing operation therefrom or therein freely.
Claim 28
Dependent Claim
152 words
A disk recording and reproducing device, which records and reproduces information on and from a re-writable disk having absolute addresses and comprising an information recording area wherein pieces of music information entered from external devices are recorded and a TOC area wherein additional information with respect to each piece of the music information recorded in the information recording area is recorded, comprising recording means for (i) recording the music information in the information recording area, (ii) recording the additional information with respect to the music information in the TOC area and (iii) recording an end mark in the rear end part of the additional information in the TOC area, when a new piece of information is recorded in the information recording area, additional information with respect to the new piece of information is overwritten to add onto the end mark already recorded in a rear end part of the overwritten additional information.
Claim 29
Dependent Claim
152 words
A disk recording and reproducing device, which records and reproduces information on and from a re-writable disk having absolute addresses and comprising an information recording area wherein pieces of music information entered from external devices are recorded and a TOC area wherein additional information with respect to each piece of the music information recorded in the information recording area is recorded, comprising recording means for (i) recording the music information in the information recording area, (ii) recording the additional information with respect to the music information in the TOC area and (iii) recording an end mark in the rear end part of the additional information in the TOC area, when a new piece of information is recorded in the information recording area, additional information with respect to the new piece of information is overwritten to add onto the end mark already recorded in a rear end part of the overwritten additional information.
Claim 30
Dependent Claim
36 words
A disk recording and reproducing device as set forth in claim 25, wherein the additional information includes a program number, a recording start position, and a recording end position of each piece of the music information.
Claim 31
Dependent Claim
37 words
A disk recording and reproducing device as set forth in claim 26, wherein the end mark is expressed as a number recorded in a position where the program number is to be recorded in the TOC area.
Claim 32
Dependent Claim
45 words
A disk recording and reproducing device as set forth in claim 1, 13, 18, or 25, wherein the recording means may be an optical head for applying a light beam to the disk and a magnetic coil for applying a magnetic field to the disk.
Claim 33
Dependent Claim
158 words
A disk recording and reproducing device, which records and reproduces information on and from a writable recording disk comprising an information recording area wherein pieces of information entered from external devices are recorded, comprising: an optical head for applying a light beam to the disk in recording the information; operation keys for being operated by the user; memory means wherein an absolute address corresponding to the time when the operation keys are operated to initiate recording of information is stored; and optical head driving control means for moving the optical head back to a vicinity of a position indicated by the absolute address stored in the memory means and for keeping the optical head in a stand-by state by making it perform track-jumps at a position slightly before the position indicated by the absolute address when the user, after judging that something was wrong with the recording of the information, performs a predetermined operation to re-record the information.
Claim 34
Dependent Claim
158 words
A disk recording and reproducing device, which records and reproduces information on and from a writable recording disk comprising an information recording area wherein pieces of information entered from external devices are recorded, comprising: an optical head for applying a light beam to the disk in recording the information; operation keys for being operated by the user; memory means wherein an absolute address corresponding to the time when the operation keys are operated to initiate recording of information is stored; and optical head driving control means for moving the optical head back to a vicinity of a position indicated by the absolute address stored in the memory means and for keeping the optical head in a stand-by state by making it perform track-jumps at a position slightly before the position indicated by the absolute address when the user, after judging that something was wrong with the recording of the information, performs a predetermined operation to re-record the information.
Claim 35
Dependent Claim
20 words
A disk recording and reproducing device as set forth in claim 25 or 29, wherein the information includes music information.
Claim 36
Dependent Claim
23 words
A disk recording and reproducing device as set forth in claim 25 or 29, wherein the information includes data for use in computers.
Claim 37
Independent Claim
62 words
A method for controlling writing operation on a re-writable disk in a disk recording and reproducing device, comprising the steps of: restraining driving of an optical head for applying a light beam to the disk as well as returning the control operation, which has proceeded to a routine for recording information, to a routine for waiting for key input in a controller.
Claim 38
Independent Claim
62 words
A method for controlling writing operation on a re-writable disk in a disk recording and reproducing device, comprising the steps of: restraining driving of an optical head for applying a light beam to the disk as well as returning the control operation, which has proceeded to a routine for recording information, to a routine for waiting for key input in a controller.
Claim 39
Independent Claim
62 words
A method for controlling reading operation from a re-writable disk in a disk recording and reproducing device, comprising the steps of: restraining driving of an optical head for applying a light beam to the disk as well as returning a control operation, which has proceeded to a routine for reproducing information, to a routine for waiting for key input in a controller.
Claim 40
Independent Claim
62 words
A method for controlling reading operation from a re-writable disk in a disk recording and reproducing device, comprising the steps of: restraining driving of an optical head for applying a light beam to the disk as well as returning a control operation, which has proceeded to a routine for reproducing information, to a routine for waiting for key input in a controller.
Claim 41
Independent Claim
54 words
A method for controlling reading operation from a re-writable disk in a disk recording and reproducing device, comprising the steps of: restraining an output of reproduced signals as well as returning a control operation, which has proceeded to a routine for reproducing information, to a routine for waiting for key input in a controller.
Claim 42
Independent Claim
54 words
A method for controlling reading operation from a re-writable disk in a disk recording and reproducing device, comprising the steps of: restraining an output of reproduced signals as well as returning a control operation, which has proceeded to a routine for reproducing information, to a routine for waiting for key input in a controller.
Claim 43
Independent Claim
72 words
A method for applying read protection to a piece of information in a disk recording and reproducing device, comprising steps wherein: the user gives an instruction through operation keys; a controller stores in a TOC memory information given by the instruction; the user enters a pass word for releasing the read protection of the piece of information through the operation keys; and the controller stores the pass word in the TOC memory.
Claim 44
Independent Claim
72 words
A method for applying read protection to a piece of information in a disk recording and reproducing device, comprising steps wherein: the user gives an instruction through operation keys; a controller stores in a TOC memory information given by the instruction; the user enters a pass word for releasing the read protection of the piece of information through the operation keys; and the controller stores the pass word in the TOC memory.
Claim 45
Independent Claim
30 words
A method for lowering the quality of reproduced signals in a disk recording and reproducing device, whereby the low order bit of quantizing data is fixed in a D/A converter.
Claim 46
Independent Claim
30 words
A method for lowering the quality of reproduced signals in a disk recording and reproducing device, whereby the low order bit of quantizing data is fixed in a D/A converter.
Claim 47
Independent Claim
48 words
A method for lowering the quality of reproduced signals in a disk recording and reproducing device, whereby a variable filter is installed at a step after a D/A converter and the variable filter is controlled by a controller so as to narrow a frequency band for reproducing information.
Claim 48
Independent Claim
48 words
A method for lowering the quality of reproduced signals in a disk recording and reproducing device, whereby a variable filter is installed at a step after a D/A converter and the variable filter is controlled by a controller so as to narrow a frequency band for reproducing information.
Claim 49
Independent Claim
96 words
A method for generating a reference signal in a disk recording and reproducing device, comprising steps wherein: a controller releases to a level control circuit setting information for setting a level adjusting amount of the level control circuit according to a peak level value of a piece of music information; and the level control circuit performs a level adjusting operation on a constant level sinusoidal signal released from an oscillator in response to the setting information so that its level may become equivalent to the peak level, and releases a reference signal produced through the adjustment.
Claim 50
Independent Claim
96 words
A method for generating a reference signal in a disk recording and reproducing device, comprising steps wherein: a controller releases to a level control circuit setting information for setting a level adjusting amount of the level control circuit according to a peak level value of a piece of music information; and the level control circuit performs a level adjusting operation on a constant level sinusoidal signal released from an oscillator in response to the setting information so that its level may become equivalent to the peak level, and releases a reference signal produced through the adjustment.
Claim 51
Independent Claim
143 words
A method for recording a piece of information in a disk recording and reproducing device, comprising the steps of: starting a recording operation by an instruction to start recording as well as storing in memory means an absolute address indicating a recording start position; judging whether an instruction to suspend the recording operation is entered or not, when an instruction to complete the recording operation has not been entered; stopping the recording operation when the instruction to complete the recording operation is entered as well as storing in the memory means an absolute address indicating a recording suspension position; and accessing an optical head to a vicinity of the recording start position of a piece of former information as well as keeping the optical head in a stand-by state while making it perform track-jumps at a position slightly before the recording start position.
Claim 52
Independent Claim
143 words
A method for recording a piece of information in a disk recording and reproducing device, comprising the steps of: starting a recording operation by an instruction to start recording as well as storing in memory means an absolute address indicating a recording start position; judging whether an instruction to suspend the recording operation is entered or not, when an instruction to complete the recording operation has not been entered; stopping the recording operation when the instruction to complete the recording operation is entered as well as storing in the memory means an absolute address indicating a recording suspension position; and accessing an optical head to a vicinity of the recording start position of a piece of former information as well as keeping the optical head in a stand-by state while making it perform track-jumps at a position slightly before the recording start position.
Claim 53
Dependent Claim
111 words
A method for recording a piece of information in a disk recording and reproducing device as set forth in claim 39, further comprising the steps of: storing an absolute address indicating a recording end position when an instruction to finish the recording operation is entered; judging whether the recording operation is a normal recording operation or a re-recording operation; judging whether a recording end position of the piece of newly recorded information reaches a recording end position of the piece of former information when it is a re-recording operation; and recording soundless data up to the recording end position of the piece of former information if it does not reach there.
Claim 54
Independent Claim
60 words
A device for recording and reproducing information on and from a rewritable recording medium having a program information area and a TOC (table-of-contents) area and also having absolute address, wherein when over-writing, the information already in the TOC is not revised, but only added to, and an end data is over-written and re-recorded at the end of the added information.
Claim 55
Independent Claim
60 words
A device for recording and reproducing information on and from a rewritable recording medium having a program information area and a TOC (table-of-contents) area and also having absolute address, wherein when over-writing, the information already in the TOC is not revised, but only added to, and an end data is over-written and re-recorded at the end of the added information.
References Cited (Backward Citations)
No citation records indexed.
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