Patent EP0202945A2 successfully refreshed from Google Patents.
EP0202945A2
Expired / Lapsed
EP
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Recording method and apparatus
Assignee: Canon Inc
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Filing: 1986-05-22
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Granted: —
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Expires: 2006-05-22
Abstract
Abstract Disclosed is a method and apparatus for recording an information signal, wherein when an audio signal is recorded, a start signal and an end signal indicating a unit recording duration of the audio signal are recorded together with the audio signal, and when no audio signal is present in the recording duration, the start and end signals have an inverse relationship to each other with respect to a reference level.
Inventors
- 👤 Tguguhide Sakata
- 👤 Norio Kimura
- 👤 Masahiro Takei
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 14:43
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/12; G11B20/1217; G11B20/1251; G11B20/00007; G11B20/10527; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B2020/10537; G11B2020/10546; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2508
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
86 words
A method of recording an information signal, comprising the steps of: (A) dividing the information signal according to a predetermined unit recording duration; (B) producing a pair of a start signal and an end signal for each recording duration and controlling the start signal and the end signal so that the start signal and the end signal have an inverse relation for the recording duration to which no information signal is applied; and (C) recording the information signal and the start and the end signal pairs.
Claim 2
Independent Claim
86 words
A method of recording an information signal, comprising the steps of: (A) dividing the information signal according to a predetermined unit recording duration; (B) producing a pair of a start signal and an end signal for each recording duration and controlling the start signal and the end signal so that the start signal and the end signal have an inverse relation for the recording duration to which no information signal is applied; and (C) recording the information signal and the start and the end signal pairs.
Claim 3
Dependent Claim
30 words
A method according to claim 1, further comprising the steps of: storing the information signal to divide said information following step, said step being executed prior to said dividing step.
Claim 4
Dependent Claim
37 words
A method according to claim 1, wherein said producing step controls said start signal and said end signal so that said start signal and said end signal have a non-inverse relation when the information signal is applied.
Claim 5
Dependent Claim
18 words
A method according to claim 1, wherein said recording step is means for FM modulating said information signal.
Claim 6
Independent Claim
107 words
An apparatus for recording an information signal, comprising: (A) means for dividing the information signal according to a predetermined unit recording duration; (B) means for producing a pair of a start signal and an end signal for each recording duration, said producing means including control means for controlling the start signal and the end signal so that the start signal and the end signal have an inverse relation for the recording duration to which no information signal is applied; (C) means for combining the information signal and the start and the end signal pairs; and (D) means for recording the combined signal produced from said combining means.
Claim 7
Independent Claim
107 words
An apparatus for recording an information signal, comprising: (A) means for dividing the information signal according to a predetermined unit recording duration; (B) means for producing a pair of a start signal and an end signal for each recording duration, said producing means including control means for controlling the start signal and the end signal so that the start signal and the end signal have an inverse relation for the recording duration to which no information signal is applied; (C) means for combining the information signal and the start and the end signal pairs; and (D) means for recording the combined signal produced from said combining means.
Claim 8
Dependent Claim
24 words
An apparatus according to claim 5, further comprising; (E) means for memorizing the information signal, said memorizing means being coupled to said dividing means.
Claim 9
Dependent Claim
14 words
An apparatus according to claim 5, wherein said information signal is an audio signal.
Claim 10
Dependent Claim
14 words
An apparatus according to claim 7, wherein said audio signal is a compressed signal.
Claim 11
Dependent Claim
17 words
An apparatus according to claim 6, wherein said memorizing means is arranged to compress said information signal.
Claim 12
Dependent Claim
37 words
An apparatus according to claim 5, wherein said producing means produces said start signal and said end signal so that said start signal and said end signal have a non-inverse relation when said information signal is applied.
Claim 13
Dependent Claim
111 words
ll. An apparatus for recording an audio signal, comprising: A) means for compressing said audio signal along a time base; B) means for dividing said audio signal compressed by said compressing means according to a predetermined unit recording duration; C) means for producing a pair of a start signal and an end signal for each recording duration, said producing means including control means for controlling the start signal and the end signal so that the start signal and the end signal have inverse relation for the recording duration to which audio signal is applied; and D) means for recording said compressed audio signal and the start signal and the end signal.
Claim 14
Dependent Claim
111 words
ll. An apparatus for recording an audio signal, comprising: A) means for compressing said audio signal along a time base; B) means for dividing said audio signal compressed by said compressing means according to a predetermined unit recording duration; C) means for producing a pair of a start signal and an end signal for each recording duration, said producing means including control means for controlling the start signal and the end signal so that the start signal and the end signal have inverse relation for the recording duration to which audio signal is applied; and D) means for recording said compressed audio signal and the start signal and the end signal.
Claim 15
Dependent Claim
34 words
An apparatus according to claim 11, wherein said recording means includes: a) means for combining said compressed signal and the start signal and the end signal; and b) means for recording said compressed signal.
Claim 16
Dependent Claim
27 words
An apparatus according to claim 11, wherein said recording means includes: modulating means for frequency modulating said compressed signal and the start signal and the end signal.
Claim 17
Dependent Claim
52 words
An apparatus according to claim 11, wherein said compressing means includes: a) memory means for memorizing said audio signal at a first predetermined rate; and b) readout means for reading out said audio signal memorized by said memory means at a second predetermined rate which is higher than said first predetermined rate.
Claim 18
Dependent Claim
14 words
An apparatus according to claim 11, wherein said memory means has four recording durations.
Claim 19
Independent Claim
82 words
An apparatus for recording an audio signal on a medium to be divided into blocks, including: a) first means for applying the audio signal to each block and adding a start signal to a start position of the block and an end signal to an end position thereof; and b) second means for controlling said start signal and said end signal so that said start signal and said end signal have inverse relation when no audio signal is applied to the block.
Claim 20
Independent Claim
82 words
An apparatus for recording an audio signal on a medium to be divided into blocks, including: a) first means for applying the audio signal to each block and adding a start signal to a start position of the block and an end signal to an end position thereof; and b) second means for controlling said start signal and said end signal so that said start signal and said end signal have inverse relation when no audio signal is applied to the block.
Claim 21
Dependent Claim
30 words
An apparatus according to claim 16, further comprising: means for controlling said start signal to be higher than a reference level when the audio signal is applied to the block.
Claim 22
Dependent Claim
52 words
An apparatus according to claim 16, wherein said first means includes: means for dividing said audio signal according to a predetermined unit; means for producing a pair of the start signal and the end signal; and means for combining said audio signal and said pair of the start and the end signal.
Claim 23
Dependent Claim
42 words
An apparatus according to claim 18, wherein said second means controls said producing means to produce the start signal and the end signal having an inverse relation with respect to the reference level when no audio signal is applied to the block.
Claim 24
Dependent Claim
34 words
20: An apparatus according to claim 16, wherein said second means is means for controlling the start signal to be lower than the reference level when the audio signal is applied to the block.
Claim 25
Dependent Claim
53 words
A recording medium on which an audio signal is recorded in a block indicated by a start signal and an end signal, wherein the start signal and the end signal are recorded to have an inverse relation with respect to a reference level in the block to which no audio signal is applied.
Claim 26
Dependent Claim
53 words
A recording medium on which an audio signal is recorded in a block indicated by a start signal and an end signal, wherein the start signal and the end signal are recorded to have an inverse relation with respect to a reference level in the block to which no audio signal is applied.
Claim 27
Dependent Claim
14 words
A medium according to claim 21, wherein said recording medium has a disk shape.
Claim 28
Dependent Claim
15 words
A medium according to claim 21, wherein said recording medium is a magnetic recording medium.
Claim 29
Dependent Claim
24 words
A medium according to claim 21, wherein the audio signal recorded on said recording medium is an audio signal compressed along a time base.
Claim 30
Dependent Claim
24 words
A medium according to claim 22, wherein concentric tracks are formed on said disk-shaped recording medium, and four blocks are formed in each track.
Claim 31
Dependent Claim
30 words
A medium according to-claim 21, wherein the start signal higher than said reference level is recorded in the block of said recording medium in which the audio signal is recorded.
Claim 32
Dependent Claim
155 words
A recording medium, on which an audio signal is recorded in a block indicated by a start signal and an end signal, characterized in that in a block in which the audio signal is recorded, when the recording of the audio signal recorded in the block is carried over into the next block, said start signal is at a higher level than a reference level and said end signal is at a lower level than the reference level; in a block in which teh audio signal is recorded, when the audio signal recorded in the block does not recorded in the next block, said start signal and said end signal are set at higher level than the reference level; and in a block in which no audio signal is recorded, said start signal is at a lower level than the reference level and said end signal is at a higher level than the reference level.
Claim 33
Dependent Claim
155 words
A recording medium, on which an audio signal is recorded in a block indicated by a start signal and an end signal, characterized in that in a block in which the audio signal is recorded, when the recording of the audio signal recorded in the block is carried over into the next block, said start signal is at a higher level than a reference level and said end signal is at a lower level than the reference level; in a block in which teh audio signal is recorded, when the audio signal recorded in the block does not recorded in the next block, said start signal and said end signal are set at higher level than the reference level; and in a block in which no audio signal is recorded, said start signal is at a lower level than the reference level and said end signal is at a higher level than the reference level.
Claim 34
Dependent Claim
14 words
A medium according to claim 27, wherein said recording medium has a disk shape.
Claim 35
Dependent Claim
15 words
A medium according to claim 27, wherein said recording medium is a magnetic recording medium.
Claim 36
Dependent Claim
24 words
A medium according to claim 27, wherein the audio signal recorded on said recording medium is an audio signal compressed along a time base.
Claim 37
Dependent Claim
24 words
A medium according to claim 28, wherein concentric tracks are formed on said disk-shaped recording medium, and four blocks are formed in each track.
References Cited (Backward Citations)
No citation records indexed.
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