US4914526A
Expired / Lapsed
US
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Information recording system and apparatus
Assignee: Canon Inc
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Filing: 1988-12-22
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Granted: 1990-04-03
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Expires: 2008-12-22
Abstract
Abstract An information recording system and apparatus records on a recording medium an audio signal, which is time-base compressed at a predetermined compression ratio, together with a data signal indicative of the compression ratio. A start signal indicative of the start of the audio signal, the data signal, the audio signal and an end signal indicative of the end of the audio signal are recorded in this order. A recording medium recorded by such system and apparatus is disclosed. A reproduction apparatus is also disclosed which reproduces the information out of such recording medium.
Inventors
- 👤 Tsuguhide Sakata
- 👤 Norio Kimura
- 👤 Masahiro Takei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:56
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/12; G11B20/00007; G11B20/10527
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
100 words
An information recording apparatus comprising: (a) means for supplying a time base compressed information signal whose length is variable, a start signal indicative of the beginning of the time base compressed information signal, a control data signal which is used to control an expanding process of the time base compressed information signal, and an end signal indicative of the end of the time base compressed information signal; and (b) means for writing into a medium said start signal, said control data signal, said time based compressed information signal and said end signal, supplied by said supplying means in this order.
Claim 2
Dependent Claim
100 words
An information recording apparatus comprising: (a) means for supplying a time base compressed information signal whose length is variable, a start signal indicative of the beginning of the time base compressed information signal, a control data signal which is used to control an expanding process of the time base compressed information signal, and an end signal indicative of the end of the time base compressed information signal; and (b) means for writing into a medium said start signal, said control data signal, said time based compressed information signal and said end signal, supplied by said supplying means in this order.
Claim 3
Dependent Claim
25 words
An information recording apparatus according to claim 1, wherein said time base compressed information signal is an audio signal which is compressed in time base.
Claim 4
Dependent Claim
48 words
An information recording apparatus according to claim 1, wherein said supplying means includes: (a) means for producing a pair of said start signal and said control data signal; and (b) means for combining said time base compressed information signal with said start signal and said control data signal.
Claim 5
Dependent Claim
43 words
An information recording apparatus according to claim 1, wherein said writing means includes means for modulating said control start signal, said data signal, said time base compressed information signal and said end signal and writing these signals in this order on a medium.
Claim 6
Dependent Claim
25 words
An information recording apparatus according to claim 2, wherein said control data signal represents the time-base compression ratio for said time base compressed audio signal.
Claim 7
Independent Claim
130 words
An apparatus for recording a time base compressed information signal whose length is variable, comprising: (a) means for producing a pair of (1) a start signal indicative of the beginning of the time base compressed information signal and (2) an end signal indicative of the end of said time base compressed information signal to sandwich the time base compressed information signal therebetween; (b) means for providing a control data signal which is used to control an expanding process of the time base compressed information signal according to said time base compressed information signal; (c) means for combining said start signal, said control data signal, said time base compressed information signal, and said end signal in this order; and (d) means for recording the combined signal produced from said combining means.
Claim 8
Independent Claim
130 words
An apparatus for recording a time base compressed information signal whose length is variable, comprising: (a) means for producing a pair of (1) a start signal indicative of the beginning of the time base compressed information signal and (2) an end signal indicative of the end of said time base compressed information signal to sandwich the time base compressed information signal therebetween; (b) means for providing a control data signal which is used to control an expanding process of the time base compressed information signal according to said time base compressed information signal; (c) means for combining said start signal, said control data signal, said time base compressed information signal, and said end signal in this order; and (d) means for recording the combined signal produced from said combining means.
Claim 9
Dependent Claim
21 words
An apparatus according to claim 6, wherein said time based compressed information signal is an audio signal compressed in time base.
Claim 10
Dependent Claim
28 words
An apparatus according to claim 7, wherein said control data signal is a signal indicative of the time base compression ratio for said time based compressed audio signal.
Claim 11
Dependent Claim
28 words
An apparatus according to claim 6, wherein said recording means includes means for modulating said pair of said start signal and said end signal, and said information signal.
Claim 12
Dependent Claim
76 words
An apparatus according to claim 6, wherein said combining means includes: (a) memory means for storing said time based compressed information signal at a predetermined part of said memory means; (b) control means for storing said pair of said start signal and said end signal, one in each of the parts of said memory means adjacent to both sides of said predetermined part of said memory means where said time based compressed information signal is stored.
Claim 13
Dependent Claim
32 words
An apparatus according to claim 10, wherein said recording means includes: means for reading said start signal out of said memory part of said memory means where said start signal is stored.
Claim 14
Dependent Claim
136 words
An information recording method for recording on a medium a variable length audio signal compressed in time base at a predetermined compression ratio, and a control data signal indicative of the compression ratio which control data signal is used to control a expanding process, said method comprising the steps of: (a) a first step of recording on said medium a start signal indicative of start of said variable length audio signal; (b) a second step of recording said control data signal on said medium subsequent to said first step; (c) a third step of recording said variable length audio signal on said medium subsequent to said second step; and (d) a fourth step of recording an end signal indicative of the end of said variable length audio signal on said medium subsequent to said third step.
Claim 15
Dependent Claim
136 words
An information recording method for recording on a medium a variable length audio signal compressed in time base at a predetermined compression ratio, and a control data signal indicative of the compression ratio which control data signal is used to control a expanding process, said method comprising the steps of: (a) a first step of recording on said medium a start signal indicative of start of said variable length audio signal; (b) a second step of recording said control data signal on said medium subsequent to said first step; (c) a third step of recording said variable length audio signal on said medium subsequent to said second step; and (d) a fourth step of recording an end signal indicative of the end of said variable length audio signal on said medium subsequent to said third step.
Claim 16
Dependent Claim
19 words
An information recording method according to claim 12, wherein said first and second steps include FM modulation and recording.
Claim 17
Dependent Claim
15 words
An information recording method according to claim 12, wherein said medium is of a disc-type.
Claim 18
Dependent Claim
16 words
An information recording medium according to claim 12, wherein said medium includes a magnetic recording medium.
Claim 19
Independent Claim
125 words
A method of recording a time base compressed information signal whose length is variable, comprising the steps of: (a) producing a pair of (1) a start signal indicative of the beginning of the time base compressed information signal and (2) an end signal indicative of the end of the time base compressed information signal to sandwich said time base compressed information signal therebetween; (b) producing a control data signal which is used to control an expanding process of the time base compressed information signal according to said time base compressed information signal; (c) combining said start signal, said control data signal, said time base compressed information signal and the end signal in this order; and (d) recording the combined signal obtained through the combining step.
Claim 20
Independent Claim
125 words
A method of recording a time base compressed information signal whose length is variable, comprising the steps of: (a) producing a pair of (1) a start signal indicative of the beginning of the time base compressed information signal and (2) an end signal indicative of the end of the time base compressed information signal to sandwich said time base compressed information signal therebetween; (b) producing a control data signal which is used to control an expanding process of the time base compressed information signal according to said time base compressed information signal; (c) combining said start signal, said control data signal, said time base compressed information signal and the end signal in this order; and (d) recording the combined signal obtained through the combining step.
Claim 21
Dependent Claim
20 words
A method according to claim 16, wherein said variable length audio signal is an audio signal compressed in time base.
Claim 22
Dependent Claim
28 words
A method according to claim 17, wherein said control data signal is a signal indicative of the time base compression ratio for said time based compressed audio signal.
Claim 23
Dependent Claim
29 words
A method according to claim 11, wherein said pair of said start signal and said end signal is indicative of the status of said time base compressed information signal.
Claim 24
Dependent Claim
144 words
An information recording method for recording on a medium an information base compressed information signal whose length is variable together with a control data signal which is used to control an expanding process of the time base compressed information signal according to the time base compressed information signal, comprising the steps of: (a) a first step of recording on said medium a start signal indicative of the start of said time base compressed information signal on said medium; (b) a second step of recording said control data signal on said medium subsequent to said first step; (c) a third step of recording said time base compressed information on said medium subsequent to said second step; and (d) a fourth step of recording on said medium an end signal indicative of the end of said time base compressed information signal subsequent to said third step.
Claim 25
Dependent Claim
144 words
An information recording method for recording on a medium an information base compressed information signal whose length is variable together with a control data signal which is used to control an expanding process of the time base compressed information signal according to the time base compressed information signal, comprising the steps of: (a) a first step of recording on said medium a start signal indicative of the start of said time base compressed information signal on said medium; (b) a second step of recording said control data signal on said medium subsequent to said first step; (c) a third step of recording said time base compressed information on said medium subsequent to said second step; and (d) a fourth step of recording on said medium an end signal indicative of the end of said time base compressed information signal subsequent to said third step.
Claim 26
Dependent Claim
28 words
An information recording method according to claim 20, wherein said time base compressed information signal is an audio signal compressed in time base at a predetermined compression ratio.
Claim 27
Dependent Claim
20 words
An information recording method according to claim 21, wherein control data signal is a signal indicative of said compression ratio.
Claim 28
Dependent Claim
16 words
An information recording method according to claim 20, wherein said medium is a disk-like recording medium.
Claim 29
Dependent Claim
16 words
An information recording method according to claim 20, wherein said medium includes a magnetic recording medium.
Claim 30
Dependent Claim
132 words
A reproduction apparatus reproducing an audio signal out of a medium in which a start signal indicative of the start of a time base compressed audio signal obtained by compressing said audio signal in time base at a predetermined compression ratio, a data signal indicative of said compression ratio, said time base compressed audio signal and an end signal indicative of the end of said time base compressed audio signal are recorded in this order, comprising: (a) means for detecting the position on said medium where said start signal is recorded; (b) means for reading said data signal out of the detection result by said detecting means; and (c) means for expanding in time base said time base compressed audio signal, in accordance with the data signal read by said reading means.
Claim 31
Dependent Claim
132 words
A reproduction apparatus reproducing an audio signal out of a medium in which a start signal indicative of the start of a time base compressed audio signal obtained by compressing said audio signal in time base at a predetermined compression ratio, a data signal indicative of said compression ratio, said time base compressed audio signal and an end signal indicative of the end of said time base compressed audio signal are recorded in this order, comprising: (a) means for detecting the position on said medium where said start signal is recorded; (b) means for reading said data signal out of the detection result by said detecting means; and (c) means for expanding in time base said time base compressed audio signal, in accordance with the data signal read by said reading means.
Claim 32
Dependent Claim
24 words
A reproduction apparatus according to claim 25, wherein said detecting means includes means for detecting the position where said start signal rises or falls.
Claim 33
Dependent Claim
32 words
A reproduction apparatus according to claim 25, wherein said reading means includes means for detecting and reading said data signal in accordance with the position where said start signal rises or falls.
Claim 34
Dependent Claim
61 words
A recording medium on which a time base compressed audio signal obtained by compressing in time base an audio signal at a predetermined compression ratio is recorded in a block indicated by a start signal and an end signal, wherein a data signal indicative of said compression ratio is recorded between said start signal and said time base compressed audio signal.
Claim 35
Dependent Claim
61 words
A recording medium on which a time base compressed audio signal obtained by compressing in time base an audio signal at a predetermined compression ratio is recorded in a block indicated by a start signal and an end signal, wherein a data signal indicative of said compression ratio is recorded between said start signal and said time base compressed audio signal.
Claim 36
Dependent Claim
15 words
A recording medium according to claim 28, wherein said recording medium includes a disk-like medium.
Claim 37
Dependent Claim
15 words
A recording medium according to claim 28, wherein said medium includes a magnetic recording medium.
Claim 38
Dependent Claim
26 words
A recording medium according to claim 28, wherein said disk-like recording medium inlcudes a plurality of concentric tracks formed thereon, each track including four said blocks.
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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) | 1993-04-02 | 1993-10-02 | 1994-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-02 | 1997-10-02 | 1998-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-02 | 2001-10-02 | 2002-04-03 | $7700.00 | Window Closed / Lapsed |