US5390158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recording and reproducing compressed audio PCM data on and from optical disc using adjustable interleaving factor
Assignee: Sony Interactive Entertainment Inc
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Filing: 1993-09-29
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Granted: 1995-02-14
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Expires: 2013-09-29
Abstract
Abstract Compressed audio signal data are recorded on a CD-ROM disc at a data transfer rate higher than the standard rate. Information indicating the increased data transfer rate is recorded on the disc, and the compressed audio signal data as recorded are interleaved on the disc in accordance with; the increased data transfer rate.
Inventors
- 👤 Makoto Furuhashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:48
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/00007; G11B27/00; G11B27/005; G11B20/10; G11B20/10527; G11B2020/10537; G11B2020/10592; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/213; G11B2220/25; G11B2220/2537; G11B2220/2545
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
A method of recording audio data on a disc, said method comprising the steps of: rotating said disc at a predetermined speed to establish a predetermined data transfer rate; compressing said audio data; identifying said data transfer rate of said compressed audio data; interleaving said compressed audio data to form interleaved data and recording said interleaved data on said disc as a recorded audio signal using an interleaving factor that increases with an increase in said data transfer rate; and arranging identification data on said disc for identifying the data transfer rate of the recorded audio signal for use in data reproduction.
Claim 2
Independent Claim
102 words
A method of recording audio data on a disc, said method comprising the steps of: rotating said disc at a predetermined speed to establish a predetermined data transfer rate; compressing said audio data; identifying said data transfer rate of said compressed audio data; interleaving said compressed audio data to form interleaved data and recording said interleaved data on said disc as a recorded audio signal using an interleaving factor that increases with an increase in said data transfer rate; and arranging identification data on said disc for identifying the data transfer rate of the recorded audio signal for use in data reproduction.
Claim 3
Dependent Claim
22 words
A method as claimed in claim 1 comprising the step of employing adaptive differential pulse code modulation to compress the audio data.
Claim 4
Dependent Claim
26 words
A method as claimed in claim 1 comprising the step of increasing said interleaving factor in direct proportion to an increase in said data transfer rate.
Claim 5
Dependent Claim
25 words
A method as claimed in claim 1 comprising the step of doubling said interleaving factor in response to a doubling of said data transfer rate.
Claim 6
Independent Claim
79 words
A method of reproducing a compressed audio signal from a disc, said method comprising the steps of: identifying a data transfer rate of an audio signal recorded on a disc; rotating said disc at a speed that is directly proportional to the identified data transfer rate; and reproducing said compressed audio signal from said disc, said compressed audio signal being interleaved and arranged on said disc with an interleaving factor that is directly proportional to said data transfer rate.
Claim 7
Independent Claim
79 words
A method of reproducing a compressed audio signal from a disc, said method comprising the steps of: identifying a data transfer rate of an audio signal recorded on a disc; rotating said disc at a speed that is directly proportional to the identified data transfer rate; and reproducing said compressed audio signal from said disc, said compressed audio signal being interleaved and arranged on said disc with an interleaving factor that is directly proportional to said data transfer rate.
Claim 8
Dependent Claim
29 words
A method of reproducing a compressed audio signal as claimed in claim 5 comprising the step of employing adaptive differential pulse code modulation decompression to reproduce the audio signal.
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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) | 1998-02-13 | 1998-08-15 | 1999-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-13 | 2002-08-15 | 2003-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-13 | 2006-08-15 | 2007-02-14 | $7700.00 | Window Closed / Lapsed |