Patent US5343456A successfully refreshed from Google Patents.
US5343456A
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US
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Digital audio signal reproducing apparatus
Assignee: Sony Corp
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Filing: 1992-05-21
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Granted: 1994-08-30
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Expires: 2012-05-21
Abstract
Abstract A digital audio signal reproducing apparatus is provided in which, when reading out and reproducing compressed digital audio data recorded on an optical disc 2, readout from memory 22 is discontinued responsive to an input at a air-selecting and playback mode changeover key at a key input 8. If a repeat operation is commanded at the key input 8, silent data is written in memory 22 after the end of readout of the compressed data of the currently reproduced audio signals from the optical disc 2. In this manner, a muted state is produced instantaneously responsive to operation of the air selecting and playback mode changeover key. Also a muted state is introduced between airs in case of a repeat operation.
Inventors
- 👤 Yasuaki Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:12
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/10527; G11B27/00; G11B27/005; G11B27/007; G11B27/10; G11B27/102; G11B27/105; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3063; G11B20/00007; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/215; G11B2220/216; G11B2220/25; G11B2220/2525; G11B2220/2537; G11B2220/2545
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
235 words
An apparatus for reproducing audio signals digitally recorded on a disc shaped recording medium comprising: driving means for rotating a disc shaped recording medium; reading means for reading in bursts from the recording medium digitally recorded audio signals, the reading means generating at a first transfer rate playback data corresponding to the digitally recorded audio signals; memory means for sequentially storing the playback data; readout means for sequentially reading at a second transfer rate playback data stored in the memory means, the second transfer rate less than the first transfer rate; playback control means operative to cause the reading means to generate playback data when the volume of playback data stored in the memory means is less than a predetermined volume; selection input means for generating access data representative of selected digitally recorded audio signals; and control means operative, in response to access data representative of newly selected digitally recorded audio signals, to terminate reading by the reading means of the digitally encoded audio signals from a first location of the recording medium, to delete playback data read from the first location and stored within the memory means, to sequentially store within the memory means data representative of substantially silent audio signals, and to commence reading by the reading means of digitally encoded audio signals from a second location of the recording medium, the second location corresponding to the newly selected digitally recorded audio signals.
Claim 2
Independent Claim
235 words
An apparatus for reproducing audio signals digitally recorded on a disc shaped recording medium comprising: driving means for rotating a disc shaped recording medium; reading means for reading in bursts from the recording medium digitally recorded audio signals, the reading means generating at a first transfer rate playback data corresponding to the digitally recorded audio signals; memory means for sequentially storing the playback data; readout means for sequentially reading at a second transfer rate playback data stored in the memory means, the second transfer rate less than the first transfer rate; playback control means operative to cause the reading means to generate playback data when the volume of playback data stored in the memory means is less than a predetermined volume; selection input means for generating access data representative of selected digitally recorded audio signals; and control means operative, in response to access data representative of newly selected digitally recorded audio signals, to terminate reading by the reading means of the digitally encoded audio signals from a first location of the recording medium, to delete playback data read from the first location and stored within the memory means, to sequentially store within the memory means data representative of substantially silent audio signals, and to commence reading by the reading means of digitally encoded audio signals from a second location of the recording medium, the second location corresponding to the newly selected digitally recorded audio signals.
Claim 3
Dependent Claim
19 words
The apparatus for reproducing audio signals of claim 1 wherein the disc shaped recording medium comprises: a magneto-optical disk.
Claim 4
Dependent Claim
20 words
The apparatus for reproducing audio signals of claim 1 wherein the selection input means further comprises: a plurality of keys.
Claim 5
Dependent Claim
36 words
The apparatus for reproducing audio signals of claim 1 wherein the control means, upon sensing undecodable playback data, resets the reading means to re-read a portion of the recording medium corresponding to the undecodable playback data.
Claim 6
Dependent Claim
33 words
The apparatus for reproducing audio signals of claim 4 wherein the predetermined volume of playback data corresponds to a playback time interval in excess of a time interval for resetting the reading means.
Claim 7
Independent Claim
181 words
An apparatus for reproducing audio signals digitally recorded on a disc shaped recording medium comprising: driving means for rotating a disc shaped recording medium; reading means for reading in bursts from the recording medium digitally recorded audio signals, the reading means generating at a first transfer rate playback data corresponding to the digitally recorded audio signals; memory means for sequentially storing the playback data; readout means for sequentially reading at a second transfer rate playback data stored in the memory means, the second transfer rate less than the first transfer rate; playback control means to operative to cause the reading means to generate playback data when the volume of playback data stored in the memory means is less than a predetermined volume; selection input means for generating access data representative of selected digitally recorded audio signals; and control means operative, in response to access data representative of a selection of repeated digitally recorded audio signals, to sequentially store within the memory means, between playback data representative of each repeat of digitally recorded audio signals, data representative of substantially silent audio signals.
Claim 8
Independent Claim
181 words
An apparatus for reproducing audio signals digitally recorded on a disc shaped recording medium comprising: driving means for rotating a disc shaped recording medium; reading means for reading in bursts from the recording medium digitally recorded audio signals, the reading means generating at a first transfer rate playback data corresponding to the digitally recorded audio signals; memory means for sequentially storing the playback data; readout means for sequentially reading at a second transfer rate playback data stored in the memory means, the second transfer rate less than the first transfer rate; playback control means to operative to cause the reading means to generate playback data when the volume of playback data stored in the memory means is less than a predetermined volume; selection input means for generating access data representative of selected digitally recorded audio signals; and control means operative, in response to access data representative of a selection of repeated digitally recorded audio signals, to sequentially store within the memory means, between playback data representative of each repeat of digitally recorded audio signals, data representative of substantially silent audio signals.
Claim 9
Dependent Claim
20 words
The apparatus for reproducing audio signals of claim 6 wherein the disc shaped recording medium further comprises: a magneto-optical disk.
Claim 10
Dependent Claim
20 words
The apparatus for reproducing audio signals of claim 6 wherein the selection input means further comprises: a plurality of keys.
Claim 11
Dependent Claim
36 words
The apparatus for reproducing audio signals of claim 6 wherein the control means, upon sensing undecodable playback data, resets the reading means to re-read a portion of the recording medium corresponding to the undecodable playback data.
Claim 12
Dependent Claim
33 words
The apparatus for reproducing audio signals of claim 9 wherein the predetermined volume of playback data corresponds to a playback time interval in excess of a time interval for resetting the reading means.
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) | 1997-08-29 | 1998-02-28 | 1998-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-29 | 2002-02-28 | 2002-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-29 | 2006-02-28 | 2006-08-30 | $7700.00 | Window Closed / Lapsed |