Patent US5999906A successfully refreshed from Google Patents.
US5999906A
Expired / Lapsed
US
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Sample accurate audio state update
Assignee: Sony Corp
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Filing: 1998-03-04
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Granted: 1999-12-07
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Expires: 2018-03-04
Abstract
Abstract A method and apparatus for sample accurate parameter update management in digital audio recording/playback wherein a digital signal processor, memory, recording controller, and appropriate interfacing facilitate storage and retrieval of digital audio data samples continuously to achieve substantially seamless flow and sample accurate audio state updated at precisely designated times, all as required in such critical synchronizing applications as film dubbing.
Inventors
- 👤 Laura Mercs
- 👤 Paul M. Embree
- 👤 James S. Mercs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:26
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B20/00; G11B20/10; G11B20/10527; G11B27/02; G11B27/031; G11B27/034; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3036; G11B2020/10537; G11B2020/10592; G11B2220/00; G11B2220/20; G11B27/34
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
88 words
In a system for processing digital audio signals to provide sample accurate audio updating for substantially eliminating artifacts, the combination comprising: a digital signal processing subsystem for generating and managing audio sample data to provide time synchronization for substantially seamless audio sample data flow, including a digital signal input and a digital audio signal output; a memory for said digital signal processing subsystem; and a digital recorder controller in communication with said processing subsystem for providing audio state update messages to modify audio parameters at specified sample times.
Claim 2
Dependent Claim
88 words
In a system for processing digital audio signals to provide sample accurate audio updating for substantially eliminating artifacts, the combination comprising: a digital signal processing subsystem for generating and managing audio sample data to provide time synchronization for substantially seamless audio sample data flow, including a digital signal input and a digital audio signal output; a memory for said digital signal processing subsystem; and a digital recorder controller in communication with said processing subsystem for providing audio state update messages to modify audio parameters at specified sample times.
Claim 3
Dependent Claim
17 words
A system as set forth in claim 1, wherein said audio state update messages specify parameter changes.
Claim 4
Independent Claim
25 words
A system for processing digital signals as set forth in either of claims 1 or 2, wherein said audio is synchronized with other external data.
Claim 5
Independent Claim
23 words
A system for processing digital signals as set forth in either of claims 1 or 2, wherein said audio is synchronized with video.
Claim 6
Independent Claim
23 words
A system for processing digital signals as set forth in either of claims 1 or 2, wherein said audio is synchronized with film.
Claim 7
Independent Claim
24 words
A system for processing digital signals as set forth in either of claims 1 or 2, wherein said audio is associated with time codes.
Claim 8
Independent Claim
29 words
A system for processing digital signals as set forth in either of claims 1 or 2, wherein said audio is associated with time codes which are SMPTE time codes.
Claim 9
Dependent Claim
47 words
A system for processing digital signals as set forth in claim 1, further comprising means for generating an interrupt for each digital audio signal and updating the audio state upon each change of audio state responsive to the interrupt, such that the audio state is sample accurate.
Claim 10
Dependent Claim
56 words
A system for processing digital signals as set forth in claim 8, wherein the interrupt generating means further comprise means for providing a timing input to the processing subsystem, and associating time stamps with audio samples and audio sequences, to enable the processing subsystem to synchronize start and stop of playback and recording of audio samples.
Claim 11
Independent Claim
72 words
A method for processing digital audio signals to provide sample accurate audio updating for substantially eliminating artifacts, comprising: receiving an audio signal input; directing and storing said audio signal input in a memory; generating and managing audio sample data to provide time synchronization for substantially seamless audio sample data flow; and modifying audio parameters at specified sample times for controlling the audio by periodically updated parameter changes from a digital recorder controller.
Claim 12
Independent Claim
72 words
A method for processing digital audio signals to provide sample accurate audio updating for substantially eliminating artifacts, comprising: receiving an audio signal input; directing and storing said audio signal input in a memory; generating and managing audio sample data to provide time synchronization for substantially seamless audio sample data flow; and modifying audio parameters at specified sample times for controlling the audio by periodically updated parameter changes from a digital recorder controller.
Claim 13
Dependent Claim
22 words
A method as recited in claim 10, further including: monitoring the time codes and time stamps associated with said audio signal input.
Claim 14
Dependent Claim
40 words
A method as recited in claim 10, further comprising: generating an interrupt for each digital audio signal; and updating the audio state upon each change of audio state responsive to the interrupt, such that the audio state is sample accurate.
Claim 15
Dependent Claim
51 words
A method as recited in claim 12, wherein the step of generating the interrupt further comprises providing a timing input to a processing subsystem, and associating time stamps with audio samples and audio sequences, to enable the processing subsystem to synchronize start and stop of playback and recording of audio samples.
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) | 2002-12-06 | 2003-06-07 | 2003-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-06 | 2007-06-07 | 2007-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-06 | 2011-06-07 | 2011-12-07 | $7700.00 | Window Closed / Lapsed |