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US5960401A
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Method for exponent processing in an audio decoding system
Assignee: Cirrus Logic Inc
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Filing: 1997-11-14
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Granted: 1999-09-28
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Expires: 2017-11-14
Abstract
Abstract A method of processing exponent data in an audio decoder. A first block of audio data is received including encoded exponent data. The encoded exponent data is packed into packed encoded words and stored in memory. Exponents are generated from the packed encoded words in memory for processing the first block of audio data. A second block of audio data is received. A determination is made as to whether a reuse flag has been set for the second block, and if the reuse flag has been set, exponents are generated from the packed encoded words memory for processing the second block of data.
Inventors
- 👤 Raghunath Rao
- 👤 Miroslav Dokic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:32
CPC Classifications
G; G10; G10L; G10L19/00; G10L19/02; G10L19/032; G10L19/035; H; H04; H04B; H04B1/00; H04B1/66
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
A method of processing exponent data in a audio decoder comprising the steps of: receiving a first block of audio data including an encoded exponent data; packing the encoded exponent data into packed encoded words; storing the packed encoded words in memory; generating exponents from the packed encoded words in memory for processing the first block; receiving a second block of audio data including a reuse flag; determining if the reuse flag has been set for the second block; generating exponents from the packed encoded words in memory for processing the second block if the reuse flag has been set; and receiving, packing and storing the second block of encoded exponents of the reuse flag if not set.
Claim 2
Independent Claim
118 words
A method of processing exponent data in a audio decoder comprising the steps of: receiving a first block of audio data including an encoded exponent data; packing the encoded exponent data into packed encoded words; storing the packed encoded words in memory; generating exponents from the packed encoded words in memory for processing the first block; receiving a second block of audio data including a reuse flag; determining if the reuse flag has been set for the second block; generating exponents from the packed encoded words in memory for processing the second block if the reuse flag has been set; and receiving, packing and storing the second block of encoded exponents of the reuse flag if not set.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein said first block comprises a first block of a frame of audio data.
Claim 4
Dependent Claim
15 words
The method of claim 2 wherein said second block comprises a block of said frame.
Claim 5
Dependent Claim
53 words
The method of claim 2 wherein said first block of audio data includes multiple channels of encoded exponent data and said step of packing comprises the step of packing data from first, second and third channels into a single word, and the fourth, fifth and a coupling channel into a second single word.
Claim 6
Dependent Claim
55 words
The method of claim 1 wherein if the reuse flag has not been set, further comprising the steps of: packing the encoded exponent data of the second block into packed encoded words; storing the packed encoded words from the second block in memory; and generating exponents from the packed encoded words from the second block.
Claim 7
Dependent Claim
51 words
The method of claim 1 wherein the method of processing comprises the method of processing exponent data in a multiprocessing system and wherein said steps of packing, storing and generating are performed by a first selected processor and results of said step of generating are passed to a second selected processor.
References Cited (Backward Citations)
US5381143A
Cited
US5815206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-09-27 | 2003-03-29 | 2003-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-27 | 2007-03-29 | 2007-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-27 | 2011-03-29 | 2011-09-28 | $7700.00 | Window Closed / Lapsed |