US6754624B2
Expired / Lapsed
US
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Codebook re-ordering to reduce undesired packet generation
Assignee: Qualcomm Inc
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Filing: 2001-02-13
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Granted: 2004-06-22
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Expires: 2021-02-13
Abstract
Abstract A method and apparatus for enhancing coding efficiency by reducing illegal or other undesirable packet generation while encoding a signal. The probability of generating illegal or other undesirable packets while encoding a signal is reduced by first analyzing a history of the frequency of codebook values selected while quantizing speech parameters. Codebook entries are then reordered so that the index/indices that create illegal or other undesirable packets contain the least frequently used entry/entries. Reordering multiple codebooks for various parameters further reduces the probability that an illegal or other undesirable packet will be created during signal encoding. The method and apparatus may be applied to reduce the probability of generating illegal null traffic channel data packets while encoding eighth rate speech.
Inventors
- 👤 Eddie-Lun Tik Choy
- 👤 Arasanipalai K. Ananthapadmanabhan
- 👤 Andrew P. DeJaco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:29
CPC Classifications
G; G10; G10L; G10L19/00; G10L19/04; G10L19/16; G10L19/167; G10L19/02
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
62 words
A method for reducing undesired packet generation while encoding a signal comprising: creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization while encoding the signal; and reordering the codebook by positioning the least frequently selected codebook entry in the codebook location associated with an undesired packet format.
Claim 2
Independent Claim
62 words
A method for reducing undesired packet generation while encoding a signal comprising: creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization while encoding the signal; and reordering the codebook by positioning the least frequently selected codebook entry in the codebook location associated with an undesired packet format.
Claim 3
Dependent Claim
39 words
The method of claim 1 wherein the creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization comprises analyzing a representative signal and noise sample.
Claim 4
Dependent Claim
36 words
The method of claim 1 wherein the creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization comprises analyzing an input signal.
Claim 5
Dependent Claim
21 words
The method of claim 1 wherein a plurality of codebooks associated with a plurality of parameters representing one signal are reordered.
Claim 6
Dependent Claim
16 words
The method of claim 1 wherein the undesired packet is a null traffic channel data packet.
Claim 7
Dependent Claim
16 words
The method of claim 5 wherein the null traffic channel data packet contains all binary ones.
Claim 8
Dependent Claim
17 words
The method of claim 5 wherein the null traffic channel data packet is encoded at eighth rate.
Claim 9
Dependent Claim
95 words
A speech coder for encoding speech comprising: a frequency history generator for creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization while encoding a speech signal; and a codebook recorder for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding a speech signal, wherein the codebook reorderer for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding a speech signal reduces the probability of producing an undesired packet.
Claim 10
Dependent Claim
95 words
A speech coder for encoding speech comprising: a frequency history generator for creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization while encoding a speech signal; and a codebook recorder for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding a speech signal, wherein the codebook reorderer for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding a speech signal reduces the probability of producing an undesired packet.
Claim 11
Dependent Claim
17 words
The speech coder of claim 8 wherein the undesired packet is a null traffic channel data packet.
Claim 12
Dependent Claim
17 words
The speech coder of claim 9 wherein the null traffic channel data packet contains all binary ones.
Claim 13
Dependent Claim
18 words
The speech coder of claim 9 wherein the null traffic channel data packet is encoded at eighth rate.
Claim 14
Dependent Claim
93 words
A base station capable of encoding a signal comprising: a frequency history generator for creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization of the signal; and a codebook reorderer for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding the signal, wherein the codebook reorderer for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding a signal reduces the probability of producing an undesired packet.
Claim 15
Dependent Claim
93 words
A base station capable of encoding a signal comprising: a frequency history generator for creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization of the signal; and a codebook reorderer for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding the signal, wherein the codebook reorderer for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding a signal reduces the probability of producing an undesired packet.
Claim 16
Dependent Claim
17 words
The base station of claim 12 wherein the undesired packet is a null traffic channel data packet.
Claim 17
Dependent Claim
17 words
The base station of claim 13 wherein the null traffic channel data packet contains all binary ones.
Claim 18
Dependent Claim
18 words
The base station of claim 13 wherein the null traffic channel data packet is encoded at eighth rate.
Claim 19
Dependent Claim
93 words
A user terminal capable of encoding a signal comprising: a frequency history generator for creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization of the signal; and a codebook reorderer for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding the signal, wherein the codebook reorderer for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding a signal reduces the probability of producing an undesired packet.
Claim 20
Dependent Claim
93 words
A user terminal capable of encoding a signal comprising: a frequency history generator for creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization of the signal; and a codebook reorderer for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding the signal, wherein the codebook reorderer for reordering the codebook to manipulate the probability of producing a predetermined packet format while encoding a signal reduces the probability of producing an undesired packet.
Claim 21
Dependent Claim
17 words
The user terminal of claim 16 wherein the undesired packet is a null traffic channel data packet.
Claim 22
Dependent Claim
17 words
The user terminal of claim 17 wherein the null traffic channel data packet contains all binary ones.
Claim 23
Dependent Claim
18 words
The user terminal of claim 17 wherein the null traffic channel data packet is encoded at eighth rate.
Claim 24
Dependent Claim
78 words
A computer-readable medium having instructions stored thereon to cause computers in a communication system to perform a method for reducing undesired packet generation while encoding a signal comprising: creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization while encoding the signal; and reordering the codebook by positioning the least frequently selected codebook entry in the codebook location associated with an undesired packet format.
Claim 25
Dependent Claim
78 words
A computer-readable medium having instructions stored thereon to cause computers in a communication system to perform a method for reducing undesired packet generation while encoding a signal comprising: creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization while encoding the signal; and reordering the codebook by positioning the least frequently selected codebook entry in the codebook location associated with an undesired packet format.
Claim 26
Dependent Claim
41 words
The article of manufacture of claim 20 wherein the creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization comprises analyzing a representative signal and noise sample.
Claim 27
Dependent Claim
38 words
The article of manufacture of claim 20 wherein the creating a statistical history of the frequency at which each codebook entry in a codebook for a given parameter is selected during parameter quantization comprises analyzing an input signal.
Claim 28
Dependent Claim
23 words
The article of manufacture of claim 20 wherein a plurality of codebooks associated with a plurality of parameters representing one signal are reordered.
Claim 29
Dependent Claim
18 words
The article of manufacture of claim 20 wherein the undesired packet is a null traffic channel data packet.
Claim 30
Dependent Claim
18 words
The article of manufacture of claim 24 wherein the null traffic channel data packet contains all binary ones.
Claim 31
Dependent Claim
19 words
The article of manufacture of claim 24 wherein the null traffic channel data packet is encoded at eighth rate.
References Cited (Backward Citations)
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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) | 2007-06-22 | 2007-12-22 | 2008-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-06-22 | 2011-12-22 | 2012-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-06-22 | 2015-12-22 | 2016-06-22 | $7700.00 | Window Closed / Lapsed |