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US Patent 9425820 Vector quantization with non-uniform distributions

Patent 9425820 was granted and assigned to Mozilla Corporation on August, 2016 by the United States Patent and Trademark Office.

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Patent
Patent
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Patent attributes

Current Assignee
Mozilla Corporation
Mozilla Corporation
1
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
94258201
Patent Inventor Names
Jean-Marc Valin1
Timothy B. Terriberry1
Date of Patent
August 23, 2016
1
Patent Application Number
142952121
Date Filed
June 3, 2014
1
Patent Citations Received
‌
US Patent 12132503 Lossless compression for multivariate selective encoding
2
Patent Primary Examiner
‌
Tan V. Mai
1
Patent abstract

Systems and methods are described for encoding quantized vector parameters in a bitstream are described. An exemplary method may include receiving a vector of integers used in a data compression codebook, the sum of the integers equaling a pulse sum. An initial expected magnitude may be determined for a first integer, the initial expected magnitude being based on the pulse sum, a distribution parameter, and a value corresponding to a number of integers in the vector. The actual magnitude of the first integer may be encoded based on the initial expected magnitude of the first integer. The pulse sum may be adjusted using the encoded actual magnitude. Also, the value corresponding to the number of integers in the vector may be reduced by one. Expected magnitudes for each of the remaining integers of the vector may then be calculated recursively.

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