System and methods for efficient quantization

Details System and methods for efficient quantization System and methods for efficient quantization

H - Electricity

04

N

H04N 7/30 (2006.01) H04N 7/26 (2006.01) H04N 7/34 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2467670

A method in a signal processor for quantizing a digital signal is provided. A fixed-point approximation of a value X÷Q is generated, wherein X is a fixed-point value based on one or more samples in the digital signal, and wherein Q is a fixed-point quantization parameter. A correction is generated, and the approximation is modified with the correction.

La présente invention concerne un procédé de quantification d'un signal numérique dans un processeur de signaux. Selon l'invention, une approximation à virgule fixe d'une valeur X ÷ Q est générée, dans laquelle X représente une valeur à virgule fixe fondée sur un ou plusieurs échantillons dans le signal numérique, et dans laquelle Q représente un paramètre de quantification à virgule fixe. Selon l'invention, une correction est générée et l'approximation est modifiée à l'aide de la correction.

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