Patent ID: 7155472
Filing Date: 2006-12-26
Classification: G06F,G06T

Abstract:
1. A quantizer receiving an input T and a quantization step Q and forming a quantization output A in the form trunc(T/Q), the quantizer unit comprising: an absolute value unit receiving the input T and forming F the absolute value of T; an adjustment unit receiving the the quantization step Q and forming a correction factor m equal to 0 where Q=2 an adder connected to said absolute value unit and said adjustment unit and forming F′ the sum of F and m; an inverting unit receiving the quantization step Q and forming q an integer approximation of (2 a first multiplier connected to said absolute value unit and said inverting unit and forming the product of F′ and q; a shifter receiving the product of F and q from said first product unit and forming A a second multiplier receiving the input T and connected to said shifter forming A the product of the sign of T and A