Patent ID: 8345746

Claim:
A quantization system comprising: a receiver configured to receive a first compressed bit stream having a first quantization level and a first motion vector, wherein the first motion vector is extracted from the first compressed bit stream; an inverse quantizer configured to perform an inverse quantization of the first compressed bit stream at the first quantization level to generate a first set of coefficients; an inverse transformer configured to apply an inverse transform to the first set of coefficients to generate a frame of pixel data; a motion compensator configured to apply motion compensation using the frame of pixel data to generate motion compensated pixel data using a prior frame of pixel data stored in a frame buffer receiving the first motion vector extracted from the first compressed bit stream; a transformer configured to generate a second set of coefficients based on the motion compensated pixel data; and a quantizer configured to quantize the second set of coefficients from the motion compensated pixel data at a second quantization level to generate a second compressed bit stream having the second quantization level, wherein the first motion vector is inserted back into the second compressed bit stream without calculations performed on the first motion vector.