Patent ID: 8065354
Filing Date: 2011-11-22
Classification: H03M

Abstract:
1. A computer-implemented method of compressing a plurality of 16-bit values stored in a memory into a compressed format, comprising: transforming the plurality of 16-bit values to produce four predictor values and a plurality of error values for transmission to a quantization unit; quantizing the four predictor values based on a maximum number of bits needed to represent three of the four predictor values to produce quantized predictor values for transmission to an encoding unit; quantizing the plurality of error values based on a maximum number of bits needed to represent each one of the plurality of error values to produce quantized error values for transmission to the encoding unit; converting the quantized predictor values and the quantized error values to nonnegative quantized predictor values and nonnegative quantized error values; and encoding the nonnegative quantized predictor values and nonnegative quantized error values into the compressed format.