DATA COMPRESSION/DECOMPRESSION METHOD, PROGRAM, AND DEVICE

摘要

There is provided an electronic device including: a PHLCT circuit (15) having an input signal DCT coefficient calculation module for calculating an input signal DCT coefficient in an object block area and a block area adjacent to the object block area among a plurality of block areas, a compensation function DCT coefficient calculation module for calculating an inclination compensation function DCT coefficient for compensating the inclination at the input signal block boundary at the boundary between the object block area and the adjacent block area from the input DCT coefficient, and a residual calculation module for calculating the residual between the DCT coefficient of the input signal and the DCT coefficient of the inclination compensation function; a quantization circuit for quantizing the residual to obtain compressed data; and an entropy encoding circuit (17) for encoding the compressed data.