| 摘要 |
A system for compressing moving image data is described. The decompression side of the system has apparatus for forming a sequence of arrays of pixel display values (76, 78) for driving a display device (4) from a stream of compressed data, each of said arrays of pixel display values representing a frame of a moving image, said apparatus comprising: means responsive to a pixel copy code (<direction><length>1) within said stream of compressed data for copying one or more previously formed pixel display values (s1, s2, s3) to a current position (C) within said array; means responsive to a new pixel code (<15 bits>1, <11111><length>1) within said stream of compressed data for mapping one or more pixel appearance values (n1) specified by said new pixel codes to respective pixel display values; and means for writing said pixel display values derived from said new pixel code to a current position within said array. The compression side provide complementary apparatus for generating such pixel copy codes and new pixel codes from source image data. <IMAGE> |
