Two-dimensional discrete cosine transform device and two-dimensional inverse discrete cosine transform device

摘要

A two-dimensional DCT system having a first calculation circuit, a rearrangement circuit, a second calculation circuit and a multiplier, and a two-dimensional IDCT system having a multiplier, a first calculation circuit, a rearrangement circuit, and a second calculation circuit. Each of these elements is adapted to receive data in a serial form, process the received data in its serial form, and output data in a serial form. As a result, serial-to-parallel converters and parallel-to-serial converters which may have a relatively large number of registers or hold circuits are not needed.