Patent ID: 7254735

Claim:
A data processing system for processing data via a plurality of processing blocks, comprising: a plurality of block control circuits provided corresponding to said respective processing blocks, said block control circuits controlling corresponding processing blocks by a clock synchronization respectively and transferring a handshaking control signal with other block control circuits, thereby controlling a data transfer between said processing blocks by self-synchronization type handshaking, wherein each said processing block has a plurality of subblocks and said data are processed via said plurality of subblocks, at least one of said plurality of subblocks outputs a complete signal indicating that a data processing is completed, and each of said plurality of block control circuits has: an end detecting section for detecting an end of a data processing in a corresponding one of said processing blocks upon receipt of said complete signal output from said at least one of said plurality of subblocks; and a transfer control section for receiving a detection result signal output from said end detecting section to control supply and stop of a clock for a corresponding one of said processing blocks in response to a stop signal created based on said detection result signal and for transferring said handshaking control signal to control a data transfer between said plurality of processing blocks by self-synchronization type handshaking.