Data processing system,and data processing method

• Main Authors: HASHIMOTO KOUKICHI, OHASHI MASAHIRO
• Format: Patent
• Language: English
• Published: 04.09.2003
• Edition: 7
• Subjects: CALCULATING; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION ANDCOMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION ANDCOMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWNENERGY USE; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

According to a data processing apparatus and a data processing method of the present invention, supply of clocks is controlled according to various kinds of processing commands which are issued from a command issuing source and, when a first buffer memory underflows, a data transfer request is made without terminating a data processing command, and data processing is resumed at the completion of a data transfer command. Therefore, supply of clocks can be stopped when data are not transferred and when data are not processed, whereby power consumption can be reduced. Further, when the first buffer memory underflows, it is not necessary for the command issuing source to issue a data processing command again, whereby the number of commands to be issued can be reduced.