The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2011
Filed:
Sep. 24, 2008
Hirotaka Hara, Koganei, JP;
Hiroyuki Hamasaki, Kodaira, JP;
Mitsuhiro Saeki, Kodaira, JP;
Kazuhiro Hirade, Kokubunji, JP;
Makoto Takano, Sayama, JP;
Hirotaka Hara, Koganei, JP;
Hiroyuki Hamasaki, Kodaira, JP;
Mitsuhiro Saeki, Kodaira, JP;
Kazuhiro Hirade, Kokubunji, JP;
Makoto Takano, Sayama, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
An object of the present invention is to improve efficiency of transfer of control information, graphic data, and the like for drawing and display control in a graphic data processor. A graphic data processor includes: a CPU; a first bus coupled to the CPU; a DMAC for controlling a data transfer using the first bus; a bus bridge circuit for transmitting/receiving data to/from the first bus; a three-dimensional graphics module for receiving a command from the CPU via the first bus and performing a three-dimensional graphic process; a second bus coupled to the bus bridge circuit and a plurality of first circuit modules; a third bus coupled to the bus bridge circuit and second circuit modules; and a memory interface circuit coupled to the first and second buses and the three-dimensional graphic module and connectable to an external memory, wherein the bus bridge circuit can control a direct memory access transfer between an external circuit and the second bus.