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:
Mar. 19, 2013
Filed:
May. 13, 2009
Katsuya Mizumoto, Tokyo, JP;
Katsuya Mizumoto, Tokyo, JP;
Renesas Electronics Corporation, Kanagawa, JP;
Abstract
The present invention provides a data processing apparatus realizing reduced load on a host CPU and improved performance. An arithmetic unit includes an SIMD processor for processing a plurality of pieces of data by a single instruction, and a second CPU coupled to the SIMD processor via an arithmetic unit bus and controlling the SIMD processor. A host system includes a host CPU for controlling the entire data processing apparatus, a built-in memory and a peripheral circuit coupled to the host CPU via a first bus, and a peripheral circuit coupled to a second bus. The second CPU accesses an external flash/ROM via the arithmetic unit bus and the first bus, and the SIMD processor accesses an external memory via the second bus. Therefore, the load on the host CPU can be reduced, and the performance of the entire apparatus can be improved.