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:
Sep. 04, 2007
Filed:
Nov. 21, 2003
Naoyuki Kamei, Yamatokoriyama, JP;
Sohichi Yoshimura, Nara, JP;
Michiaki Nishimura, Yoshino-gun, JP;
Yoshio Mizuyama, Nara, JP;
Hiroki Kinoshita, Yamatokoriyama, JP;
Takahiro Minami, Yamatokoriyama, JP;
Naoyuki Kamei, Yamatokoriyama, JP;
Sohichi Yoshimura, Nara, JP;
Michiaki Nishimura, Yoshino-gun, JP;
Yoshio Mizuyama, Nara, JP;
Hiroki Kinoshita, Yamatokoriyama, JP;
Takahiro Minami, Yamatokoriyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A CPU includes a bus interface, a control unit, an instruction cache, a data cache, a secondary cache, an instruction decoder, an arithmetic unit, and registers. When operations can be performed only with the cache, the CPU inhibits access to external memory and stops power supply to the external memory. With this arrangement, by performing operations in the CPU without using the external memory, it is possible to realize a speedy processing and to stop power supply to the external memory, thus allowing for reduction in power consumption.