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:
Aug. 03, 1999
Filed:
Aug. 26, 1997
Applicant:
Inventor:
Motoaki Ando, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
713324 ; 713322 ; 713400 ; 711141 ;
Abstract
When a CPU enters the sleep mode, an L2 cache with the ZZ terminal is also switched to the sleep mode simultaneously. When the CPU returns from the sleep mode, the L2 cache is simultaneously switched from the sleep mode to the normal operation mode. Since the normal operation of the cache is not ensured for a fixed period of time from when it leaves the sleep mode, the cache is placed in the disabled state in which its use is prohibited before being switched to the sleep mode and returned to the enabled state in which its use is allowed after a lapse of a fixed period of time from when it leaves the sleep mode.