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. 23, 1999
Filed:
Aug. 28, 1995
Taizou Tsujimoto, Osaka, JP;
Shinji Ozaki, Osaka, JP;
Akihiko Ohtani, Osaka, JP;
Toshio Sugimura, Osaka, JP;
Matsushita Electronics Corporation, Osaka, JP;
Abstract
An instruction address that is referred to by a microprocessor unit is inputted over an instruction address bus and is stored. While counting the number of times a clock is fed to the microprocessor unit, a comparison is made between the stored instruction address and an instruction address that the microprocessor provides onto the instruction address bus. A clock count value, obtained at the time when the aforesaid instruction addresses agree, is stored. If a stored instruction address and an instruction address on the instruction address bus agree for every stored clock count value, then the microprocessor is judged to repeatedly execute a sequence of instructions and the loop count value is incremented by one. When the loop count value exceeds a predetermined value, the microprocessor is judged to be placed in an idle state and the clock frequency is lowered.