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:
Feb. 10, 2009
Filed:
Jun. 22, 2005
Takao Matsui, Kawasaki, JP;
Yuka Hosokawa, Kawasaki, JP;
Makoto Hataida, Kawasaki, JP;
Toshikazu Ueki, Kawasaki, JP;
Seishi Okada, Kawasaki, JP;
Takao Matsui, Kawasaki, JP;
Yuka Hosokawa, Kawasaki, JP;
Makoto Hataida, Kawasaki, JP;
Toshikazu Ueki, Kawasaki, JP;
Seishi Okada, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In the present invention, in order that a busy judgment of a register can be made without fail and without increasing the number of hardware resources for storing a request into the register provided at the final stage of a pipeline register in a stage in which the request is retained halfway in the pipeline register in a pipeline processor, a first counter for counting the number of valid requests in the registers between a judgment section interposed in the pipeline register and for judging whether the request is a valid request and a request queue and a busy judgment section for judging whether the request queue is in a busy state based on the number of valid requests counted by the first counter are provided and a judgment is made by the judgment section based on the result of the busy state judgment by the busy judgment section.