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:
May. 23, 2006
Filed:
Jun. 26, 2003
Yukari Takata, Tokyo, JP;
Yukari Takata, Tokyo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
An arbitration circuit and a data processing system which ensure fair bus access are provided. An arbitration circuit () has a priority check block () and a round robin block (). The priority check block () checks pieces of priority information provided from processors, specifies a processor that is presenting priority information with the highest priority, i.e. a processor with the highest priority level, and outputs the result of the check (CHK) to the round robin block (). The round robin block (), holding the results of the previous arbitration process, generates and outputs a processor selecting signal (SE) on the basis of the priority check result (CHK) and a round robin order generated from the previous results.