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:
Nov. 05, 1996
Filed:
Apr. 19, 1994
Hitachi, Ltd., Tokyo, JP;
Hitachi Chubu Software, Ltd., Aichi-ken, JP;
Abstract
Bus snoop method and apparatus for use in a computer system in which a CPU with cache is coupled to a main memory control unit for controlling a main memory unit through a bus snoop control unit, wherein when the CPU with cache occupies a bus at the time that an external bus master transfers data to the main memory unit, a transfer address for transfer of the data undergoes buffering in the bus snoop control unit and after the CPU with cache ends the execution of an instruction and opens a bus right, the bus snoop control unit transfers the data transfer address subject to buffering to the CPU with cache and a corresponding address recorded in the cache is canceled.