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. 19, 1997
Filed:
Aug. 31, 1994
Mitsuru Sugita, Hyogo-ken, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A multiport memory includes a first memory block and a second memory block which are independently accessible with each other. Each of the first and second memory blocks can be accessed simultaneously through first and second ports. The memory includes a first access conflict detector for detecting an access conflict on the first memory block, a second access conflict detector for detecting an access conflict in the second memory block, a first arbitor responsive to the first detector for arbitrating an access conflict in the first memory block, and a second arbitor responsive to the second detector for arbitrating an access conflict in the second memory block. The memory further includes a selector for transferring the arbitration result of the first arbitor to the second memory block while neglecting the arbitration result of the second arbitor only when both the first and second detector detect the access confliction.