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:
Jan. 10, 1995
Filed:
Aug. 24, 1993
Timothy M Lacey, Cupertino, CA (US);
Christopher S Norris, Sunnyvale, CA (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A memory is described that includes a main memory array having a plurality of main memory locations and a redundant memory array having a plurality of redundant memory locations. A main decoding circuit is coupled to the main memory array for decoding an address received from an external circuit to access a selected one of the plurality of main memory locations. A storage circuit is provided for pre-storing the address of the selected one of the plurality of main memory locations when the selected one of the plurality of main memory locations is defective. A redundant comparison circuit is coupled to the redundant memory array and the storage circuit for comparing the external address with the address stored in the storage circuit in order to access a selected one of the plurality of redundant memory locations. A static decoding circuit is coupled to the storage circuit and the main select circuit for decoding the address received from the storage circuit and for disabling the main select circuit from accessing the selected one of the plurality of main memory locations such that when the redundant comparison circuit accesses the selected one of the plurality of redundant memory locations, the main select circuit has already been disabled from accessing the selected one of the plurality of main memory locations.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile