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. 06, 2002
Filed:
Dec. 13, 2000
Tae-Yun Kim, Kyoungki-do, KR;
Hyundai Electronics Industries Co., LTD, Ichon-Shi, KR;
Abstract
A redundancy circuitry is used in a memory device for repairing defects in a packaged memory having registers by using antifuse. The redundancy circuitry includes: an anticell for storing data to be replaced; a temporary anticell for storing the data temporarily; a row and a column antifuse composed of antifuse and anti enable fuse corresponding to a row and column address, respectively; an antifuse controller for controlling the programming of the antifuse; a voltage supplier for supplying a voltage to program the antifuse; a row and a column comparators for comparing the programmed row and column antifuses and the external input address, respectively; an anti-controller for controlling to provide data from the anticell on a read operation and to temporarily store the external data to the temporary anticell on a write operation based on the comparison signals; a restore controller for, based on the row address on a restore operation, transferring the external data identical to the programmed fuse address to the anticell; and a channel selection memory for storing the channel address for pre-fetch and restore operations provided during read and write operations.