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. 24, 1984
Filed:
Nov. 12, 1981
Fumio Baba, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An integrated semiconductor circuit device is provided with a special purpose readable indicator without providing additional pins. The indicator may be utilized to store information pertinent to the operativeness of the integrated circuit. The results of quality control monitoring may be written into the store to serve as a flag. A specific application is in semiconductor memory arrays having redundancy memory capability to automatically replace defective memory cells in the primary array. To enable one to know whether or not the redundancy memory array is being used, this information is written into a quality control storage cell. This cell may be a ROM system which may be accessed during a check mode.