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:
Jul. 23, 2002
Filed:
Aug. 13, 1999
Takahiro Yasui, Tokyo, JP;
Advantest Corporation, Tokyo, JP;
Abstract
There is provided a memory testing apparatus provided with a failure relief analyzer, which need not initialize, prior to counting the number of failure data, failure storing memories for storing therein counted values of the number of failure data. An output altering circuit is constituted by an initialization controller for outputting an initialization signal on the basis of a row failure counter address signal outputted from an RFC address formatter and a column failure counter address signal outputted from a CFC address formatter , and data controllers and to each of which an initialization signal outputted from the initialization controller is applied. By use of the output altering circuit, respective values of data read out from each address of a row failure storing memory, each address of a column failure storing memory and each address of a total failure storing memory are outputted as “0” only when they are read out at the first time.