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. 30, 1983
Filed:
Oct. 08, 1980
Nippon Telegraph & Telephone Public Corp., Tokyo, JP;
Takeda Riken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A semiconductor memory test pattern generating apparatus in which an instruction memory is read out, assigning an address by a program counter, and instructions thus read out are decoded and executed to generate a test pattern. A start address and a stop address and index data indicating the number of times of executing an area defined by the start and stop addresses are stored in a loop memory. During the operation of the program counter the start and stop addresses and the index data are read out from the loop memory and loaded in a register group. When the program counter coincides with the loaded stop address, the setting of the program counter to the loaded start address is executed by the number of times indicated by the loaded index data, and in the last execution the next address of the loop memory is read out.