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:
Apr. 27, 2004
Filed:
Dec. 02, 2002
Shigemi Yoshioka, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
An object is to provide a serial access memory and a data write/read method applicable thereto and capable of reducing the test time of the serial access memory. After transferring the data stored in the memory cells MC to MCm connected with a word line WL to the read registers Rreg- to Rreg-m all at once, the data stored in the memory cells MC to MCm connected with a word line WL is transferred to the write registers Wreg- to Wreg-m all at once. The data stored in the read register is transmitted to an output means through read data buses RD, /RD. The data stored in the write register is transmitted to the output means through write data buses WD, /WD, an input/output means , and the second read data buses RD , /RD . The output means compares the data transmitted from the read data buses RD, /RD with the data transmitted from second data buses RD , /RD