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:
Jun. 29, 2010
Filed:
Nov. 20, 2007
Hideo Inaba, Tokyo, JP;
Hideo Inaba, Tokyo, JP;
Elpidia Memory, Inc., Tokyo, JP;
Abstract
High-speed operation is achieved without increase in a circuit current and unstable operation of data strobe signal level due to collision between data strobe signals. Each of RAMsandoutputs a data signal DQ and a data strobe signal DQS indicative of an output timing of the data signal. RAMincludes a strobe signal control unitthat determines whether RAMconnected in parallel with the RAMis in a read state or not, and delays an output start timing of data strobe signal DQS when the RAMis in the read state. Strobe signal control unitof the RAMcontrols output start timing so that a latter half portion of a preamble period of the data strobe signal DQS to be output coincides with a postamble period of the data strobe signal DQS output by the RAM