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. 07, 2009
Filed:
Mar. 30, 2007
Michael Joseph Carnevale, Rochester, MN (US);
Daniel Frank Moertl, Rochester, MN (US);
Michael Joseph Carnevale, Rochester, MN (US);
Daniel Frank Moertl, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and calibration apparatus implement calibration of sampling of a data strobe signal (DQS) during synchronous dynamic random access memory (DRAM) reads. A calibration control is provided to enable calibration testing. A selected one of a received DQS signal and an internal Enable signal is driven onto a data mask (DQM) IO during a DRAM read for calibration testing. The received DQS signal and the internal Enable signal are used to adjust the Enable delay to generally center the preamble time at the DQS receiver.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile