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. 17, 2007
Filed:
Jan. 24, 2003
Wai Cheong Chan, Sunnyvale, CA (US);
James Thomas Doyle, Nederland, CO (US);
Pavel Poplevine, Foster City, CA (US);
Murali Krishna Varadarajula, Campbell, CA (US);
Hsing-chien Roy Liu, Cupertino, CA (US);
Gordon Mortensen, San Jose, CA (US);
Wai Cheong Chan, Sunnyvale, CA (US);
James Thomas Doyle, Nederland, CO (US);
Pavel Poplevine, Foster City, CA (US);
Murali Krishna Varadarajula, Campbell, CA (US);
Hsing-Chien Roy Liu, Cupertino, CA (US);
Gordon Mortensen, San Jose, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
The supply voltage of a memory system is adjusted in response to changes in the frequency of the clock signal. The memory system measures a time from when data becomes valid on the output of a memory to the next clock edge to determine a timing value. When the clock frequency changes from a first frequency to a second frequency, the timing value changes from a first value to a second value. The magnitude of the supply voltage is changed to return the timing value to the first value.