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:
Dec. 22, 2009
Filed:
Feb. 20, 2007
Ichiro Kumata, Kanagawa, JP;
Ichiro Kumata, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A digital DLL circuit includes: a first register configured to hold a first delay specifying value to specify a delay of a rising edge side of a signal; a second register configured to hold a second delay specifying value to specify a delay of a falling edge side of a signal; and a digitally-controlled variable delay circuit configured to be allowed to individually control delays of a rise side and a fall side of a signal. The digital DLL circuit further includes a control circuit configured to implement control so that a rise-side delay and a fall-side delay by the variable delay circuit are kept at the first delay specifying value of the first register and the second delay specifying value of the second register, respectively.