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:
Mar. 21, 2006
Filed:
Oct. 13, 2000
Chak Cheung Edward Ho, Markham, CA;
Oleg Drapkin, Richmond Hill, CA;
Carl Mizuyabu, Thornhill, CA;
Ray Chau, Toronto, CA;
Gordon Caruk, Bramalea, CA;
Chak Cheung Edward Ho, Markham, CA;
Oleg Drapkin, Richmond Hill, CA;
Carl Mizuyabu, Thornhill, CA;
Ray Chau, Toronto, CA;
Gordon Caruk, Bramalea, CA;
ATI International SRL, Christchurch, BB;
Abstract
A signal phase shifting circuit shifts the phase of an input signal, such as a STROBE signal, based on a reference signal, such as a CLOCK signal, to facilitate, for example, receiving of double data rate data. The signal phase shifting circuit includes a reference signal period dividing circuit having a feedback delay matching array operatively coupled to one of a plurality of voltage control delay lines. This signal phase shifting circuit also includes a variable delay circuit that provides a phase shifted output signal, such as a phase shifted STROBE signal, that includes a delay stage in a phase shifted output signal drive buffer coupled to the delay stage, such as a voltage control delay line. The feedback delay matching array includes a plurality of serially coupled buffer stages operatively coupled to compensate for delay variations associated with the phase shifted output signal drive buffer in the variable delay circuit.