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:
Sep. 01, 1998
Filed:
Dec. 05, 1996
Susumu Senshu, Shinagawa-ku, Tokyo, JP;
Other;
Abstract
The present invention provides a reproduction clock phase correction circuit, which can detect and set a phase exceeding one clock (one pit), in which a resolution and a detection range are never changed even if a clock frequency is changed. The reproduction clock phase correction circuit is provided with a voltage control oscillator in which delay element in a plurality of stages are connected in a form of a ring, a clock selecting means for selectively extracting an output clock of the delay element at any stage in the voltage control oscillator as a reproduction clock, a sampling means for sampling, on the basis of the reproduction clock, a reproduction signal of a reference clock reproduced from a record medium, and a selection controlling means for detecting phase information of the reproduction clock for the reference clock on the basis of a sampling value by mean of the sampling means to thereby control the clock selecting means on the basis of the phase information.