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:
Jan. 24, 2012
Filed:
Jun. 20, 2008
Tatsushi Sano, Kanagawa, JP;
Tatsushi Sano, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A phase-locked loop circuit that generates a clock signal synchronized with an input signal with a predetermined frequency, including an oscillator configured to oscillate and generate the clock signal; a converter configured to convert the input signal into a digital signal using the clock signal generated by the oscillator as a sampling clock; a frequency divider configured to divide a frequency of the clock signal generated by the oscillator to generate a comparison clock signal and send the comparison clock signal as a feedback; a normalizer configured to normalize an amplitude value of the digital signal generated by the converter; and an oscillation controller configured to control a phase of the clock signal generated by the oscillator so as to reduce a phase difference between the normalized digital signal generated by the normalizer and the comparison clock signal sent as a feedback by the frequency divider.