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:
Aug. 27, 2002
Filed:
Dec. 28, 2000
Hiroshi Aoki, Yokohama, JP;
Shiro Suzuki, Abiko, JP;
Junichi Horigome, Tokyo, JP;
Takayoshi Chiba, Machida, JP;
Shigeo Yamaguchi, Kawasaki, JP;
Other;
Abstract
An A/D converter ( ) samples an analog signal synchronously with a sampling clock from a VCO ( ). These sampled values are stored in a shift register ( ). A code judging section ( ) detects the positive/negative sign pattern (time-series code pattern) of the sampled values held in storage elements (S to S ) of the shift register ( ) and stores the sampled values in predetermined register ( to ) according to the detected sign pattern. According to this, a calculating section ( ) determines the phase difference between the analog signal and the sampling clock. The phase difference is fed to a VCO ( ) through a D/A converter ( ) and a loop filter ( ).