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. 17, 1999
Filed:
Mar. 06, 1998
Applicant:
Inventor:
Tetsuji Nakazawa, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L / ; H03L / ;
U.S. Cl.
CPC ...
331 11 ; 331 14 ; 331 17 ; 331 25 ; 360 51 ;
Abstract
A phase locked loop circuit for absorbing characteristic variations of phase comparator components beforehand in adjusting mode. With the variations thus adjusted and co-opted, any intrinsic error of the phase comparator is prevented from appearing as a phase difference upon transition from adjusting mode to normal operation mode. The scheme inhibits lock range deviations or capture range variations in normal operation mode, permitting a stable phase locked loop function.