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:
May. 13, 1997
Filed:
Jan. 27, 1993
Applicant:
Inventors:
Naoji Okumura, Mino, JP;
Masaaki Fujita, Takatsuki, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L / ; H03L / ; H03L / ;
U.S. Cl.
CPC ...
375376 ; 331 17 ; 331 16 ; 331 25 ; 375327 ;
Abstract
A phase locked loop circuit comprises a divider which is changed in a dividing ratio in compliance with a control signal applied thereto, the output of the divider is phase-compared with an input signal of the phase locked loop circuit. A phase-compared output is applied to a low pass filter to obtain a direct current component, and an oscillator is controlled by the direct current component.