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:
Jul. 04, 1989
Filed:
Mar. 23, 1988
Applicant:
Inventor:
Detlef W Oldach, Hamburg, DE;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03D / ; H03K / ;
U.S. Cl.
CPC ...
328133 ; 328134 ; 328109 ; 307511 ; 307262 ;
Abstract
The invention relates to a phase comparison circuit for determining the phase deviation between an input signal and a reference signal. The input signal is integrated during two consecutive defined integration intervals which are derived from the reference signal. The integral values assigned to the integration intervals are weighted and the difference is formed. The output signal of the phase comparison circuit is derived from the result of forming this difference.