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:
Apr. 26, 1977
Filed:
Sep. 16, 1975
Applicant:
Inventor:
Michael James Underhill, Crawley, EN;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
328133 ; 307232 ; 307216 ;
Abstract
A phase comparator indicating a phase difference range of n .times. 360.degree., between two input signals, comprising edge triggered shift registers, for dividing the input signals by n, means for modulating the width of the resulting output pulses in proportion to the phase difference of the input signals, and integrating means to combine the modulated pulses into a time-averaged signal which is indicative of the phase difference.