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:
Mar. 09, 1993
Filed:
Jul. 15, 1991
Applicant:
Inventors:
Bhajan Singh, Birmingham, GB;
Vincent Considine, Longbuckby, GB;
Assignee:
GEC - Marconi Limited, Stanmore-Middlesex, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04I / ;
U.S. Cl.
CPC ...
375120 ; 375 81 ; 332127 ;
Abstract
An all-digital phase locked loop circuit is described in which a numerically controlled oscillator is driven at a multiple of a required output frequency; a counter is provided to divide the output frequency of the oscillator by the multiple; an analogue to digital converter is provided to sample an input signal having the required frequency, and the frequency of the numerically controlled oscillator provides the sampling rate of the converter.