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. 24, 1984
Filed:
Aug. 09, 1982
Applicant:
Inventor:
William C Hughes, Scotia, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H04L / ; H03D / ;
U.S. Cl.
CPC ...
375 97 ; 375 83 ; 375119 ; 329124 ;
Abstract
A receiver for recovering digital data from a phase-shift modulated carrier in a data communications system, wherein the length of the message preamble is insufficient to permit synchronous detection, divides the received signal into two channels. The channels having the larger and smaller signals are selected as the data and the servo channel, respectively. The output of the servo channel is utilized to control the local oscillator frequency in order to provide for synchronous detection during at least a part of the message data.