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. 30, 1982
Filed:
Aug. 27, 1980
Applicant:
Inventor:
Ian A Vance, Newport, GB;
Assignee:
International Standard Electric Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375 88 ; 375 80 ; 329104 ;
Abstract
A radio receiver employing paired signal paths with frequency shift keying. In each signal path pair in which demodulated signals in quadrature are produced, the outputs of the limiting amplifiers are connected to two pairs of flip-flops so that the phase changes in the amplifier outputs are indicated. The outputs of the flip-flops are selectively summed in two gates to drive the inputs of a further flip-flop the output of which is the decoded output signal.