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:
Oct. 14, 1980
Filed:
Oct. 16, 1978
Applicant:
Inventors:
Akira Misawa, Tokyo, JP;
Tatsuo Numata, Tokyo, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H03J / ;
U.S. Cl.
CPC ...
455174 ; 455175 ; 455183 ; 455185 ; 455194 ;
Abstract
A digital tuning FM stereophonic receiver of the type including a phase locked loop synthesizer. A digital code generating circuit is provided for generating a digital code which consists of several bits to be applied to a programmable frequency divider inserted in the phase locked loop. At least one auxiliary bit is provided together with the bits of the digital code. The information of the auxiliary bit is used to input and hold the digital code to be applied thereto. Muting operation of the FM stereophonic receiver is controlled in accordance with the information of the auxiliary bit.