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:
Dec. 07, 1982
Filed:
Sep. 10, 1980
Applicant:
Inventor:
Kohji Ishida, Tokyo, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04H / ;
U.S. Cl.
CPC ...
179 / ; 179 / ; 179 / ;
Abstract
An FM receiver in which the length of the signal path is significantly shortened and in which separation between right and left channels is implemented by adjusting a DC bias voltage. A pulse train signal having a frequency dependent upon the instantaneous frequency of the received FM signal is generated. Subcarrier signals in and out of phase with a pilot signal component in the pulse train signal are produced and a variable DC component is added thereto. The subcarrier signals including the DC component are multiplied to obtain pulse train signals. The pulse train signals are integrated to yield right and left stereophonic channel signals.