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. 19, 1976
Filed:
Sep. 08, 1975
Susumu Yokoyama, Tokyo, JA;
Pioneer Electronic Corporation, Tokyo, JA;
Abstract
A radio receiver using an oscillator to generate a desired frequency at equal intervals as a local oscillator is disclosed. The radio receiver includes a time constant circuit initiated by turning on the receiver power supply. A pulse signal generator is controlled by the time constant circuit and generates a pulse after a desired time. This pulse is applied to the local oscillator to vary temporarily its oscillating frequency, thereby enabling the oscillating frequency of the local oscillator to be pulled into a frequency corresponding to a desired broadcasting station. A control voltage generator responsive to the IF amplifier and detector of the receiver operates to block the output of the pulse signal generator when it is detected that the frequency of the local oscillator has pulled into the frequency corresponding to the desired broadcasting station. A muting circuit is responsive to the pulse signal generator to prevent an output from the receiver until the frequency of the local oscillator has pulled into the frequency corresponding to the desired broadcasting station.