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:
Aug. 28, 1980
Abram van de Grijp, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A RF signal converter circuit for connection to the aerial input of an RF superheterodyne receiver. In order to avoid a separate remote control of the converter circuit use is made of the local oscillator radiation which is present at the aerial input of a RF-superheterodyne receiver as an indication of the tuning frequency selected by the user with tuning portion of the said RF superheterodyne receiver. The converter circuit comprises a frequency search circuit in which the frequency of the oscillator radiation is detected, an RF signal selector which is controlled by the frequency search circuit and by means of which the desired RF signal is selected from the RF signals applied to the converter circuit, furthermore comprising a modulator which is also controlled by the frequency search circuit and in which the selected RF signal is modulated on a carrier frequency which is determined by the tuning frequency and the intermediate frequency of the RF superheterodyne receiver.