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:
Feb. 22, 1977
Filed:
Mar. 31, 1975
Applicant:
Inventors:
Tadashi Kumagai, Soma, JA;
Shoji Ogasawara, Tokyo, JA;
Assignee:
Alps Electric Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
325430 ; 178D / ; 325461 ;
Abstract
A VHF mixer serves as an amplifier-mixer for VHF and an IF amplifier for UHF and CATV. UHF and CATV tuners produce the UHF and CATV IF signals respectively. A band selector switch enables a VHF local oscillator and disables UHF and CATV local oscillators to receive VHF, enables the UHF local oscillator and disables the VHF and CATV local oscillators to receive UHF and enables the CATV local oscillator and disables the VHF and UHF local oscillators to receive CATV.