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:
Jun. 03, 1980
Filed:
Jul. 27, 1978
Applicant:
Inventor:
Shinobu Tsurumaru, Yokohama, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ; H04N / ;
U.S. Cl.
CPC ...
455307 ; 358167 ; 455311 ;
Abstract
A tuner for use with a television receiver includes a mixer receiving and mixing radio frequency and local oscillator signals and a low-pass peaking circuit for preferentially coupling the intermediate frequency from the mixer to an intermediate frequency amplifier. A capacitor in parallel with a series combination of an inductor and a capacitor in the peaking circuit forms a trap circuit for blocking spurious high-frequency signals from the intermediate frequency amplifier. An emitter follower between the mixer and the intermediate frequency amplifier may be included within the parallel connection.