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. 30, 2007
Filed:
Oct. 19, 2001
Applicant:
Syuuji Matsuura, Ikoma, JP;
Inventor:
Syuuji Matsuura, Ikoma, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An IF signal output from an IF amplifying circuit included in a tuner is converted to have a band width for transmission by an SAW filter and has unnecessary signals removed therefrom. Thereafter, the resulting signal has its gain made constant by an IFAGC circuit, amplified by an IF amplifying circuit, unnecessary band components are removed by a lowpass filter, and balanced IF signals are output from unbalance/balance converting circuit and provided to a QAM demodulating circuit.