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:
Nov. 24, 2009
Filed:
Oct. 29, 2002
Applicant:
Toru Shibusawa, Osaka, JP;
Inventor:
Toru Shibusawa, Osaka, JP;
Assignee:
Sanyo Electric Co., Ltd., Moriguchi-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/20 (2006.01); H04N 7/18 (2006.01); H04N 7/173 (2006.01);
U.S. Cl.
CPC ...
Abstract
Information indicating which of channels is selected in a digital broadcasting receiveris fed from a control signal transmitterto a retransmitter. A terrestrial wave digital broadcasting wave from a transmitting station is inputted to a channel selection filterthrough an indoor receiving antennaand an automatic gain controllerin the retransmitter, and only a signal having a frequency component corresponding to the channel selected by the digital broadcasting receiveris extracted, and is transmitted toward the digital broadcasting receiverby a retransmission indoor antennathrough a variable gain amplifier