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. 10, 2009
Filed:
Jun. 28, 2005
Sebastian Zylowski, Zielona Gora, PL;
Sebastian Zylowski, Zielona Gora, PL;
Advanced Digital Broadcast Polska SP. Z O.O., Zielona Góra, PL;
Advanced Digital Broadcast, Ltd., Taipei, TW;
Abstract
A signal receiver () has a tuner (), which receives an RF_IN signal and outputs a desired IF_OUT intermediate frequency signal to a demodulator (). The demodulator (), on the basis of the signal level received from the tuner and the AGC characteristic set by a processor (), controls the RF_AGC and IF_AGC tuner gains. The demodulator operation may also base on the signal level read from the IF_OUT output of the IF_Amp amplifier. The demodulator () sends to the processor () a digital stream of a desired signal TS. The processor comprises an AGC characteristic controller () for calculating the AGC characteristic of the tuner on the basis of a level of the desired signal and a strongest level of close signals, which are detected within the passband of the input filter () of the tuner () for the desired signal.