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:
Jul. 08, 2008
Filed:
Jun. 25, 2002
Kenji Komori, Kanagawa, JP;
Masataka Wakamatsu, Kanagawa, JP;
Hideaki Sato, Saitama, JP;
Takashi Usui, Tokyo, JP;
Kazuyuki Saijo, Tokyo, JP;
Shinichi Tanabe, Kanagawa, JP;
Hideo Morohashi, Kanagawa, JP;
Kazuhiro Fujimura, Kanagawa, JP;
Kenji Komori, Kanagawa, JP;
Masataka Wakamatsu, Kanagawa, JP;
Hideaki Sato, Saitama, JP;
Takashi Usui, Tokyo, JP;
Kazuyuki Saijo, Tokyo, JP;
Shinichi Tanabe, Kanagawa, JP;
Hideo Morohashi, Kanagawa, JP;
Kazuhiro Fujimura, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An automatic gain control circuit able to perform high speed and correct level acquisition, able to prevent occurrence of error, and able to prevent a crash of the system. An amplification gain controller outputs a gain control signal to an automatic gain control amplifier to amplify the received signal with maximum value when receiving a burst detection trigger signal. A second gain control signal based on the detected reception signal power is calculated when receiving a first burst synchronization detection signal; and this second gain control signal is output to the automatic gain control amplifier. A received digital signal is amplified with the second gain and integrated to find the reception signal power, from which a third gain control signal is calculated and outputted to the automatic gain control amplifier to amplify the received signal with this third gain.