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. 07, 2008
Filed:
Sep. 24, 2002
Jens Wildhagen, Weinstadt, DE;
Carsten Merkle, Welzheim, DE;
Dietmar Schill, Winnenden, DE;
Rolf Nöthlings, Stuttgart, DE;
Taiwa Okanobu, Tokyo, JP;
Jens Wildhagen, Weinstadt, DE;
Carsten Merkle, Welzheim, DE;
Dietmar Schill, Winnenden, DE;
Rolf Nöthlings, Stuttgart, DE;
Taiwa Okanobu, Tokyo, JP;
Sony Deutschland GmbH, Cologne, DE;
Abstract
In an automatic gain control unit, the gain of a voltage-controlled amplifier (VCA) () is regulated with a closed-loop control circuit. The time constant of the control circuit is varied dependent on the magnitude () of the VCA output signal. As long as the magnitude () of the VCA output signal is small, the gain is slowly adjusted. In case the magnitude () of the VCA becomes so large that saturation of the analog-digital converter () might occur, the time constant of the control circuit is decreased, in order to allow for a quick adjustment of the amplifier's gain.