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:
Jan. 11, 2000
Filed:
Sep. 17, 1997
Mitsumo Kawano, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In an automatic gain control loop circuit supplied with two channel signals alternately input thereto, a first capacitor filter and stores the first signal output from the level detector circuit, and a second capacitor filters and stores the second signal output from the level detector circuit. The second signal is output only during the signal period of a second channel included in the two channels. An adder adds the second signal stored in the second capacitor to the first signal stored in the first capacitor. A switch selects the first signal stored in the first capacitor during the signal period of the first channel, and selects an output from the adder during the signal period of the second channel. The selected signal is fed back to the gain control input terminal of the variable-gain amplifier circuit. With there features, a flicker is prevented from occurring when the two channel signals are switched.