Patent ID: 6169539
Filing Date: 2001-01-02
Classification: G09G

Abstract:
An analog video signal selection circuit for a liquid crystal display which selects one of first data of R1, G1 and B1 received from a first channel or second data of R2, G2 and B2 received from a second channel, comprising: a mode selection means for generating a first channel selection signal and a second channel selection signal in a manual mode and generating an automode selection signal in a auto mode; a data selection means for selecting one of the first data of R1, G1 and B1 received from the first channel or the second data R2, G2 and B2 received from the second channel and providing the selected data as R, G and B output signals in accordance with the first and second channel selection signals and the automode selection signal generated from the mode selection means; and a synchronous signal selection means for selecting one of a first synchronous data of horizontal and vertical synchronous signals from the first channel and a second synchronous data of horizontal and vertical synchronous signals from the second channel in accordance with the first and second channel selection signals and the automode selection signal generated from the mode selection means.