公开(公告)号：US20150009197A1

公开(公告)日：2015-01-08

申请号：US14150214

申请日：2014-01-08

Applicant: FARADAY TECHNOLOGY CORPORATION

Inventor： Feng Xu ,  Min-Yuan Wu ,  Chia-Ta Lai ,  Xing-Bo Ding

IPC: G09G5/00

CPC classification number: G09G5/006 ,  G09G5/36 ,  G09G2330/021

Abstract: A video output system at least includes a first video output terminal, a control circuit, a first digital-to-analog converter, and a first bias voltage generator. The first video output terminal is selectively connected with a first video input terminal of a display device through a signal cable. According to a constant detecting current generated by the first digital-to-analog converter, or the first bias voltage generator, the first video output terminal has a detecting voltage for indicating whether the video output system is connected with the display device. When the video output system is connected with the display device, the control circuit enables the first digital-to-analog converter but disables the first bias voltage generator. When the video output system is not connected with the display device, the control circuit disables the first digital-to-analog converter but enables the first bias voltage generator.

Abstract translation: 视频输出系统至少包括第一视频输出端子，控制电路，第一数模转换器和第一偏置电压发生器。 第一视频输出端子通过信号电缆与显示装置的第一视频输入端选择性地连接。 根据由第一数模转换器或第一偏置电压发生器产生的恒定检测电流，第一视频输出端子具有用于指示视频输出系统是否与显示装置连接的检测电压。 当视频输出系统与显示装置连接时，控制电路使第一个数模转换器能够使第一偏置电压发生器失效。 当视频输出系统未与显示设备连接时，控制电路禁用第一个数模转换器，但使能第一偏置电压发生器。