发明名称 SYSTEM AND METHOD FOR DETECTING ACCESSORY CONNECTION AND ACCESSORY CLASS
摘要 A method comprises disabling a video digital-to-analog converter (DAC) that is configured to provide an output current representative of a video signal to an output node of an accessory connector in an enabled state. The accessory connector is coupleable to an accessory device. The method further comprises determining, while the video DAC is disabled, whether the accessory connector is coupled to the accessory device based on a voltage at the output node while the output node is connected to the first voltage reference via a resistor having a resistance.
申请公布号 US2009225062(A1) 申请公布日期 2009.09.10
申请号 US20080270384 申请日期 2008.11.13
申请人 ATI TECHNOLOGIES ULC 发明人 NAIK JATIN;GLEN DAVID;EDELSHTEYN PAUL;BISHTEIN VADIM;LEUNG CHARLES
分类号 G06F3/038 主分类号 G06F3/038
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