Invention Grant
US08284087B2 System and method for detecting accessory connection and accessory class
有权
用于检测附件连接和附件类的系统和方法
- Patent Title: System and method for detecting accessory connection and accessory class
- Patent Title (中): 用于检测附件连接和附件类的系统和方法
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Application No.: US12270384Application Date: 2008-11-13
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Publication No.: US08284087B2Publication Date: 2012-10-09
- Inventor: Jatin Naik , David Glen , Paul Edelshteyn , Vadim Bishtein , Charles Leung
- Applicant: Jatin Naik , David Glen , Paul Edelshteyn , Vadim Bishtein , Charles Leung
- Applicant Address: CA Markham, ON
- Assignee: ATI Technologies ULC
- Current Assignee: ATI Technologies ULC
- Current Assignee Address: CA Markham, ON
- Main IPC: H03M1/66
- IPC: H03M1/66
Abstract:
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.
Public/Granted literature
- US20090225062A1 SYSTEM AND METHOD FOR DETECTING ACCESSORY CONNECTION AND ACCESSORY CLASS Public/Granted day:2009-09-10
Information query
