
基本信息:
- 专利标题: 插头类型检测
- 专利标题(英):Plug type detection
- 申请号:CN201280061798.X 申请日:2012-12-17
- 公开(公告)号:CN103988088A 公开(公告)日:2014-08-13
- 发明人: P·J·沙哈 , A·梅拉比
- 申请人: 高通股份有限公司
- 申请人地址: 美国加利福尼亚州
- 专利权人: 高通股份有限公司
- 当前专利权人: 高通股份有限公司
- 当前专利权人地址: 美国加利福尼亚州
- 代理机构: 上海专利商标事务所有限公司
- 代理人: 亓云
- 优先权: 61/576,868 2011.12.16 US; 61/576,887 2011.12.16 US
- 国际申请: PCT/US2012/070193 2012.12.17
- 国际公布: WO2013/090934 EN 2013.06.20
- 进入国家日期: 2014-06-13
- 主分类号: G01R31/04
- IPC分类号: G01R31/04 ; H04M1/725 ; H04R5/04
Techniques for detecting the type of a media plug inserted into a corresponding jack. In an exemplary embodiment, the output of a first power amplifier for driving a media plug terminal, e.g., the right headphone or left headphone, is selectively coupled to a reference voltage. Measurements of the voltage at a microphone terminal of the media plug may be alternately made for the reference voltage being at a first value and a second value. In an embodiment, the first power amplifier output voltage may be varied by opening or closing a switch. Alternatively, the first power amplifier output voltage may be directly set by an input voltage to the first power amplifier. By detecting changes in the voltages measured at the microphone terminal, it may be determined whether the media plug is of a North American type or European type.
公开/授权文献:
- CN103988088B 插头类型检测 公开/授权日:2017-03-22