发明授权
US08626932B2 Device-dependent selection between modes for asymmetric serial protocols
有权
非对称串行协议模式之间的设备相关选择
- 专利标题： Device-dependent selection between modes for asymmetric serial protocols
- 专利标题（中）： 非对称串行协议模式之间的设备相关选择
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申请号： US12551824申请日： 2009-09-01
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公开(公告)号： US08626932B2公开(公告)日： 2014-01-07
- 发明人: Gregory Lydon , Lawrence G. Bolton , Anand Dalal
- 申请人： Gregory Lydon , Lawrence G. Bolton , Anand Dalal
- 申请人地址： US CA Cupertino
- 专利权人： Apple Inc.
- 当前专利权人： Apple Inc.
- 当前专利权人地址： US CA Cupertino
- 代理机构： Kilpatrick Townsend & Stockton LLP
- 主分类号： G06F15/16
- IPC分类号： G06F15/16
摘要：
A portable communication device (PCD) can automatically switch into different operating modes of an asymmetric communication protocol (such as USB) depending on the type of accessory connected. For example, the accessory can signal whether the PCD should operate in a first mode or a second mode using a hardware indicator such as identification resistor across two pins of a multi-pin connector and/or a software indicator such as a command protocol. The PCD can detect the accessory's signal and switch to the operating mode requested by the accessory.