发明授权
US07613936B2 Dual-mode detection of powered device in power over ethernet system
有权
通过以太网系统供电的有源设备的双模式检测
- 专利标题： Dual-mode detection of powered device in power over ethernet system
- 专利标题（中）： 通过以太网系统供电的有源设备的双模式检测
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申请号： US11252624申请日： 2005-10-19
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公开(公告)号： US07613936B2公开(公告)日： 2009-11-03
- 发明人: John Arthur Stineman, Jr. , Jeffrey Lynn Heath
- 申请人： John Arthur Stineman, Jr. , Jeffrey Lynn Heath
- 申请人地址： US CA Milpitas
- 专利权人： Linear Technology Corporation
- 当前专利权人： Linear Technology Corporation
- 当前专利权人地址： US CA Milpitas
- 代理机构： McDermott Will & Emery LLP
- 主分类号： G06F1/00
- IPC分类号： G06F1/00
摘要：
Novel circuitry and methodology for detecting a Powered Device (PD) in a system for providing power to the PD. PD detection circuitry detects the PD in a first mode by providing detection current to probe the PD, and in a second mode by providing detection voltage to probe the PD. A control circuit determines that the PD is a valid device if the PD is detected both in the first mode and in the second mode.
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