Invention Grant
US08214659B2 Communication device having pull-up voltage supply circuit supplying pull-up voltage via one power supply during standby state and another power supply during power-on state
有权
具有上拉电压供给电路的通信装置，在待机状态下经由一个电源提供上拉电压，并且在上电状态下提供另一个电源
- Patent Title: Communication device having pull-up voltage supply circuit supplying pull-up voltage via one power supply during standby state and another power supply during power-on state
- Patent Title (中): 具有上拉电压供给电路的通信装置，在待机状态下经由一个电源提供上拉电压，并且在上电状态下提供另一个电源
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Application No.: US12228822Application Date: 2008-08-15
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Publication No.: US08214659B2Publication Date: 2012-07-03
- Inventor: Atsuhiko Nagamune
- Applicant: Atsuhiko Nagamune
- Applicant Address: JP Daito-shi, Osaka
- Assignee: Funai Electric Co., Ltd.
- Current Assignee: Funai Electric Co., Ltd.
- Current Assignee Address: JP Daito-shi, Osaka
- Agency: Yokoi & Co., U.S.A., Inc.
- Agent Toshiyuki Yokoi
- Priority: JP2007-213715 20070820
- Main IPC: G06F1/00
- IPC: G06F1/00
Abstract:
A communication device includes a bus including a signal line supplied with a pull-up voltage Vp, a first power supply operating during both a standby state and a power-ON state, and supplies a source of a first predetermined voltage of 3.3V, a second power supply operating during only the power-ON state, and supplies a source of a second predetermined voltage of 5V, a first device driven by the first power supply, and capable of communicating via the bus when the pull-up voltage Vp is equal to either of 3.3V and 5V, a second device driven by the second power supply, and capable of communicating via the bus when the pull-up voltage Vp is equal to 5V, and a pull-up voltage supply circuit supplying the pull-up voltage Vp by the first power supply during the standby state, and supplying the pull-up voltage Vp by the second power supply during the power-ON state.
Public/Granted literature
- US20090055664A1 Communication Device Public/Granted day:2009-02-26
Information query
