Invention Grant
- Patent Title: Signal transmission circuit, integrated circuit and electric device including thereof for transmitting a plurality of signals each having different transmission speed
- Patent Title (中): 信号传输电路，集成电路及其电子装置，用于发送各自具有不同传输速度的信号
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Application No.: US13923555Application Date: 2013-06-21
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Publication No.: US08823438B2Publication Date: 2014-09-02
- Inventor: Daiki Yanagishima , Toshiyuki Ishikawa
- Applicant: Rohm Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Fish & Richardson P.C.
- Priority: JP2012-140966 20120622
- Main IPC: H03K3/00
- IPC: H03K3/00 ; G06F1/04
Abstract:
A signal transmission circuit 200 transmits input signals IN1 and IN2 each having a different transmission speed in a mutually electrically insulated manner. Signal transmission circuit 200 includes a pulse generation unit 210, transmission units 230 and 235, a latch circuit 250, and an oscillation determination circuit 270.Transmission units 230 and 235 transmit pulse signals PLS_A and PLS_B generated by pulse generation unit 210 in accordance with logical states of input signals IN1 and IN2 to latch circuit 250 and oscillation determination circuit 270 in a mutually electrically insulated manner. Latch circuit 250 restores input signal IN1 in accordance with rising edges of pulse signals PLS_A and PLS_B. Oscillation determination circuit 270 restores input signal IN2 based on oscillation states of pulse signals PLS_A and PLS_B. With such a configuration, a plurality of signals each having a different transmission speed can be transmitted in a mutually electrically insulated manner.
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