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32. 发明授权

US09413566B2 Signal transmission circuit 有权
标题翻译：信号传输电路
公开(公告)号：US09413566B2
公开(公告)日：2016-08-09
申请号：US14812447
申请日：2015-07-29
申请人： DENSO CORPORATION , NIPPON SOKEN, INC.
发明人： Hiroyuki Mori , Keiji Shigeoka , Yoshifumi Kaku , Shogo Akasaki
IPC分类号： H04L25/03 , H04L25/02
CPC分类号： H04L25/0278 , H04L25/029 , H04L25/0292
摘要： A signal transmission circuit includes a transceiver, an impedance adjustment circuit, a first control circuit and a second control circuit. The impedance adjustment circuit realizes a low impedance state and a normal state of the transmission line. The first control circuit controls the impedance adjustment circuit to realize the low impedance state for a fixed period that is shorter than a width of one bit, when a change of a signal level on the transmission line is detected. The second control circuit controls the impedance adjustment circuit according to a transmission data transmitted from the transceiver, when detecting that a communication frame wins an arbitration by comparing the transmission data and the received data, to realize the low impedance state in an entire period where the signal level on the transmission line is recessive until transmission of the communication frame ends.
摘要翻译：信号传输电路包括收发器，阻抗调节电路，第一控制电路和第二控制电路。阻抗调整电路实现传输线的低阻抗状态和正常状态。当检测到传输线上的信号电平的变化时，第一控制电路控制阻抗调节电路实现比一个位的宽度短的固定周期的低阻抗状态。第二控制电路根据从收发器发送的发送数据来控制阻抗调整电路，当检测到通信帧通过比较发送数据和接收到的数据而获得仲裁时，在整个周期内实现低阻抗状态传输线上的信号电平是隐性的，直到通信帧的传输结束为止。

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