AC synchronization with miswire detection for a multi-node serial communication system
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United States of America Patent
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Apr 16, 2002
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N/A
app pub date -
Sep 11, 2000
filing date -
Sep 11, 2000
priority date (Note) -
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Abstract
A controller area network (CAN) has a plurality of nodes connected to transmit and receive data over a serial data line. An AC power source is also connected to each node. Each node senses the AC power waveform and synchronizes bit transmission and bit detection with the waveform. In a preferred embodiment, each node includes a circuit that detects zero crossings by the AC waveform, providing two accurately synchronized bit intervals per complete AC cycle. A preferred version of the invention includes hardware and software that detects miswires of the node to the data and power lines.
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