| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems that it is difficult to electrically insulate a bus constituted of many signals like a GP-IB bus, constitution is complicated though the signals are converted to optical signals and transmitted, and delay is increased. SOLUTION: An equipment to be a controller is fixed, bus direction control signals indicating the direction of signals are prepared from a talker command, control signals outputted by the controller are electrically insulated in a unidirectional insulation circuit, the control signals of a data bus and the like are electrically insulated in a bidirectional insulation circuit, and the direction of the signals in the bidirectional insulation circuit is decided by the bus direction control signals. By fixing the equipment to be the controller, the GP-IB bus is electrically insulated by simple constitution. COPYRIGHT: (C)2007,JPO&INPIT
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