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US 4,788,541 AGranted
Signal communication system
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorTorao Yamanaka
Life of this patent
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Abstract
A signal communication system provided in a board device has a signal input/output terminal board having a plurality of input/output terminals. When a signal is communicated between two board devices, some of the input/output terminals serve as an input signal terminal and the remainder as an output signal terminal in accordance with the manual selection thereof.
Claims17
A signal communication system for signal transmission between two contact and relay board devices via a cable, comprising:
- a signal input/output terminal board means operable for receiving signals from one of said two board devices signals therethrough and for providing signals to said one board device;
- a transmitter section means connected between said signal input/output terminal board means and said cable, said transmitter section means operable for receiving output signals from said one board device and for converting the same into desired logic signals of a bit serial format for supply to said cable for transmission to the other of said two board devices;
- a receiver section means connected between said signal input/output terminal board means and said cable, said receiver section means operable for receiving said logic signals from the other board device via said cable and for converting the same into signals of a desired format for supply to said signal input/output terminal board means for said one board device;
- and
- said signal input/output terminal board means including means for connecting terminals of said one of said two board devices either to said transmitter section means or to said receiver section means.
2 more elements
A signal communication system for serial signal transmission between two board devices via a cable, comprising:
- a single signal input/output terminal board means for receiving therethrough signals from and providing therethrough signals to one of said two board devices;
- transmitter means connected between said signal input/output terminal board means and the cable for receiving output signals from said one board device and converting the received output signals into logic signals of a bit serial format for supply to the cable for transmission to the other of said two board devices;
- receiver means connected between said signal input/output terminal board means and the cable for receiving the logic signals from the other of said two board devices via the cable and converting the received logic signals into signals of a desired format for supply to said input/output terminal board means of said one board device;
- terminal means having a plurality of input/output terminals associated with said input/output terminal board means, each of said input/output terminals connected to a terminal of said board device;
- and
- means for selectably connecting said receiver means or said transmitter means to said terminal means and for selecting at least one of said input/output terminals of said terminal means to be either an output terminal or a input terminal,
- thereby providing a flexible terminal interconnection for said one board device wherein each terminal of said one board device is connectable as either an input terminal connected to said receiver means or as an output terminal connected to said transmitter means.
4 more elements
Dependencies are inferred from the claim text.