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6408334 |
Communications system for multiple computer system management circuits
A communications system for multiple computer system management circuits to enable remote management of the computer systems via a remote management system. The management circuits are operably...
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5404363 |
Two-fail-operational fault-tolerant multiple clock system
A multiple-fail-operational fault-tolerant clock having a plurality of interconnected and identical clock modules, that provides a fault tolerant clock signal despite some clock module failures....
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4846310 |
Signal transmission apparatus for elevator
A signal transmission apparatus for an elevator in a multi-story building comprises a small number of signal lines which carry, in a time-shared fashion, hall call signal and hall call registration...
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4814761 |
Method and apparatus for communication control in loop communication network
In a communication network in which a main station and several I/O systems are connected by a closed-loop communication line, the communication line includes a data channel and a clock pulse...
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4674084 |
Network system
A network system having a single-wire common signal transmission line for interfacing a serial bit data string between a plurality of data stations connected thereto comprises: (a) first means for...
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4639913 |
Method and equipment for electronically transmitting informations
There are described a method and an equipment for electronically transmitting informations, whereby by means of a pulse generator, a clock pulse series is generated, said pulses are fed to a closed...
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4639912 |
Signal transmission apparatus
A signal transmission apparatus from a control unit to a plurality of memory units which correspond to signal terminal means and which are connected in series with each other, wherein the memory...
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4569045 |
3-Wire multiplexer
The invention provides a 3-wire multiplexing system exhibiting high noise immunity, particularly suitable for industrial control applications. A master station provides AC power, and clocking and...
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4525837 |
Digital signal transmission system
In a digital signal transmission system for effecting time-division multiplexing/circuit switching transmission of data in the form of packets by means of telecommunication cable, a packet...
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