Multiplex communications – Wide area network – Packet switching
Patent
1993-08-31
1995-03-14
Hsu, Alpus
Multiplex communications
Wide area network
Packet switching
370 851, 370 8511, 3701001, 371 54, 371 471, 3408252, H04J 306, H04L 514
Patent
active
053982380
ABSTRACT:
A data communication system transmits a first data signal from a first control unit to a second control unit. The data communication system includes a clock signal line for transmitting a clock signal between the first and second control units. In performing data communication, the first control unit first transmits a first trigger signal via a first trigger signal line to the second control unit for informing the second control unit of the start of transmission of the first data signal. The first control unit then transmits the first data signal via a first data signal line to the second control unit. A second trigger signal line transmits a second trigger signal from the second control unit to the first control unit for informing the first control unit of the start of transmission of the second data signal. The second control unit then transmits the second data signal via a second data signal line to the first control unit in synchronization with the clock signal.
REFERENCES:
patent: 3988716 (1976-10-01), Fletcher et al.
patent: 4093825 (1978-06-01), Gladstone et al.
patent: 4301532 (1981-11-01), Janetzky
patent: 4621360 (1986-11-01), Inoue
patent: 4715031 (1987-12-01), Crawford et al.
patent: 4841520 (1989-06-01), Steely
Inagawa Shinichi
Matsuda Shohei
Yahagi Toshio
Honda Giken Kogyo Kabushiki Kaisha
Hsu Alpus
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