Multiplex communications – Wide area network – Packet switching
Patent
1986-03-05
1987-12-08
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
375108, H04J 306, H04L 700
Patent
active
047122110
ABSTRACT:
A network system having a plurality of data transmitters and receivers interconnected to a data transmission line and to a time series code string signal transmission line. In the network system, a first pulse train signal according to a predetermined time series code is produced and sent on the time series code string signal transmission line. In each data transmitter and receiver, the first pulse train signal is received and demodulated to form an intermediate synchronization signal and a plurality of predetermined code string patterns. When one of the plurality of predetermined code string patterns accords with a predetermined address code in one of time slots, either data transmitter or data receiver transmits or receives a data of a predetermined number of bits in a Non-Return To Zero code to or from the data transmission line in synchronization with a data transmission and reception enable clock signal predetermined by a data transmission and reception enable clock (oscillator) whose frequency variation is corrected by means of the intermediate synchronization signal one time or a plurality number of times by a predetermined number of bits of data so that a reliable data transmission without synchronization deviation between the data transmitter and data receiver(s) and without generation of high frequency noise can be achieved.
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patent: 3593160 (1971-07-01), Moore
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patent: 4359770 (1982-11-01), Suzuka
patent: 4484190 (1984-11-01), Bedard
patent: 4621360 (1986-11-01), Inoue
Ein Byteserielles Bitparalleles Schnittstellensystem fur Programmierbare Mebgerate--DIN IEC 625 Teil 1 Mai 1981.
Wie Funktioniert der IEC-Bus?--Elektronik 1975.
Microprocessor Tnterfacing Techniques-Zaks.
Abe Noriyuki
Okada Kazuyoshi
Suzuki Tadashi
Nissan Motor Company Limited
Olms Douglas W.
Scutch III Frank M.
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