Multiplex communications – Wide area network – Packet switching
Patent
1986-03-20
1988-01-19
Orsino, Jr., Joseph A.
Multiplex communications
Wide area network
Packet switching
370 29, H04B 900
Patent
active
047208279
ABSTRACT:
In an optical communication set a local transmission equipment, in which a call switch is previously pressed, becomes a master side. The local transmission equipment at the other side automatically becomes a slave side in response to a burst digital signal transmitted from the master side. The master side equipment supervises the transmitting signal and the receiving signal, adds a signal for deciding a sync state in the transmitting signal, and transmits it to the slave side equipment. The slave side equipment detects the sync signal, controls the timing of its transmitting signal, and transmits the signal to the master side equipment, thereby making a communication state of two-way time division optical communication having a predetermined sync relationship. When the transmission call of either side is made, the relationship between the master side and the slave side is established. Since the equipment of the slave side controls its transmitting timing on the basis of the sync information from the master side equipment, two-way time division optical communication can be performed by the same equipments for an optical line having any length, and optimal values of the transmitting level can be set to one another.
REFERENCES:
patent: 2498635 (1950-02-01), Bailey
patent: 4049908 (1977-09-01), Knorpp et al.
"The Reports of the Institute of Electronics and Communication Engineers of Japan, the Section of Switching" 1978-72.
"The Reports of the Institute of Electronics and Communication Engineers of Japan, the Section of Communication System" 1983-72.
Anritsu Corporation
Orsino Jr. Joseph A.
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