Broad band network system
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United States of America Patent
Stats
-
Jan 14, 1986
Grant Date -
N/A
app pub date -
Dec 22, 1983
filing date -
Dec 28, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A signal multiplex transmission system has predetermined work stations included in a plurality of terminal units which respectively process data in predetermined forms, and a private branch exchange or PBX. A transmission line is connected between the predetermined work stations and the PBX to commonly transmit frequency-multiplexed data from the PBX to the predetermined work stations. A separation filter separates first multiplexed signals supplied from the predetermined work stations from second multiplexed signals from other work stations and supplies the separated first multiplexed signals to the PBX independently of the second multiplexed signals, which signals are amplified by an amplifier. A mixer is connected to the PBX, the amplifier and a reception line. The first and second multiplexed signals are mixed by the mixer, and composite data is sent onto the reception line. The signal lines are used to transmit the multiplexed signals having the same frequency band.
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