Multiplex communications – Wide area network – Packet switching
Patent
1990-12-20
1992-06-16
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 857, 3701051, 370 99, H04J 302
Patent
active
051230151
ABSTRACT:
Each unit of a daisy chain of separate and independent multiplexing units (10,12,14) is arranged to accept a group of local audio inputs (Audio 1-Audio 8) and an additional input (18,20,22) from a prior unit in the chain to time division multiplex the additional input with the local units. Each unit provides a single serial bit stream output (20,22,24) which comprises the additional input to the next identical multiplexer unit in the chain. The next multiplexer unit time division multiplexes all of its inputs to provide a single output which includes a serial presentation of its own local inputs and the local inputs of the preceding multiplexer unit of the chain. This single serial output of the next multiplexer next forms the additional input of a still further multiplexer unit of the chain, which itself may have its own local inputs. The third multiplexer unit provides a single output that is a serial presentation of the local inputs of all three multiplexers. Additional multiplexer units can be added to the chain as may be necessary or desirable to accommodate reconfiguration of systems with which the multiplexers are used.
REFERENCES:
patent: 3995119 (1976-11-01), Pachynski, Jr.
patent: 4504943 (1985-03-01), Nagano et al.
patent: 4719624 (1988-01-01), Bellisio
patent: 4744082 (1988-05-01), Fujimura et al.
patent: 4893306 (1990-01-01), Chao et al.
Brady, Jr. Kenneth A.
Sklar Richard E.
Denson-Low Wanda K.
Gudmestad Terje
Hughes Aircraft Company
Jung Min
Olms Douglas W.
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