Multiplex communications – Wide area network – Packet switching
Patent
1982-02-19
1984-10-02
Orsino, Jr., Joseph A.
Multiplex communications
Wide area network
Packet switching
370 54, 370 59, 358 86, H04M 318
Patent
active
044751877
ABSTRACT:
In a broad-band communications system, whose subscriber lines are preferably formed by light wave guides, and by way of which television broad-band signals are transmitted as pulse-modulated signals, for television program distribution, each television program is supplied, in a plurality of time channels, to time channel individual inputs in program source individual switching planes of a broad-band switching arrangement. In order to increase the blocking attenuation, crosspoint switches which lead to one and the same output are connected via multiplex logic linking elements to the output in question of the broad-band switching arrangement. When a crosspoint switch is blocked, the broad-band signal in question then experiences the cascaded blocking attenuation of a crosspoint switch and a threshold value multiplex circuit. The crosspoint switches and the threshold value multiplex circuits are preferably formed by logic linking elements constructed in accordance with ECL technology.
REFERENCES:
patent: 4345273 (1982-08-01), Barabas et al.
patent: 4382266 (1983-05-01), Panzer
Digital Troubleshooting by Richard E. Gasperini, .COPYRGT.1975, pp. 8-6, 8-7.
Greer Timothy K.
Orsino Jr. Joseph A.
Siemens Aktiengesellschaft
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