Broad band switching system

Details Broad band switching system Broad band switching system

1980-11-04

1982-08-17

Britton, Howard

Facsimile and static presentation processing

Static presentation processing

Attribute control

358181, 370 4, 370 58, 455608, 455617, H04N 718, H04B 900

Patent

active

043452736

ABSTRACT:
The exemplary embodiment may be used for television (TV) signals and, if desired, also for radio, digital telephone, picture screen text and/or television telephone signals. For the reduction of the circuit-technical outlay of the actual broad band switching network, each TV program (Pl . . . Pp) is multiply supplied to a program-individual input (El . . . Ep) of the broad band switching network in time-division multiplex in a plurality of time channels; via the broad band switching network, each subscriber (Tq . . . Tt) has simultaneous access in the plurality of time channels to a corresponding plurality of programs (Pl . . . Pp). In the broad band switching network, the individual program signal sources (Pl . . . Pp) are respectively connected to coupling point switches belonging to the respective input (El . . . Ep) and leading to the individual outputs, being connected via a fan-out arrangement of constantly unlocked ECL elements respectively exhibiting a plurality of outputs; said coupling point switches can likewise be realized by means of ECL linkage elements.

REFERENCES:
patent: 3980831 (1976-09-01), Mertel
patent: 4274112 (1981-06-01), Leysieffer
Electronics Letters, vol. 13, No. 25, Dec. 1977, pp. 765-766, R. Tell et al. "Multiplexer at 5 Gbit/s for Fibre-Optical Communication Systems".
Pfannschmidt "Arbeitsgeschwindigkeitsgrenzen von Koppelnetzwerken fur Breitband-Digitalsignale" Dissertation, Technical University, Braunschweig, 1978, pp. 42-45.
Bauch "Kunftige Kommunikationstechnik mit Lichtleitern" ntz, vol. 32 (1979), No. 3, pp. 150-153.

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