Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1985-08-27
1987-02-03
Orsino, Jr., Joseph A.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
250578, 455617, H04B 900
Patent
active
046413766
ABSTRACT:
An optoelectronic switching network for multi-service wide-band telecommunications systems includes, on the one hand, a selector board (receiver or emitter) carrying plural compound optoelectronic units (selector units) each including a matrix of optoelectronic cells (photo diodes or light emitting diodes) and cell selection means and, on the other hand, a board (emitter or receiver) carrying plural optoelectronic units (conjugated units) optically conjugated with each compound unit of the selector board. To reduce the number of selector units, the selection means of each selector unit include means for respectively connecting cells, each of which is selected in a zone among plural zones from the matrix, to the links of plural channel links connected to the selector unit.
REFERENCES:
patent: 4074142 (1978-02-01), Jackson
patent: 4229071 (1980-10-01), d'Auria
patent: 4481510 (1984-11-01), Hareng et al.
patent: 4512036 (1985-04-01), Laor
Gfeller-Optical Multiplexing-IBM Tech. Discl. Bull., vol. 22, No. 1, Jun. 1979, pp. 345, 346.
Robin-Champigneul Yves
Rozenwaig Boris
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