Telecommunications – Wireless distribution system
Patent
1997-02-06
2000-09-12
Kostak, Victor R.
Telecommunications
Wireless distribution system
348 11, 348 6, H04N 710
Patent
active
06118974&
ABSTRACT:
The present invention presents a multimedia signal distribution device that implements the Electronics Industry Association (EIA) "Node Zero" standard for a Consumer Electronics Bus (CEBus) signal distribution network. The preferred embodiment of the present invention comprises a block frequency conversion loop that is combined with other conventional electronic devices to accomplish the multimedia signal frequency conversion, filtering and distribution functions required of the ideal Node Zero device set forth in the EIA CEBus standard. The present invention preferably implements the CEBus block frequency conversion, input and output band-pass filtering, and signal amplification requirements by a block frequency conversion loop comprised of the following components which process the internal signal block in the following series order: (a) passive first low-pass or band-pass filter; (b) a 1000 MHz first frequency mixer; (c) an intermediate frequency (IF) filter; (d) a 38 dB signal amplifier; (e) a selectable second frequency mixer and (f) a tunable second low-pass or band-pass filter 11. Optionally, a broad-band quadrature signal phase shifting device may be implemented in conjunction with a signal coupling balun transformer at the input and output, respectively, of the first frequency mixer. This quadrature phase shifting improves the filtering of the internal signal block after the quadrature outputs have been shifted by the first frequency mixer to an intermediate frequency (IF) signal range.
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"Physical and Media Specifications of the CXBus"; O'Brian, Jr.; IEEE Transaction on Consumer Electronics; vol. 37 # 3 Aug. 1991 pp. 359-366.
Holliday, III Cornelius E.
Jennison Michael T.
Nichols Edward C.
Parry Robert W.
Jennison Holding, Inc.
Kostak Victor R.
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