Radio and television distribution system

Details Radio and television distribution system Radio and television distribution system

1994-10-24

1996-06-25

Harvey, David E.

Television

Special applications

Manufacturing

370 55, 370 691, 359115, 359125, H04N 722

Patent

active

055304710

ABSTRACT:
A distribution system, useful with radio and television distribution, for distributing a signal having a plurality of channels includes a central station. The central station produces a first frequency division multiplexed signal in which signals from a plurality of channels or channel groups are frequency-converted and combined, and introduces the first frequency division multiplexed signal into transmission media of the distribution system. The first frequency division multiplexed signal may include occupied channels, freely selectable occupied channels, and free channels. A plurality of further stations receive the first frequency division multiplexed signal from the central station and process it with signals of a plurality of further channels to produce a second frequency division multiplexed signal. The signals of the plurality of further channels may be put in free channels, or used to replace signals in freely selectable occupied channels of the first frequency division multiplexed signal. A plurality of user devices receive the second frequency division multiplexed signal from at least one of the plurality of further stations, and split it into individual channel or channel group signals for user access.

REFERENCES:
patent: 4771456 (1988-09-01), Martin et al.
patent: 4864613 (1989-09-01), Van Cleave
patent: 4989199 (1991-01-01), Rzeszewski
patent: 5461612 (1995-10-01), Gockler et al.
Terry, J "Alternative Technologies and Delivery Systems for Broadband ISDN Access" IEEE Communications Magazine, Aug. 1992.
Grant, William,Cable Television, Reston Publishing Company, 1983, pp. 227-229.
Slater, J. N., Calbe Television Technology, Ellis Horwood Limited, 1988, pp. 30-37.

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