Video line card switch for use in a video line card shelf in a s

Details Video line card switch for use in a video line card shelf in a s Video line card switch for use in a video line card shelf in a s

1994-02-07

1996-04-30

Urban, Edward F.

Television

Two-way video and voice communication

User positioning

348 12, 455 42, H04N 710

Patent

active

055129366

ABSTRACT:
In a telecommunications system providing switched video services, a video line card includes a switch arrangement for selecting a plurality of channels from a greater plurality of available channels and for providing said selected channels in a fixed bandwidth that may be received by a subscriber. A plurality of tuners are used to select the channels and to provide the channels on an intermediate frequency, which frequency is thereafter converted to a distribution channel frequency acceptable by the subscriber.

REFERENCES:
patent: 4718107 (1988-01-01), Hayes
patent: 4811335 (1989-03-01), van Baardwijk et al.
patent: 4891694 (1990-01-01), Way
patent: 5029333 (1991-07-01), Graves et al.
patent: 5073930 (1991-12-01), Green et al.
patent: 5189673 (1993-02-01), Burton et al.
patent: 5303229 (1994-04-01), Withers et al.

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