Apparatus for multiplexing digital video and a digital sub-signa

Details Apparatus for multiplexing digital video and a digital sub-signa Apparatus for multiplexing digital video and a digital sub-signa

1992-06-09

1995-04-18

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3701101, 358336, H04J 304

Patent

active

054084741

ABSTRACT:
A system disclosed in the present invention comprises a video A/D converter for converting an analog video signal to a digital video signal, a sync separator for detecting a sync signal period of the analog video signal, an invalid data stream detector for detecting an invalid data stream of a digital sub-signal having the invalid data stream added thereto at a predetermined period, a selector for selecting the bits of the digital sub-signal, the digital video signal and a sync pattern in accordance with the detection outputs of the invalid data stream detector and the sync separator, and an encoder for converting the output of the selector to a serial signal.

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H. J. Chao et al., "A Packet Video System Using the Dynamic Time Division Multiplexing Technique.", IEEE Global Telecommunications Conference & Exhibition, vol. 2, 28 Nov. 1988, Hollywood, Florida, pp. 767-772.
C. W. Lundgren et al., "Applications of Video on Fiber Cable."; IEEE Communications Magazine, vol. 24, No. 5, May 1986, Piscataway, New Jersey, pp. 33-49.

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