Television – Two-way video and voice communication – User positioning
Patent
1992-10-23
1995-05-23
Urban, Edward F.
Television
Two-way video and voice communication
User positioning
455 42, 455 62, 348 12, H04H 102
Patent
active
054185599
ABSTRACT:
One or more channels in a multi-channel cable television distribution system is used for the transmission of interactive television (ITV) signals in the form of packetized digital information from the cable system headend to subscribers. A converter at each subscriber location is connected between the cable system and the subscriber's television receiver. Such converter contains a receiver for the ITV channels. Control packets in the ITV signals are addressed to individual converters to enable the receipt of one or more virtual channels by a converter. The converter decodes and expands the packetized digital information in such enabled channels and generates a conventional video signal, which is transmitted to the subscriber's television receiver on one of the channels used for the ITV signal from the headend, replacing the packetized digital information. The remaining channels from the cable system are forwarded to such television receiver unaltered. Thus, all cable-ready features of the subscriber's television receiver are usable. In alternate embodiments of the invention, the video signal generated by the converter is derived from one or more sources. Examples of such sources are an additional receiver adapted to receive a conventional television signal from the cable system and local text or symbol generators.
REFERENCES:
patent: Re31735 (1984-11-01), Davidson
patent: 3746780 (1973-07-01), Stetten et al.
patent: 4439784 (1984-03-01), Furukawa
patent: 4461032 (1984-07-01), Skerlos
patent: 4499568 (1985-02-01), Gremiller
patent: 4763191 (1988-08-01), Gordon et al.
patent: 4780757 (1988-10-01), Bryer et al.
patent: 4894789 (1990-01-01), Yee
patent: 4987486 (1991-01-01), Johnson et al.
patent: 5121476 (1992-06-01), Yee
patent: 5130792 (1992-07-01), Tindell et al.
patent: 5200823 (1993-04-01), Yoneda et al.
patent: 5231494 (1993-07-01), Wachob
AT&T Corp.
Green Geoffrey D.
Rosenblatt David M.
Urban Edward F.
LandOfFree
Multi-channel television converter for conventional and interact does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-channel television converter for conventional and interact, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-channel television converter for conventional and interact will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2143267