System for dynamic real-time television channel expansion

Details System for dynamic real-time television channel expansion System for dynamic real-time television channel expansion

1994-05-20

1996-07-09

Metjahic, Safet

Television

Basic receiver with additional function

For display of additional information

348461, 348 6, H04N 716

Patent

active

055349412

ABSTRACT:
A system is provided by which a single active video signal, along with a plurality of audio and data streams can be made to represent a number of different screens of information at a cable TV set. The system uses essentially only the bandwidth of a single video channel to provide a viewer with a plurality of screens, one or more of which include the same active video picture, simultaneously with other screens which display only audio and text/graphics. This multiple-screen capability is provided by a mapping function which creates an effective plurality of channels that are dynamically and seamlessly switched.

REFERENCES:
patent: 5008750 (1991-04-01), Gomikawa
patent: 5023720 (1991-06-01), Jardins
patent: 5138460 (1992-08-01), Egawa
patent: 5157491 (1992-10-01), Kassatly
patent: 5200823 (1993-04-01), Yoneda et al.
patent: 5208669 (1993-05-01), Richards
patent: 5262860 (1993-11-01), Fitzpatrick et al.
patent: 5359601 (1994-10-01), Wasilewski et al.

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