Receiver and channel compatible encoding/decoding system for hig

Details Receiver and channel compatible encoding/decoding system for hig Receiver and channel compatible encoding/decoding system for hig

1990-03-26

1996-10-01

Harvey, David E.

Television

Bandwidth reduction system

Format type

348435, 348434, 386 37, 386123, 386131, H04N 700

Patent

active

055614671

ABSTRACT:
High resolution vertical and horizontal components of a high definition video signal are combined with a standard broadcast system video signal, such as the NTSC system, in which high frequency horizontal resolution components are sampled and used to modulate at least a first sub-carrier signal. The first sub-carrier is frequency interleaved onto the standard broadcast signal. Vertical high resolution components are time compressed and time division multiplexed onto top and bottom portions of the standard broadcast signal. The modified broadcast signal can be decoded by a standard receiver to display a standard resolution video image, while receivers designed to decode the modified signal can time division demultiplex the vertical high resolution components and demodulate the horizontal high resolution components, combine these components with the standard components, and generate a high definition video image.

REFERENCES:
patent: 4961112 (1990-10-01), Sugimori et al.

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