Start code for signalling bits

Details Start code for signalling bits Start code for signalling bits

1996-03-13

1997-05-06

Kostak, Victor R.

Television

Bandwidth reduction system

Format type

348474, H04N 7015

Patent

active

056275927

ABSTRACT:
In an extended television signal having signalling bits for conveying control information to control an extended decoder, the signalling bits include a start code and data bits. The start code's main lobe of spectral energy resides in the lower spectral area of a baseband television signal below 2 MHz and preferably below 1.7 MHz. The start code is preferably (almost) DC-free, and the start code has good aperiodic correlation properties and a predetermined minimum bit Hamming distance to the data bits when shifted in the direction of the data bits following the start code.

REFERENCES:
patent: 4701939 (1987-10-01), Stutt et al.
patent: 4888641 (1989-12-01), Isnardi et al.
patent: 4912549 (1990-03-01), Altman et al.
patent: 4943847 (1990-07-01), Katznalson
patent: 5301023 (1994-04-01), Zato
patent: 5323236 (1994-06-01), Tichelaar et al.

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