Device for reproducing picture signals in letter-box format

Details Device for reproducing picture signals in letter-box format Device for reproducing picture signals in letter-box format

1993-10-07

1996-05-14

Kostak, Victor R.

Television

Format

Including additional information

348913, 348432, 358310, H04N 708

Patent

active

055172520

ABSTRACT:
An apparatus for recording/reproducing television signals transmitted in the letter-box format whereby 16:9 aspect ratio picture information is sandwiched between black areas corresponding to the top and bottom portions of the display, and wherein auxiliary items of information can be modulated onto the color sub-carrier of the television signal. The apparatus includes a luminance channel, an adaptive filter and a digital chrominance decoder for separating the television signal into a chrominance component and a luminance component. First apparatus digitally demodulates the auxiliary information from the color sub-carrier. Second apparatus applies the auxiliary signals to the luminance channel during the scanning of the black areas.

REFERENCES:
patent: 4119999 (1978-10-01), Gallo
patent: 5208620 (1993-05-01), Sugimori et al.
patent: 5229847 (1993-07-01), Gibson
Adaptive Luminanz-Chrominanz-Trennung mit unterschiedlich farbtraregverkoppelten Samplingphasen by R. Schweer & M. Plantholt Fernsehund Kino-Technik 44 Jahrgang Nr. Dec. 1990 pp. 673 to 681.

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