Method and circuit for transmitting a direct current component o

Details Method and circuit for transmitting a direct current component o Method and circuit for transmitting a direct current component o

1991-12-17

1994-04-26

Kostak, Victor R.

Television

Format conversion

Changing number of lines for standard conversion

348384, H04N 713

Patent

active

053071433

ABSTRACT:
Disclosed is a method of processing the color signals of a high definition television (HDTV) comprising the steps of 3-dimensionally sampling a given band of image signals into M bands (M is decimation of a positive integer) vertically, horizontally and temporally, further sampling the 3-dimensionally sampled images divided into 4 bands, vertically and horizontally separating DC signals from the lowest frequency regions of the 4 bands, the DC signals being digitally transmitted, transmitting the analog signals of the 4 bands together with the digital data, interpolating the digital data, vertically and horizontally interpolating the interpolated digital data and the analog signals, and 3-dimensionally reinterpolating the output of the sixth step in the vertical, horizontal and time axes to expand.

REFERENCES:
patent: 4817182 (1989-03-01), Adelson et al.
patent: 4918524 (1990-04-01), Ansari et al.
patent: 4943855 (1990-07-01), Bheda et al.
patent: 4967272 (1990-10-01), Kao et al.
patent: 4969040 (1990-11-01), Gharavi
patent: 5040062 (1991-08-01), Knauer et al.
patent: 5048111 (1991-09-01), Jones et al.
patent: 5097331 (1992-03-01), Chen et al.
patent: 5136374 (1992-08-01), Jayant et al.

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