Method and system for 2D comb filtering of a PAL video signal

Details Method and system for 2D comb filtering of a PAL video signal Method and system for 2D comb filtering of a PAL video signal

2008-07-01

2008-07-01

Lee, M. (Department: 2622)

Television

Image signal processing circuitry specific to television

Chrominance-luminance signal separation

C348S665000

Reexamination Certificate

active

10943596

ABSTRACT:
Methods and systems for 2D comb filtering of a PAL video signal are provided. The method may comprise generating a plurality of interpolated pixels for corresponding video samples in non-adjacent pixel lines for a video frame. At least one direction of least bandwidth may be determined among the video samples and the interpolated pixels. The method may blend combing in the determined direction of least bandwidth. A plurality of interpolated pixels for corresponding video samples may be generated in a first pixel line of the video frame. The plurality of interpolated pixels in the first pixel line may be shifted, so that each of the plurality of interpolated pixels in the first pixel line is one quarter cycle phase-shifted from a corresponding adjacent pixel in the first pixel line.

REFERENCES:
patent: 4974065 (1990-11-01), Murakami et al.
patent: 5523850 (1996-06-01), Kanda et al.
patent: 6300985 (2001-10-01), Lowe et al.

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