Television – Image signal processing circuitry specific to television – Special effects
Patent
1993-12-22
1995-08-29
Groody, James J.
Television
Image signal processing circuitry specific to television
Special effects
348590, 345118, 395157, H04N 974
Patent
active
054464994
ABSTRACT:
An apparatus for use in a low-bit rate coding system is provided for preprocessing a video signal including interlaced even- and odd-numbered fields, each of the fields having video lines, and each of said lines consisting of pixels, resulting from scanning an image, to selectively define a window within the image before the video signal is coded for transmission in the low-bit rate coding system. The apparatus comprises a field window signal generator for providing a field window signal to enable the selective sampling of the field, a vertical window signal generator, in response to the fields window signal, for producing a vertical window signal to define the lines in the sampled field, and a horizontal window signal generator, in response to the vertical window signal, for producing a horizontal window signal to define the pixels for each of the derived lines.
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Daewoo Electronics Co., Inc.
Grant Chris
Groody James J.
Pinsak William F.
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