Television – Image signal processing circuitry specific to television – Gray scale transformation
Reexamination Certificate
2008-05-13
2008-05-13
Natnael, Paulos M. (Department: 2622)
Television
Image signal processing circuitry specific to television
Gray scale transformation
Reexamination Certificate
active
07372507
ABSTRACT:
Methods for improving video images by making real-time gamma correction adjustments to such images are described. More particularly, gamma correction adjustments may be optimized for each individual frame of a video image by first segregating the pixels of an image according to brightness. The segregated pixels may then be used in computing weighting calculations, which modify the transfer functions used for image display. In some embodiments, the video signal may be conditioned between the standard gamma curve and the S-shaped gamma curve used in mapping video signal input to intensity output. In this manner, frame-to-frame gamma correction adjustments can be made, thereby optimizing the resulting image. Related systems for making frame-to-frame gamma correction adjustments are also described.
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Hutchison David C.
Ikeda Roger M.
Kempf Jeffrey M.
Brady III Wade James
Natnael Paulos M.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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