Digital apparatus for contour enhancement of video signal

Details Digital apparatus for contour enhancement of video signal Digital apparatus for contour enhancement of video signal

1995-12-22

1998-06-16

Hsia, Sherrie

Television

Camera, system and detail

Combined image signal generator and general image signal...

348625, 348630, H04N 964, H04N 5208

Patent

active

057679002

ABSTRACT:
Digital processing apparatus for correcting an image enhancement signal having a shape includes a peak detector for detecting and holding peak levels of the image enhancement signal and an adjustment circuit, responsive to the peak levels, for correcting the image enhancement signal to reduce its peak levels while substantially maintaining its shape and to limit the signal levels of the image enhancement signal to a range of levels substantially between a first predetermined peak limit and a second predetermined peak limit.

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IEEE Journal of Solid-State Circuits, vol. 26, No. 5, May 1991, New York. US. pp. 727-737, XP000228230, D'Luna: "a systems approach to custom VLSI for a digital color imaging system", paragraph III.E: Fig. 10, 13.
Fernseh Und Kinotechnik, vol. 43, No. 8, Jun. 1989, Berlin DE, pp. 417-426. XP000053812 VOGT: "zweidimensionale digitale Aperturentzerrung fur HDTV-Kameras", paragraph 2: Fig. 1.

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