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Class Information
Number: 348/628
Name: Television > Image signal processing circuitry specific to television > Transition or edge sharpeners > Vertical transition
Description: Subject matter wherein the transition is between pixels separated by line periods.

Sub-classes under this class:

Class Number Class Name Patents
348/629 Including horizontal transition 48

Patents under this class:
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Patent Number Title Of Patent Date Issued
8692938 Video processing device and video display device using same, and synchronization signal output method Apr. 8, 2014
8325273 System and method for vertical gradient detection in video processing Dec. 4, 2012
8264615 Split edge enhancement architecture Sep. 11, 2012
8184204 De-ring system and method for reducing the overshooting and undershooting of video signal in a scaler May. 22, 2012
8149337 Video processing apparatus and video processing method Apr. 3, 2012
8035746 Time base correction for digitized video signal Oct. 11, 2011
7916784 Method and system for inverse telecine and field pairing Mar. 29, 2011
7221404 Video signal processing method and device May. 22, 2007
7161636 Vertical sharpness adjustment device and TV receiver therewith Jan. 9, 2007
7119854 Method for deriving an objective sharpness metric Oct. 10, 2006
7006147 Method and system for MPEG chroma de-interlacing Feb. 28, 2006
6590617 Edge emphasis device, image forming apparatus, image signal processing method, and image forming method Jul. 8, 2003
6424383 Apparatus for correcting vertical contours Jul. 23, 2002
6330038 Video sharpness control device and method Dec. 11, 2001
5940141 Nonlinear vertical bandwidth expansion of video signals Aug. 17, 1999
5917554 Picture signal processing apparatus Jun. 29, 1999
5739870 Math engine for generating font gradients Apr. 14, 1998
5635991 Color signal processing system for a color television receiver Jun. 3, 1997
5581305 Automatic picture quality compensating method and apparatus Dec. 3, 1996
5581306 Vertical scaling for digital image data with aperture correction Dec. 3, 1996
5561473 Contour correction signal generating circuit Oct. 1, 1996
5526060 Luma/chroma decoder with demodulated control signal Jun. 11, 1996
5467145 Circuitry for enhancing detail in color video signals Nov. 14, 1995
5446503 Vertical detail enhancement with stepped return coring Aug. 29, 1995
5430499 Apparatus for correcting vertical aperture of an image Jul. 4, 1995
5384602 Device for the filtering of a video signal Jan. 24, 1995
5363140 Video signal conversion system with a vertical enhancement circuit Nov. 8, 1994
5327228 System for improving the quality of television pictures using rule based dynamic control Jul. 5, 1994
5268758 Horizontal line interpolation circuit and image pickup apparatus including it Dec. 7, 1993
5231497 Method of interpolating one video image field to create an interlaced image field Jul. 27, 1993
5227883 Method and apparatus for motion aperture correction Jul. 13, 1993
5170248 Motion-adaptive vertical contour compensator in television set Dec. 8, 1992
5150214 Method and circuit for correction of horizontal edges Sep. 22, 1992
4980755 Circuit for enhancing a color difference signal by utilizing the change of a luminance signal Dec. 25, 1990
4967263 Widescreen television signal processor system with interpolator for reducing artifacts Oct. 30, 1990
4931858 Waveform improving apparatus Jun. 5, 1990
4912551 Circuit for enhancing a color difference signal by utilizing the change of a luminance signal Mar. 27, 1990
4882628 Amplitude characteristics of TV vertical frequency signal Nov. 21, 1989
4807040 Signal processing filter for an image projection device utilizing an oil film Feb. 21, 1989
4750033 Comb filter, chrominance and luminance signal separating circuit for modifying the level-frequency characteristic of the luminance signal Jun. 7, 1988
4739395 Circuit arrangement for increasing the definition of color contours of a color television signal using selective edge enhancement Apr. 19, 1988
4698673 Video signal processing Oct. 6, 1987
4694331 Vertical transition processor for a comb filter Sep. 15, 1987
4682213 Magnitude independent hanging dot detector Jul. 21, 1987
4658295 Vertical contour correction device Apr. 14, 1987
4656501 Image transition detector Apr. 7, 1987
4647960 Vertical contour emphasis de-emphasis circuit Mar. 3, 1987
4602278 Non-linear processor for video signal vertical detail component Jul. 22, 1986
4593310 Video chroma controller gating chrominance signals by the luminance signal Jun. 3, 1986
4583115 Circuit for and method of broadband comb filtering a composite video signal which has been double-side band detected Apr. 15, 1986

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