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Class Information
Number: 348/689
Name: Television > Image signal processing circuitry specific to television > Brightness control > With dc clamping
Description: Subject matter including means to set the black level of a TV signal to a reference value.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8685774 Method for fabricating three-dimensional gallium nitride structures with planar surfaces Apr. 1, 2014
8432494 Video signal output circuit Apr. 30, 2013
8390742 Semiconductor integrated circuit and video signal output circuit Mar. 5, 2013
8379149 Display apparatus and control method thereof Feb. 19, 2013
8171507 Using network server to establish TV setting May. 1, 2012
8159609 Image processing chip and related method for processing video Apr. 17, 2012
8125569 Dynamic contrast on displays using average picture level and histogram analysis Feb. 28, 2012
8102473 Image correction circuit, image correction method and image display Jan. 24, 2012
8059205 Image signal processing apparatus and image signal processing method for controlling optical black level of image signal Nov. 15, 2011
8045065 SOG signal detection circuit Oct. 25, 2011
7995142 Slice level adjustment unit and EPG data obtaining device using the same Aug. 9, 2011
7728888 Clamping circuit and digital camera system having the clamping circuit Jun. 1, 2010
7646412 DC level control method, clamp circuit, and imaging apparatus Jan. 12, 2010
7589795 Automatic clamping analog-to-digital converter Sep. 15, 2009
7468760 Apparatus and related method for level clamping control Dec. 23, 2008
7432918 Video signal processing circuit Oct. 7, 2008
7423698 Amplifier for amplifying input signal such as video signal and outputting amplified signal Sep. 9, 2008
7375572 Clamping circuit May. 20, 2008
7327399 Method and a circuit for deriving a synchronisation signal from a video signal Feb. 5, 2008
7295234 DC level control method, clamp circuit, and imaging apparatus Nov. 13, 2007
7233365 Digital DC restore methods and apparatus Jun. 19, 2007
7184097 On-screen display apparatus Feb. 27, 2007
7176985 Clamping circuit for video signals Feb. 13, 2007
7126645 Back-porch clamp Oct. 24, 2006
7106387 Keyed clamp circuit Sep. 12, 2006
7102698 Method and apparatus for controlling brightness of image processing device Sep. 5, 2006
7095452 Clamp circuit for clamping a digital video signal Aug. 22, 2006
7061531 Solid state imaging device having timing signal generation circuit and clamping circuit Jun. 13, 2006
7050116 Calibration device for a video input stage May. 23, 2006
7030936 Pedestal level control circuit and method for controlling pedestal level Apr. 18, 2006
6952240 Image sampling circuit with a blank reference combined with the video input Oct. 4, 2005
6791623 Image display system Sep. 14, 2004
6633340 Video signal processor Oct. 14, 2003
6580465 Clamp voltage generating circuit and clamp level adjusting method Jun. 17, 2003
6535255 Illumination intensity correcting circuit Mar. 18, 2003
6490004 Video signal receiver with level limited output Dec. 3, 2002
6490003 Video signal receiver with level limited output Dec. 3, 2002
6483549 Video signal receiver with level limited output Nov. 19, 2002
6400412 Video signal processing apparatus with time adjustment of digital chrominance signal Jun. 4, 2002
6320626 Apparatus and method for controlling brightness in a monitor screen Nov. 20, 2001
6317163 Video signal receiver with level limited output Nov. 13, 2001
6281943 Cut-off control circuit for adjusting white balance Aug. 28, 2001
6219107 Automatic AGC bias voltage calibration in a video decoder Apr. 17, 2001
6122002 Device and method for determining black point Sep. 19, 2000
6097443 Method and arrangement for the analog/digital conversion of a picture signal Aug. 1, 2000
6072540 Brightness control apparatus for video display appliance Jun. 6, 2000
5995166 Clamp circuit for clamping a video signal and a circuit for superimposing composite video signals Nov. 30, 1999
5978041 Image display system Nov. 2, 1999
5969762 Video signal driver including a cascode transistor Oct. 19, 1999
5929900 Signal processor circuit for endoscope systems of all-pixels readout type Jul. 27, 1999

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