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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 5894327 |
Video display system with AKB responsive screen grid supply |
Apr. 13, 1999 |
| 5892555 |
Video signal clamping circuit |
Apr. 6, 1999 |
| 5808699 |
Visual image signal processing apparatus using arithmetic operation on brightness reference signal overlaid in fly-back period of input visual image signal |
Sep. 15, 1998 |
| 5798802 |
Video signal clamping circuit |
Aug. 25, 1998 |
| 5708482 |
Image-signal clamping circuit for electronic endoscope |
Jan. 13, 1998 |
| 5657098 |
Control circuit for use with a cut-off adjusting circuit and a drive adjusting circuit |
Aug. 12, 1997 |
| 5638137 |
Configurable video output channel architecture |
Jun. 10, 1997 |
| 5502498 |
Clamp signal generation-control circuit and a method therefor |
Mar. 26, 1996 |
| 5461489 |
Image signal processing device |
Oct. 24, 1995 |
| 5406336 |
Contrast and brightness control whereby both are based on the detected difference between a fixed black level in the video signal and the black peak value |
Apr. 11, 1995 |
| 5361101 |
Preamplifier for multimedia display |
Nov. 1, 1994 |
| 5345279 |
Image signal processing apparatus with analog to digital image conversion |
Sep. 6, 1994 |
| 5128764 |
Level correcting circuit having switched stages of differing time constants |
Jul. 7, 1992 |
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