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Class Information
Number: 348/379
Name: Television > Cathode-ray tube display automatic black level bias control
Description: Subject matter including a device to regulate the cut-off potential of the cathode-ray tube.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8614768 Miniaturized imaging device including GRIN lens optically coupled to SSID Dec. 24, 2013
8035738 Apparatus and method of controlling black stretch Oct. 11, 2011
7950029 Method for interactive television using foveal properties of the eyes of individual and grouped users and for protecting video information against the unauthorized access, dissemination and us May. 24, 2011
7898557 Image displaying method, image displaying device, and contrast-adjusting circuit for use therewith Mar. 1, 2011
7792752 Video financial deposit Sep. 7, 2010
7719551 Image displaying method, image displaying device, and contrast-adjusting circuit for use therewith May. 18, 2010
7583322 Television and adjustment method for the same Sep. 1, 2009
7502077 Device and method for processing video signals to improve the black contrast Mar. 10, 2009
7403233 Video circuitry for controlling signal gain and reference black level Jul. 22, 2008
7286183 Device for generating a video image sharpness improvement signal Oct. 23, 2007
7286175 Bias control circuitry for cathode ray tube beam currents Oct. 23, 2007
7277136 Adaptive bandwidth control in a kinescope amplifier Oct. 2, 2007
7236203 Video circuitry for controlling signal gain and reference black level Jun. 26, 2007
7227559 Image displaying method, image displaying device, and contrast-adjusting circuit for use therewith Jun. 5, 2007
7187414 Circuit for stabilizing high tension voltage of CRT, and method thereof Mar. 6, 2007
7027098 Picture-signal processing apparatus and method using weighting for black-level control Apr. 11, 2006
6952235 Apparatus and method for controlling black stretch of video signal Oct. 4, 2005
6937287 Video processing apparatus and method Aug. 30, 2005
6937288 Beam current limiting circuit for use in a video projector Aug. 30, 2005
6900830 CRT display device with improved resistance to spot bun May. 31, 2005
6897900 Display apparatus comprising a cathode ray tube (CRT) May. 24, 2005
6897901 Circuit for combining AKB and selective beam current limiting and projection television system utilizing same May. 24, 2005
6888575 Digital cut-off control loop for TV using speeding and blanking circuits May. 3, 2005
6870576 Automatic beam limiter circuit Mar. 22, 2005
6686710 Circuit and method for regulating current using autobias Feb. 3, 2004
6563276 CRT display apparatus May. 13, 2003
6563496 Cut-off adjusting apparatus May. 13, 2003
6556254 Black and white level stabilization Apr. 29, 2003
6549246 Method for driving projection cathode ray tube Apr. 15, 2003
6541927 Color cathode ray tube and adjusting method Apr. 1, 2003
6433827 Measurement-free G2 calibration of color picture tubes Aug. 13, 2002
6369527 Vertical blanking circuit and bias clamp boost supply Apr. 9, 2002
6313878 Method and structure for providing an automatic hardware-implemented screen-saver function to a display product Nov. 6, 2001
6288503 Compensation of picture tube ageing effects Sep. 11, 2001
6288690 Video control circuit for a video display device Sep. 11, 2001
6285401 Apparatus for suppressing overshoots in kinescope beam current measurement pulses Sep. 4, 2001
6226037 AKB interface circuit for kine driver IC May. 1, 2001
6211908 Television apparatus with supplementary kinescope blanking and spot burn protection circuitry Apr. 3, 2001
6211629 Cut-off level setting Apr. 3, 2001
6097445 White balance self-adjusting apparatus for use in color display Aug. 1, 2000
6069660 Automatic black level stabilizing apparatus May. 30, 2000
5994841 Circuit for biasing display device by compensating for a varying leakage current Nov. 30, 1999
5969762 Video signal driver including a cascode transistor Oct. 19, 1999
5920351 Black level detecting circuit of video signal Jul. 6, 1999
5894327 Video display system with AKB responsive screen grid supply Apr. 13, 1999
5892337 Black level setting Apr. 6, 1999
5835161 Kinescope driver apparatus with gamma correction coupled with feedback cathode current sensor Nov. 10, 1998
5726540 Transient enhancement circuit for CRT amplifier Mar. 10, 1998
5589883 Cathode ray tube display Dec. 31, 1996
5488417 Automatic kinescope bias control system Jan. 30, 1996

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