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Class Information
Number: 348/380
Name: Television > Cathode-ray tube display beam current control
Description: Subject matter including a device to regulate or limit the brightness of the displayed image.

Sub-classes under this class:

Class Number Class Name Patents
348/381 With beam energy determining color 11

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
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
7746396 Imaging device and method of creating image file Jun. 29, 2010
7573389 Radio-frequency identification tag communication device Aug. 11, 2009
7471344 Display apparatus periodically modulating image-signal characteristics Dec. 30, 2008
7286175 Bias control circuitry for cathode ray tube beam currents Oct. 23, 2007
7030908 Method and circuit for spot-killer control in cathode-ray tube Apr. 18, 2006
6998782 Circuit for generating a process-independent current Feb. 14, 2006
6989639 Television image receiving apparatus and CRT display apparatus Jan. 24, 2006
6972805 Display of a video signal by means of a line scan Dec. 6, 2005
6970203 Automatic cut-off system Nov. 29, 2005
6937288 Beam current limiting circuit for use in a video projector Aug. 30, 2005
6904151 Method for the estimation and recovering of general affine transform Jun. 7, 2005
6897901 Circuit for combining AKB and selective beam current limiting and projection television system utilizing same May. 24, 2005
6897900 Display apparatus comprising a cathode ray tube (CRT) May. 24, 2005
6891564 Cutoff control with on screen display circuit for adjusting white balance May. 10, 2005
6888575 Digital cut-off control loop for TV using speeding and blanking circuits May. 3, 2005
6885531 Over-current protection circuit Apr. 26, 2005
6870575 Screen-noise eliminating apparatus and cathode-ray tube display apparatus Mar. 22, 2005
6806908 Cathode current limiting circuit for projection television display systems Oct. 19, 2004
6771023 System and method for regulating cathode ray tube beam current using autobias Aug. 3, 2004
6686710 Circuit and method for regulating current using autobias Feb. 3, 2004
6664725 CRT electron gun with a plurality of electrodes Dec. 16, 2003
6636265 Focus flutter prevention in TV receivers and monitors Oct. 21, 2003
6614482 Video output stage with self-regulating beam current limiting Sep. 2, 2003
6563552 Image correcting method and device and cathode ray tube display unit May. 13, 2003
6563276 CRT display apparatus May. 13, 2003
6556254 Black and white level stabilization Apr. 29, 2003
6552752 Clock generating based on a reference signal included in the digital input data of a digital broadcasting receiver Apr. 22, 2003
6549246 Method for driving projection cathode ray tube Apr. 15, 2003
6545717 Display system having selectable automatic CRT cutoff stabilization or AKB with CRT feedback current simulation Apr. 8, 2003
6538398 Cathode ray tube driver circuit with cathode current detection Mar. 25, 2003
6489994 Method and device for protecting a cathode ray tube in an image displaying device by using a brightness control circuit Dec. 3, 2002
6486900 System and method for a video display screen saver Nov. 26, 2002
6483557 Emission control in a video display Nov. 19, 2002
6313878 Method and structure for providing an automatic hardware-implemented screen-saver function to a display product Nov. 6, 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
6204882 .gamma. matching of a video processor by means of three measured currents Mar. 20, 2001
6195134 Horizontal electron-beam deflector, automatic frequency controller, and video signal receiver Feb. 27, 2001
6188435 Circuit for controlling beam current in a picture tube Feb. 13, 2001
6169587 Raster V-size adjustment circuit Jan. 2, 2001
6097445 White balance self-adjusting apparatus for use in color display Aug. 1, 2000
6072546 Apparatus for and method of measuring focus Jun. 6, 2000
6064434 Beam current measurement May. 16, 2000
6040664 Circuit for limiting the beam current of a cathode ray tube Mar. 21, 2000
6034729 Monitor protection system Mar. 7, 2000
6008842 Protective circuit for the CRT and lens Dec. 28, 1999
5977711 Method and system for optimizing cathode output for aging a cathode ray tube during manufacture Nov. 2, 1999
5894327 Video display system with AKB responsive screen grid supply Apr. 13, 1999
5892544 Beam current detection and control system for a cathode ray tube Apr. 6, 1999

1 2 3

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