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Class Information
Number: 315/371
Name: Electric lamp and discharge devices: systems > Cathode ray tube circuits > Cathode-ray deflections circuits > With ray deflection distortion correction or reduction > By modulation of deflection waveform
Description: Subject matter wherein the electrical circuit includes a source of a deflection waveform which is delivered to the deflection means and the electrical network delivers another waveform or signal to the electrical circuit or the deflection means to modulate the deflection waveform so that a composite waveform is delivered to the deflection means to correct or diminish some type of distortion received by the energized electrical circuit, deflection means, or the cathode-ray tube.

Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
7880818 Device and method for correcting kinescope scan distortion Feb. 1, 2011
7777432 Horizontal and vertical dynamic correction in CRT monitors Aug. 17, 2010
7768217 Circuit and method for reducing east-west geometry mismatch between the top and bottom of a raster display Aug. 3, 2010
7462838 Electrostatic deflection control circuit and method of electronic beam measuring apparatus Dec. 9, 2008
RE39962 Method and apparatus for controlling power consumption in a tilt correcting coil Dec. 25, 2007
7233118 Line deflection circuit for a television receiver Jun. 19, 2007
7202488 Correction system, method of correcting deflection distortion, program and method for manufacturing a semiconductor device Apr. 10, 2007
7187371 Display apparatus Mar. 6, 2007
7170239 Circuit and method for reducing east-west geometry mismatch between the top and bottom of a raster display Jan. 30, 2007
7166972 Vertical deflection apparatus Jan. 23, 2007
7098613 High voltage deflection circuit Aug. 29, 2006
7061192 Switching-type vertical deflection output circuit Jun. 13, 2006
7062242 Dynamic path gain compensation for radios in wireless communication systems Jun. 13, 2006
6972805 Display of a video signal by means of a line scan Dec. 6, 2005
6894731 Raster distortion correction arrangement May. 17, 2005
6847176 Apparatus and method for removing horizontal moire in cathode-ray tube monitors Jan. 25, 2005
6836084 Horizontal deflection coil for deflection yoke Dec. 28, 2004
6831427 Vertical deflection apparatus Dec. 14, 2004
6828741 Deflecting yoke apparatus and television receiver Dec. 7, 2004
6774585 Display correction waveform generator for multiple scanning frequencies Aug. 10, 2004
6717377 Circuit and method for reducing east-west geometry mismatch between the top and bottom of a raster display Apr. 6, 2004
6700336 Apparatus for supplying deflection power for use in a display and control method thereof Mar. 2, 2004
6690125 CRT scan circuit with a geometry correction independent from the scan frequency Feb. 10, 2004
6683424 Distortion correcting circuit and display device Jan. 27, 2004
6674253 Scan velocity modulation technique Jan. 6, 2004
6667588 Multi standard television display Dec. 23, 2003
6642676 Electromagnetic quadrupole circuit which independently corrects ac and dc components of correction current Nov. 4, 2003
6590620 CRT display image horizontal distortion correction device Jul. 8, 2003
6580232 Dynamic focus voltage amplitude controller Jun. 17, 2003
6580233 Cathode ray tube and intensity controlling method Jun. 17, 2003
6555976 East-west distortion correction Apr. 29, 2003
6534920 Horizontal deflection circuit and bidirectional horizontal deflection apparatus Mar. 18, 2003
6522091 Circuit and method that allows the amplitudes of vertical correction signal components to be adjusted independently Feb. 18, 2003
6504326 Focusing circuit for a cathode ray tube Jan. 7, 2003
6495977 Vertical deflection circuit, processor for vertical deflection, and CRT display Dec. 17, 2002
6495975 CRT display apparatus Dec. 17, 2002
6489735 Generating a non-linear waveform Dec. 3, 2002
6486622 Color display device with a deflection-dependent distance between outer beams Nov. 26, 2002
6483558 Color television receiver or color monitor having a flat screen Nov. 19, 2002
6479953 Deflection circuit with a retrace capacitive transformation Nov. 12, 2002
6472833 Laser cathode ray tube Oct. 29, 2002
6462488 Shadowmaskless tracking cathode ray tube control circuit having inverse beam current compensation Oct. 8, 2002
6456020 Circuit for stabilizing a screen voltage of a video display apparatus Sep. 24, 2002
6452347 Method and apparatus for deflection Sep. 17, 2002
6437523 Deflection circuits coupled via a filter Aug. 20, 2002
6424103 Deflection-distortion correcting circuit Jul. 23, 2002
6417633 Tracking cathode ray tube circuit having a modulator demodulator Jul. 9, 2002
6417632 Deflection apparatus and control method thereof Jul. 9, 2002
6407519 Cathode-ray tube system capable of providing beam spots of a small diameter Jun. 18, 2002
6404148 Switching apparatus for horizontal driving pulse Jun. 11, 2002

1 2 3 4 5 6 7 8

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