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Class Information
Number: 315/8
Name: Electric lamp and discharge devices: systems > Cathode ray tube circuits > Compensating for stray deflecting fields
Description: Subject matter wherein the system is provided with means, or where there is shielding means for part of the system to prevent stray electromagnetic fields from deflecting the cathode-ray from the desired path.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7436120 |
Compensation of magnetic fields |
Oct. 14, 2008 |
| RE39962 |
Method and apparatus for controlling power consumption in a tilt correcting coil |
Dec. 25, 2007 |
| 7269749 |
System for controlling low power mode of TV by using single output pin of microprocessor to send signals to demagnetization circuit and switched mode power supply |
Sep. 11, 2007 |
| 7183713 |
Auxiliary coil driver circuit for a cathode ray tube |
Feb. 27, 2007 |
| 7145761 |
Degaussing coil holder |
Dec. 5, 2006 |
| 7012360 |
Cathode ray tube apparatus having velocity modulation coil |
Mar. 14, 2006 |
| 6987362 |
CRT display apparatus and control method thereof |
Jan. 17, 2006 |
| 6963163 |
Color cathode ray tube having DC magnetic field during degaussing process |
Nov. 8, 2005 |
| 6914384 |
Degaussing circuit for CRT monitor |
Jul. 5, 2005 |
| 6831415 |
Circuit and method of controlling vertical and horizontal screen sizes of cathode ray tube monitor |
Dec. 14, 2004 |
| 6791249 |
Cathode ray tube |
Sep. 14, 2004 |
| 6686695 |
Cathode ray tube having degaussing coil for minimizing variations in landing of electron beam |
Feb. 3, 2004 |
| 6680757 |
Environmental magnetism compensating device and cathode-ray tube display device |
Jan. 20, 2004 |
| 6654224 |
Degaussing circuit |
Nov. 25, 2003 |
| 6635994 |
Method and apparatus for demagnetizing color CRT |
Oct. 21, 2003 |
| 6630791 |
Cathode ray tube device that reduces magnetic field leakage |
Oct. 7, 2003 |
| 6625012 |
Degaussing coil fixing holder for a monitor |
Sep. 23, 2003 |
| 6501223 |
Device and method for demagnetizing the shielding of a color display device |
Dec. 31, 2002 |
| 6501222 |
Apparatus for automatically correcting for earth magnetic field effects on a monitor |
Dec. 31, 2002 |
| 6452321 |
Deflection device for a cathode ray tube having a correction coil with a non-circular shape |
Sep. 17, 2002 |
| 6407517 |
Method of attenuating unwanted electric field radiation and a cathode ray tube display |
Jun. 18, 2002 |
| 6404133 |
Cathode ray tube device that reduces magnetic field leakage |
Jun. 11, 2002 |
| 6288757 |
Apparatus and method for correcting convergence of television |
Sep. 11, 2001 |
| 6246448 |
Purity adjustment device for video display appliance |
Jun. 12, 2001 |
| 6232775 |
Magneto-impedance element, and azimuth sensor, autocanceler and magnetic head using the same |
May. 15, 2001 |
| 6194848 |
Automatic magnetic field compensator for a CRT |
Feb. 27, 2001 |
| 6169587 |
Raster V-size adjustment circuit |
Jan. 2, 2001 |
| 6147454 |
Display unit with reduced leakage magnetic field |
Nov. 14, 2000 |
| 6141627 |
Method and apparatus for controlling power consumption in a tilt correcting coil |
Oct. 31, 2000 |
| 6130505 |
Automatic alignment of cathode ray tube video displays in local magnetic fields |
Oct. 10, 2000 |
| 6107743 |
Method and apparatus for correcting image errors caused by residual magnetism in a picture tube |
Aug. 22, 2000 |
| 6097355 |
Purity/beam landing error measurement method for electronic display devices |
Aug. 1, 2000 |
| 6097163 |
Electron beam deflection apparatus using an auxiliary deflection coil and a compensation coil |
Aug. 1, 2000 |
| 6091198 |
Demagnetization circuit for cathode-ray tube video device |
Jul. 18, 2000 |
| 6049173 |
Apparatus for suppressing electric field radiation from a cathode ray tube |
Apr. 11, 2000 |
| 6037716 |
Degaussing circuit with a PTC thermistor |
Mar. 14, 2000 |
| 5998943 |
External magnetic field correction device and CRT display device |
Dec. 7, 1999 |
| 5990623 |
Method for controlling degaussing coil of cathode ray tube |
Nov. 23, 1999 |
| 5986406 |
Electric field noise eliminating circuit in a video display appliance |
Nov. 16, 1999 |
| 5969775 |
Video display appliance including a device for eliminating electric field emitted from a cathode ray tube |
Oct. 19, 1999 |
| 5965987 |
Apparatus for suppressing electric field radiation from a cathode ray tube |
Oct. 12, 1999 |
| 5962978 |
Apparatus for automatically degaussing a color picture tube in response to a power conservation mode |
Oct. 5, 1999 |
| 5953081 |
Complementing circuit for tilt of picture in a display device |
Sep. 14, 1999 |
| 5952787 |
Degaussing circuit employing filter for improved performance |
Sep. 14, 1999 |
| 5952786 |
Auto deguassing from stand-by to on |
Sep. 14, 1999 |
| 5940261 |
Circuit and method independent of frequency and voltage deviations of supply voltage, and display apparatus incorporating same circuit |
Aug. 17, 1999 |
| 5914567 |
CRT display apparatus, field radiation restriction circuit and field radiation restriction electrode |
Jun. 22, 1999 |
| 5874879 |
Leakage flux canceling device |
Feb. 23, 1999 |
| 5847511 |
Automatic image rotation compensation circuit and method |
Dec. 8, 1998 |
| 5841234 |
Device for shielding electric field emitted backward from video display appliance |
Nov. 24, 1998 |
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