Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Electron or ion beam deflecting type
Patent
1997-12-18
1999-03-09
Luebke, Renee S.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Electron or ion beam deflecting type
335210, 313440, H01H 100
Patent
active
058806601
ABSTRACT:
A cathode ray tube apparatus comprising: a deflection yoke comprising a horizontal deflection coil that forms the pin cushion distortion as a whole; a vertical deflection coil that forms the barrel distortion as a whole: a resin frame provided around the periphery of the horizontal deflection coil, which insulates and fastens the horizontal deflection coil and the vertical deflection coil; and a ferrite core provided around the periphery of the vertical deflection coil to strengthen the magnetic flux and the length of part of cone portion of the horizontal deflection coil at the side of the screen whose winding angle is not less than 0 degree nor more than 30 degree with respect to the reference line is 25 mm or longer as measured from the reference line. This cathode ray tube apparatus can correct the pin cushion distortion of raster in the upper-and-lower side of the picture for flattened and increased deflection angle cathode ray tubes with the deflection yoke itself.
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Honda Masanobu
Iwasaki Katsuyo
Taniwa Kenichiro
Luebke Renee S.
Matsushita Electronics Corporation
Nguyen Tuyen T.
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