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AssigneesHitachi, Ltd., Hitachi Mizusawa Electronics Co., Ltd.
InventorsNobutaka Okuyama, Soichi Sakurai, Kouji Kitou, Hiroki Oguro, Isao Yoshimi, Masao Obara, Michitaka Ohsawa, Kouji Fukuma, Kazuo Majima, Yoshio Yoshiwara, Minoru Furuya
Estimating the term…
A cathode-ray tube apparatus capable of reducing a high frequency electric field radiated from the deflection yoke and the deflection and high voltage circuit to the outside of the cathode-ray tube apparatus. Mounted on the deflection yoke or on the cathode-ray tube are an induction coil for generating a pulse voltage opposite in polarity to a high pulse voltage applied to the h and an electric field cancellation electrode made of a conductive wire to which the opposite polarity pulse voltage is applied. When the opposite polarity pulse voltage is applied to the electric field cancellation electrode, the electric field cancellation electrode radiates an electric field opposite in polarity to the high frequency electric field radiated from the deflection yoke to the outside of the cathode-ray tube apparatus to reduce the intensity of the high frequency electric field.
A cathode-ray tube apparatus comprising an electrically grounded outer coating of carbon on a funnel portion of a cathode-ray tube, and at least one electric field cancellation electrode formed on the cathode-ray tube by disconnecting a part of the carbon on the funnel portion of the cathode-ray tube.
A cathode-ray tube apparatus for mounting a deflection yoke on a cathode-ray tube having an electrically grounded outer coating of carbon on a funnel portion of the cathode-ray tube, and at least one electric field cancellation electrode formed on the cathode-ray tube by disconnecting a part of the carbon on the funnel portion of the cathode-ray tube, and an induction coil magnetically connected with a magnetic field generated by a horizontal deflection coil, said electric field cancellation electrode being connected to one end of said induction coil.
A cathode-ray tube apparatus for mounting a deflection yoke on a cathode-ray tube having an electrically grounded outer coating of carbon on a funnel portion of the cathode-ray tube, at least one electric field cancellation electrode formed on the cathode-ray tube by disconnecting a part of the carbon on the funnel portion of the cathode-ray tube, said electric field cancellation electrode being connected to a flyback transformer with an induction coil separated from other windings for obtaining a pulse voltage having an opposite polarity to a pulse voltage of said deflection yoke of a horizontal deflection coil.
Dependencies are inferred from the claim text.