The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 1995
Filed:
Mar. 05, 1993
Nobutaka Okuyama, Yokohama, JP;
Soichi Sakurai, Yokohama, JP;
Kouji Kitou, Yokohama, JP;
Hiroki Oguro, Yokohama, JP;
Isao Yoshimi, Mobara, JP;
Masao Obara, Yokohama, JP;
Michitaka Ohsawa, Fujisawa, JP;
Kouji Fukuma, Yokohama, JP;
Kazuo Majima, Mobara, JP;
Yoshio Yoshiwara, Mobara, JP;
Minoru Furuya, Esashi, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Mizusawa Electronics Co., Ltd., Iwate, JP;
Abstract
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.