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:
Jun. 18, 2002
Filed:
Oct. 29, 1996
Shigeo Hayashi, Toubu-machi, JP;
Makoto Shiobara, Nagaoka, JP;
Totoku Electric Co., Ltd., Tokyo, JP;
Abstract
A method of attenuating an unwanted electric field radiation caused by electrostatic induction on an internal conductive coating of a cathode ray tube by a pulse voltage generated by a deflection circuit is provided. A reverse pulse voltage, which is reverse in polarity to the pulse voltage of the deflection circuit, is impressed on an external conductive coating of the cathode ray tube and electrostatic induction induces a pulse voltage on the internal conductive coating which is reverse in polarity to a pulse voltage of the deflection yoke induce on the internal conductive coating through an electrostatic capacitance existing between the internal conductive coating and the external conductive coating so that an unwanted electric field radiation from the front screen of a cathode ray tube is attenuated.