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:
Apr. 16, 2002
Filed:
Nov. 01, 2000
Yoshinori Miyamoto, Tokyo, JP;
Hironobu Yasui, Tokyo, JP;
Akinori Heishi, Tokyo, JP;
Akira Ishimori, Tokyo, JP;
Hiroaki Nishino, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An image distortion correcting device with reduced cost and reduced consumption power is provided. Horizontal correction coils (L ) and (L ) are wound around partial cores ( ) and ( ). The two horizontal correction coils (L ) and (L ) are wound in such winding directions that they produce magnetic fields in opposite directions. A bobbin ( ) having an insulating property covers the partial cores ( ) and ( ) and magnets ( ) and ( ) in the winding direction of the horizontal correction coils (L ) and (L ), and a vertical correction coil (L ) is wound on the bobbin ( ) around the partial cores ( ) and ( ) along the windings of the horizontal correction coils (L ) and (L ). That is to say, the vertical correction coil (L ) is wound over the horizontal correction coils (L ) and (L ) along the periphery of their windings with the bobbin ( ) interposed therebetween. This vertical correction coil (L ) is wound in such a direction that it produces a magnetic field directed to cancel the bias magnetic field produced by the magnets ( ) and ( ).