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:
Jul. 04, 1995
Filed:
Feb. 24, 1993
Masao Yamazaki, Fujisawa, JP;
Tsutomu Kitamura, Tokyo, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
In a vertical deflection circuit of a display monitor including a vertical deflection coil 41 and a sigmoid correction capacitor 42 connected to the vertical deflection coil 41, a series connection circuit consisting of a resistor 21 and a switch 22 connected in series with each other is connected in parallel with the sigmoid correction capacitor 42. By turning the switch 22 on and off in response to a control signal having a period twice as long as a period of the vertical synchronizing signal, a current flowing through the resistor 21 and the switch 22 is periodically added to a vertical deflection current, thereby causing shift of displaying points on a screen to make the moire phenomenon unnoticeable.