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:
Jan. 04, 2000
Filed:
Dec. 04, 1997
Seung-Taek Lee, Suwon-si, KR;
SamSung Electronics Co., Ltd., Suwon, KR;
Abstract
An upper and lower distortion correcting circuit by modes in a display device which displays a video signal as a visible image, includes: a parabolic generator for receiving a vertical pulse to generate a parabolic wave in accordance with the received vertical pulse; a multivibrator for s receiving a horizontal pulse outputted from a microcomputer and for triggering the horizontal pulse in accordance with a horizontal balance signal outputted from a digital to analog converter to adjust and output a triggered horizontal pulse having a controlled duty cycle; a multiplier for multiplying the horizontal pulse outputted from the multivibrator and the parabolic wave outputted from the parabolic generator to thereby output a correction current; a buffer for stabilizing and outputting a gain of the correction current outputted from the multiplier; an amplifying portion for receiving and amplifying the gain of the correction current outputted from the buffer; and a modulation portion for receiving the correction current outputted from the amplifying portion and the vertical pulse and for superimposing the correction current and the vertical pulse to generate a combined correction wave.