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:
Feb. 03, 1998
Filed:
Jan. 22, 1997
Joo-Hyoung Lee, Suwon, KR;
SamSung Electronics Co., Ltd., Suwon, KR;
Abstract
A circuit for adjusting a horizontal retrace time and limiting a pulse peak in a display device includes a microcomputer for receiving a horizontal synchronous frequency and converting the horizontal synchronous frequency into a first voltage. A pulse generator compares the first voltage provided from the microcomputer with a triangular waveform to adjust a width of a retrace time adjusting pulse. A transformer receives an output voltage from the pulse generator to generate an induced voltage. A switching unit performs a switching operation in accordance with a magnitude of the induced voltage provided from the transformer. A clamping unit clamps the induced voltage provided from the transformer to limit a voltage peak value. A charging/discharging unit performs charging and discharging operations according to an output of the switching unit. A feedback unit rectifies, smoothes and divides the induced voltage at a secondary side of the transformer to generate a rectified, smoothed and divided voltage, and feeds the rectified, smoothed and divided voltage back to the pulse generator.
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