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:
Mar. 14, 2006
Filed:
Jul. 07, 2004
Jong-yang Choo, Gyeonggi-do, KR;
Jong-yang Choo, Gyeonggi-do, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An apparatus and method of controlling the driving of a heat source using an AC voltage. If the temperature of the heat source is lower than a reference temperature and the level of the AC voltage is greater than a reference level, the level of a sensing signal is changed. Then, it is determined whether a predetermined period of time has lapsed from the moment when the level of the sensing signal has been changed. Thereafter, if it is determined that the predetermined period of time has lapsed from the moment when the level of the sensing signal has been changed, the heat source is driven when the level of the AC voltage is a zero level. Accordingly, if the frequency of a received AC voltage is not fixed to a specific frequency, but varies, or if the driving control signal is delayed and generated while the AC voltage has a constant frequency, the driving control signal is generated after the lapse of a predetermined period of time after the level of a sensing signal is transited from a high logic level to a low logic level. Thus, an AC voltage is supplied to a heat source at a regular duty cycle, thereby stably controlling the heat source and preventing occurrence of flickering.