Title:
パルス幅変調により電気光源を制御する方法
Document Type and Number:
Japanese Patent JP2008512005
Kind Code:
A
Abstract:
Disclosed is for controlling a light source by pulse width modulation of a supply voltage. The supply voltage, or a parameter dependent thereon, is measured and the pulse width is controlled as function of the measured value. The supply voltage or parameter is measured at least twice during the pulse and may be cyclically measured. The pulse width of the current or a subsequent pulse is matched to the recorded value of the supply voltage or the parameter. A total value is generated from all of the measured values and compared with a given value and the pulse width of subsequent pulses are matched as function of the difference between the total value and the given value.
Inventors:
Yose, Uri
Huos, Cristian
Joseph, Joseph
Tvuitsk, Jochen
Huos, Cristian
Joseph, Joseph
Tvuitsk, Jochen
Application Number:
JP2007532754A
Publication Date:
April 17, 2008
Filing Date:
July 14, 2005
Export Citation:
Assignee:
Conti Temic microelectronic GmbH
International Classes:
H01L33/00; H05B39/04; H05B44/00
Domestic Patent References:
| JP2001308973A | 2001-11-02 | |||
| JP2000004048A | 2000-01-07 | |||
| JPH1078765A | 1998-03-24 | |||
| JPH10111487A | 1998-04-28 | |||
| JP2003338396A | 2003-11-28 | |||
| JP2004039289A | 2004-02-05 |
Foreign References:
| WO2003032689A1 | 2003-04-17 |
Attorney, Agent or Firm:
Osamu Nakahira