发明授权
US08089214B2 Driving method and driving device for discharge lamp, light source device, and image display device
有权
放电灯，光源装置和图像显示装置的驱动方法和驱动装置
- 专利标题： Driving method and driving device for discharge lamp, light source device, and image display device
- 专利标题（中）： 放电灯，光源装置和图像显示装置的驱动方法和驱动装置
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申请号： US12389648申请日： 2009-02-20
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公开(公告)号： US08089214B2公开(公告)日： 2012-01-03
- 发明人: Tetsuo Terashima , Kentaro Yamauchi , Takeshi Takezawa , Kazuo Okawa
- 申请人： Tetsuo Terashima , Kentaro Yamauchi , Takeshi Takezawa , Kazuo Okawa
- 申请人地址： JP Tokyo
- 专利权人： Seiko Epson Corporation
- 当前专利权人： Seiko Epson Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： AdvantEdge Law Group, LLC
- 优先权： JP2008-039910 20080221
- 主分类号： H05B41/36
- IPC分类号： H05B41/36 ; H05B41/24
摘要：
A driving method for a discharge lamp that lights by performing discharge between two electrodes while alternately switching a polarity of a voltage applied between the two electrodes includes: modulating an anode duty ratio, which is a ratio of an anode time for which one of the electrodes operates as an anode in one period of the polarity switching, within a predetermined range; and changing the predetermined range to make a maximum value of the modulated anode duty ratio higher than a maximum value of an initial anode duty ratio of the discharge lamp when a predetermined condition is satisfied.