发明授权
- 专利标题： Pulse width modulation signal generating device, image display apparatus including pulse width modulation signal generating device, and pulse width modulation signal generating method
- 专利标题（中）： 脉宽调制信号发生装置，包括脉宽调制信号发生装置的图像显示装置和脉宽调制信号产生方法
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申请号： US12466765申请日： 2009-05-15
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公开(公告)号： US08058633B2公开(公告)日： 2011-11-15
- 发明人: Tomio Ikegami
- 申请人： Tomio Ikegami
- 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： Oliff & Berridge PLC
- 优先权： JP2008-157854 20080617
- 主分类号： G02B26/10
- IPC分类号： G02B26/10 ; H04N1/047
摘要：
A pulse width modulation signal generating device which generates a pulse width modulation signal for modulating laser beam according to image data includes: a cycle signal output circuit which outputs a cycle signal having a cycle corresponding to a drawing rate for drawing the image data by the laser beam; and a pulse width modulation circuit which receives supply of the image data and the cycle signal and modulates a pulse wave having a cycle determined by the cycle signal by changing duty ratio of the pulse wave based on the image data to produce the pulse width modulation signal.
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