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1. 发明申请

US20090323033A1 DISCHARGE LAMP LIGHTING DEVICE AND IMAGE DISPLAY DEVICE 有权
标题翻译：放电灯照明装置和图像显示装置
公开(公告)号：US20090323033A1
公开(公告)日：2009-12-31
申请号：US12096088
申请日：2006-12-21
申请人： Hirofumi Konishi , Jyunichi Uekariya
发明人： Hirofumi Konishi , Jyunichi Uekariya
IPC分类号： H05B41/36 , G03B21/14
CPC分类号： H05B41/2882 , G03B21/2026 , H02M3/157 , H05B41/2885 , Y02B20/202
摘要： An output of a load voltage detector is read by an A/D converter, and a reference value Is and a switching frequency are decided by a microcomputer. In order that the decided switching frequency can be achieved, a SET signal is inputted from a switching frequency counting unit to a drive controller, and a switching element is turned on. When a current flowing through the switching element, which is detected by a resistor, exceeds the reference value Is of a reference arithmetic unit, a RESET signal is inputted from a current detector to the drive controller, and the switching element is turned off. Thereafter, the reference value Is and the switching frequency are set so that the switching element can be turned on at the next time at timing when a regenerative current of a diode turns to substantial zero. As described above, the switching frequency is controlled in response to a state of a discharge lamp while controlling the switching element to turn on at the timing when the regenerative current turns to substantial zero without bringing up a cost increase of a discharge lamp lighting device.
摘要翻译：负载电压检测器的输出由A / D转换器读取，基准值Is和开关频率由微型计算机决定。为了可以实现确定的开关频率，将SET信号从开关频率计数单元输入到驱动控制器，并且开关元件导通。当通过电阻器检测到的开关元件的电流超过参考运算单元的基准值Is时，从电流检测器向驱动控制器输入RESET信号，并切换开关元件。此后，设定基准值Is和开关频率，使得开关元件可以在二极管的再生电流变为大致零的定时下一次接通。如上所述，在不增加放电灯点亮装置的成本增加的同时，在再生电流变为大致零的时刻，控制开关元件导通的同时，响应于放电灯的状态来控制开关频率。

2. 发明授权

US07943890B2 Discharge lamp lighting device and image display device with switching frequency 有权
标题翻译：放电灯照明装置和具有开关频率的图像显示装置
公开(公告)号：US07943890B2
公开(公告)日：2011-05-17
申请号：US12096088
申请日：2006-12-21
申请人： Hirofumi Konishi , Jyunichi Uekariya
发明人： Hirofumi Konishi , Jyunichi Uekariya
IPC分类号： G01J1/32 , H03K17/78 , G03B21/20
CPC分类号： H05B41/2882 , G03B21/2026 , H02M3/157 , H05B41/2885 , Y02B20/202
摘要： An output of a load voltage detector is read by an A/D converter, and a reference value Is and a switching frequency are decided by a microcomputer. In order that the decided switching frequency can be achieved, a SET signal is inputted from a switching frequency counting unit to a drive controller, and a switching element is turned on. When a current flowing through the switching element, which is detected by a resistor, exceeds the reference value Is of a reference arithmetic unit, a RESET signal is inputted from a current detector to the drive controller, and the switching element is turned off. Thereafter, the reference value Is and the switching frequency are set so that the switching element can be turned on at the next time at timing when a regenerative current of a diode turns to substantial zero. As described above, the switching frequency is controlled in response to a state of a discharge lamp while controlling the switching element to turn on at the timing when the regenerative current turns to substantial zero without bringing up a cost increase of a discharge lamp lighting device.
摘要翻译：负载电压检测器的输出由A / D转换器读取，基准值Is和开关频率由微型计算机决定。为了可以实现确定的开关频率，将SET信号从开关频率计数单元输入到驱动控制器，并且开关元件导通。当通过电阻器检测到的开关元件的电流超过参考运算单元的基准值Is时，从电流检测器向驱动控制器输入RESET信号，并切换开关元件。此后，设定基准值Is和开关频率，使得开关元件可以在二极管的再生电流变为大致零的定时下一次接通。如上所述，在不增加放电灯点亮装置的成本增加的同时，在再生电流变为大致零的时刻，控制开关元件导通的同时，响应于放电灯的状态来控制开关频率。

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