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    • 2. 发明授权
    • Liquid crystal television and backlight unit
    • 液晶电视和背光单元
    • US08125575B2
    • 2012-02-28
    • US12079655
    • 2008-03-28
    • Hitoshi Miyamoto
    • Hitoshi Miyamoto
    • H04N3/14G09G3/36
    • H05B41/2822Y02B20/185
    • A liquid crystal television 100 displays an image on a liquid crystal display by transmitting a light source from a backlight unit 10. The backlight unit 10 drives two cold-cathode tubes 13a, 13b as the backlight 13 at the high frequency voltages each with different polarity generated by a self-excited inverter circuit 11 to generate a light source. The backlight unit 10 connects an inter-lamp coil L2 between two U-shaped cold-cathode tubes 13a, 13b to form a series circuit, and further connects capacitors C5, C6 in parallel with the cold-cathode tubes 13a, 13b.
    • 液晶电视100通过从背光单元10透射光源来在液晶显示器上显示图像。背光单元10以不同极性的高频电压驱动作为背光13的两个冷阴极管13a,13b 由自激逆变器电路11产生,以产生光源。 背光单元10将两个U形冷阴极管13a,13b之间的灯间线圈L2连接以形成串联电路,并且还与冷阴极管13a,13b平行地连接电容器C5,C6。
    • 3. 发明授权
    • Voltage for LCD
    • LCD电压
    • US07638905B2
    • 2009-12-29
    • US11827253
    • 2007-07-11
    • Hitoshi Miyamoto
    • Hitoshi Miyamoto
    • G01R1/20G06F3/038
    • H04N5/63
    • A circuit that can avoid drops in power supply and heat generation and save on manufacturing costs with no need of external controls are configured such that: a switching transformer has a terminal that produces an output of 22V at power-on and an output of 8V during standby and a terminal that produces an output of 10V at power-on and an output of 3V during standby; the output of 22V or 8V is lowered to 5V by a regulator IC1 and applied (input) to a regulator IC2; an input of 10V or 3V is produced at the regulator IC2; at power-on, the regulator IC2 lowers 10V to 3.3V and supplies the lowered 3.3V to the inverter circuit 10f; and during standby, a regulator IC lowers 8V to 3.3V and supplies the lowered 3.3V to the inverter circuit 10f.
    • 能够避免电力供应和发热降低并且不需要外部控制而节省制造成本的电路被配置为:开关变压器具有在上电时产生22V输出的端子,并且在8V期间输出8V 待机和终端在上电时产生10V输出,待机时输出3V; 22V或8V的输出由调节器IC1降低到5V,并施加(输入)到调节器IC2; 调节器IC2产生10V或3V的输入; 在上电时,调节器IC2降低10V至3.3V,并将降低的3.3V提供给逆变器电路10f; 并且在待机期间,调节​​器IC降低8V至3.3V,并将降低的3.3V提供给逆变器电路10f。
    • 10. 发明授权
    • Synchronous rectifier circuit capable of preventing flow-through current
    • 同步整流电路能够防止流通电流
    • US08284573B2
    • 2012-10-09
    • US12690399
    • 2010-01-20
    • Hitoshi MiyamotoTakashi Jinnouchi
    • Hitoshi MiyamotoTakashi Jinnouchi
    • H02M3/335
    • H02M3/33592H02M1/38Y02B70/1475
    • A synchronous rectifier circuit (DC-DC converter) includes a CR integration circuit and a discharge circuit. The CR integration circuit outputs a voltage that varies at delayed timing as compared with a voltage induced in a secondary-side main winding. The discharge circuit discharges a gate voltage of a rectifier transistor as a result of conduction of a discharge transistor in response to the output voltage from the CR integration circuit. According to such a configuration, the rectifier transistor is turned off earlier than the timing of switching of polarity of voltages induced in the secondary-side main winding and a secondary-side auxiliary winding in response to turn-on of a primary-side transistor.
    • 同步整流电路(DC-DC转换器)包括CR积分电路和放电电路。 CR积分电路输出与在次级侧主绕组中感应的电压相比在延迟定时变化的电压。 由于放电晶体管响应于来自CR积分电路的输出电压而导通,所以放电电路对整流器晶体管的栅极电压进行放电。 根据这样的结构,整流晶体管响应于初级侧晶体管的导通而比次级侧主绕组和次级侧辅助绕组中感应的电压的极性切换的时刻更早地关断。