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1. 发明申请

US20130038229A1 LIGHT-EMITTING DEVICE CONTROL CIRCUIT 有权
标题翻译：发光装置控制电路
公开(公告)号：US20130038229A1
公开(公告)日：2013-02-14
申请号：US13569945
申请日：2012-08-08
申请人： Hiroyuki KOJIMA , Noriaki Okada , Kazuhiko Saito , Shuhei Kawai , Feng Xu
发明人： Hiroyuki KOJIMA , Noriaki Okada , Kazuhiko Saito , Shuhei Kawai , Feng Xu
IPC分类号： H05B37/02
CPC分类号： H05B33/0818 , H05B33/0851
摘要： In a control circuit for a light-emitting device, a reference voltage generation circuit detects a full-wave rectified voltage and generates a first voltage as well as generating a second voltage by converting the rectified voltage into a DC voltage. A voltage corresponding to a difference between the first voltage and the second voltage or a voltage corresponding to a ratio of the first voltage to the second voltage is generated as a reference voltage by a subtraction circuit or by a division circuit, respectively. As a result, a change in amplitude of the reference voltage can be suppressed when amplitude of the rectified voltage is varied due to a variation in an AC input voltage supplied from an AC power supply.
摘要翻译：在发光装置的控制电路中，参考电压产生电路检测全波整流电压，并通过将整流电压转换成直流电压来产生第一电压以及产生第二电压。相应于第一电压和第二电压之间的差的电压或对应于第一电压与第二电压的比率的电压分别由减法电路或分频电路产生作为参考电压。结果，由于由交流电源供给的交流输入电压的变化，整流电压的振幅变化，可以抑制基准电压的振幅的变化。

2. 发明授权

US09125265B2 Light-emitting device control circuit 有权
标题翻译：发光装置控制电路
公开(公告)号：US09125265B2
公开(公告)日：2015-09-01
申请号：US13569945
申请日：2012-08-08
申请人： Hiroyuki Kojima , Noriaki Okada , Kazuhiko Saito , Shuhei Kawai , Feng Xu
发明人： Hiroyuki Kojima , Noriaki Okada , Kazuhiko Saito , Shuhei Kawai , Feng Xu
IPC分类号： H05B33/08 , H05B37/02
CPC分类号： H05B33/0818 , H05B33/0851
摘要： In a control circuit for a light-emitting device, a reference voltage generation circuit detects a full-wave rectified voltage and generates a first voltage as well as generating a second voltage by converting the rectified voltage into a DC voltage. A voltage corresponding to a difference between the first voltage and the second voltage or a voltage corresponding to a ratio of the first voltage to the second voltage is generated as a reference voltage by a subtraction circuit or by a division circuit, respectively. As a result, a change in amplitude of the reference voltage can be suppressed when amplitude of the rectified voltage is varied due to a variation in an AC input voltage supplied from an AC power supply.
摘要翻译：在发光装置的控制电路中，参考电压产生电路检测全波整流电压，并通过将整流电压转换成直流电压来产生第一电压以及产生第二电压。相应于第一电压和第二电压之间的差的电压或对应于第一电压与第二电压的比率的电压分别由减法电路或分频电路产生作为参考电压。结果，由于由交流电源供给的交流输入电压的变化，整流电压的振幅变化，可以抑制基准电压的振幅的变化。

3. 发明授权

US09137868B2 Light emitting element driving circuit 有权
标题翻译：发光元件驱动电路
公开(公告)号：US09137868B2
公开(公告)日：2015-09-15
申请号：US13495618
申请日：2012-06-13
申请人： Feng Xu , Shuhei Kawai , Tomoyuki Goto
发明人： Feng Xu , Shuhei Kawai , Tomoyuki Goto
IPC分类号： H05B37/00 , H05B33/08
CPC分类号： H05B33/0824 , H05B33/0851
摘要： In accordance with an embodiment, a light emitting element driving circuit includes a comparator having an input connected to smoothing circuit and an output connected to a voltage-dividing circuit through a transistor. A drain-to-source resistance of the transistor is connected in parallel with a portion of the voltage dividing circuit. An output signal of the voltage dividing circuit is connected to another comparator that generates a drive transistor drive signal. The drive transistor is connected to one or more light emitting elements. In accordance with another embodiment, a reference voltage is generated in response to a rectified signal and compared with a sense voltage to generate a drive signal that is used to drive the drive transistor. Light is emitted from the one or more light emitting elements in response to the drive signal and the rectified voltage being greater than the forward voltage drops of the one or more light emitting elements.
摘要翻译：根据实施例，发光元件驱动电路包括具有连接到平滑电路的输入的比较器和通过晶体管连接到分压电路的输出。晶体管的漏极 - 源极电阻与分压电路的一部分并联连接。分压电路的输出信号连接到产生驱动晶体管驱动信号的另一个比较器。驱动晶体管连接到一个或多个发光元件。根据另一实施例，响应于整流信号产生参考电压并与感测电压进行比较以产生用于驱动驱动晶体管的驱动信号。响应于驱动信号而从一个或多个发光元件发射光，并且整流电压大于一个或多个发光元件的正向电压降。

4. 发明授权

US08736194B2 LED dimmer circuit 有权
标题翻译： LED调光电路
公开(公告)号：US08736194B2
公开(公告)日：2014-05-27
申请号：US13432798
申请日：2012-03-28
申请人： Shuhei Kawai , Tomoyuki Goto , Feng Xu
发明人： Shuhei Kawai , Tomoyuki Goto , Feng Xu
IPC分类号： H05B37/02
CPC分类号： H05B33/0851 , H05B33/0815 , H05B33/0818
摘要： A TRIAC dimmer gates an AC waveform from an AC power source in proportion to a control signal and outputs a TRIAC pulse having part of the waveform missing. The TRIAC pulse is rectified and is applied to an LED array and the drive current flowing to the LED array is detected at a current detection resistor. The drive current value and a predetermined value are compared at a comparator and in accordance with the comparison result thereof the control transistor is turned off. Then, the TRIAC pulse is converted to a DC voltage signal and in accordance with the obtained DC voltage signal the drive current value or the predetermined value input by the comparator are changed. Furthermore, instead of the TRIAC pulse, a PWM pulse supplied from an external source may also be utilized.
摘要翻译： TRIAC调光器根据控制信号与AC电源对交流波形进行门控，并输出一部分波形丢失的TRIAC脉冲。 TRIAC脉冲被整流并施加到LED阵列，并且在电流检测电阻器处检测流到LED阵列的驱动电流。驱动电流值和预定值在比较器处进行比较，并根据其比较结果控制晶体管截止。然后，将TRIAC脉冲转换成直流电压信号，并且根据获得的直流电压信号，改变由比较器输入的驱动电流值或预定值。此外，也可以使用从外部源提供的PWM脉冲来代替TRIAC脉冲。

5. 发明申请

US20130002161A1 LIGHT EMITTING ELEMENT DRIVING CIRCUIT 有权
标题翻译：发光元件驱动电路
公开(公告)号：US20130002161A1
公开(公告)日：2013-01-03
申请号：US13495618
申请日：2012-06-13
申请人： Feng Xu , Shuhei Kawai , Tomoyuki Goto
发明人： Feng Xu , Shuhei Kawai , Tomoyuki Goto
IPC分类号： H05B37/00
CPC分类号： H05B33/0824 , H05B33/0851
摘要： A light emitting element driving circuit comprising: a rectifying circuit; a voltage-dividing circuit; a transistor increasing or reducing a driving current of a light emitting element according to turning on or off a rectified voltage; a control circuit bringing the transistor to an on or off state at predetermined intervals and bringing the transistor to the other state when a voltage according to a current flowing through the transistor increases and becomes the reference voltage being divided voltage obtained by dividing the rectified voltage; and a voltage-dividing ratio adjustment circuit to set a voltage-dividing ratio of the voltage dividing circuit as a first voltage-dividing ratio to reduce the reference voltage when an amplitude of the rectified voltage is larger than predetermined amplitude and to set the voltage-dividing ratio as a second voltage-dividing ratio to increase the reference voltage when an amplitude of the rectified voltage is smaller than predetermined amplitude.
摘要翻译：一种发光元件驱动电路，包括：整流电路; 分压电路; 晶体管，通过导通或截止整流电压来增加或减小发光元件的驱动电流; 控制电路，其以预定间隔使晶体管处于导通或截止状态，并且当根据流过晶体管的电流的电压增加时将晶体管置于另一状态，并将其作为通过分压整流电压而获得的分压的基准电压; 以及分压比调整电路，当整流电压的振幅大于预定振幅时，将分压电路的分压比设定为第一分压比，以降低基准电压，分压比作为第二分压比，当整流电压的振幅小于预定幅度时增加参考电压。

6. 发明申请

US20120249000A1 LED DIMMER CIRCUIT 有权
标题翻译： LED调光电路
公开(公告)号：US20120249000A1
公开(公告)日：2012-10-04
申请号：US13432798
申请日：2012-03-28
申请人： Shuhei Kawai , Tomoyuki Goto , Feng Xu
发明人： Shuhei Kawai , Tomoyuki Goto , Feng Xu
IPC分类号： H05B37/02
CPC分类号： H05B33/0851 , H05B33/0815 , H05B33/0818
摘要： A TRIAC dimmer gates an AC waveform from an AC power source in proportion to a control signal and outputs a TRIAC pulse having part of the waveform missing. The TRIAC pulse is rectified and is applied to an LED array and the drive current flowing to the LED array is detected at a current detection resistor. The drive current value and a predetermined value are compared at a comparator and in accordance with the comparison result thereof the control transistor is turned off. Then, the TRIAC pulse is converted to a DC voltage signal and in accordance with the obtained DC voltage signal the drive current value or the predetermined value input by the comparator are changed. Furthermore, instead of the TRIAC pulse, a PWM pulse supplied from an external source may also be utilized.
摘要翻译： TRIAC调光器根据控制信号与交流电源门控交流波形，并输出一部分波形丢失的TRIAC脉冲。 TRIAC脉冲被整流并施加到LED阵列，并且在电流检测电阻器处检测流到LED阵列的驱动电流。驱动电流值和预定值在比较器处进行比较，并根据其比较结果控制晶体管截止。然后，将TRIAC脉冲转换成直流电压信号，并且根据获得的直流电压信号，改变由比较器输入的驱动电流值或预定值。此外，也可以使用从外部源提供的PWM脉冲来代替TRIAC脉冲。

7. 发明申请

US20070008028A1 Over boosting prevention circuit 审中-公开
标题翻译：超强防止电路
公开(公告)号：US20070008028A1
公开(公告)日：2007-01-11
申请号：US11475258
申请日：2006-06-27
申请人： Shuhei Kawai
发明人： Shuhei Kawai
IPC分类号： G05F1/10
CPC分类号： H02M3/07
摘要： In a over boosting prevention circuit that prevents over boosting of a voltage boosting circuit, ripples caused in the voltage boosting circuit are removed to prevent malfunctioning. The over boosting prevention circuit controls the output voltage Vout ( VMAX. Influence of the ripples caused in the charge pump circuit is removed because the reference voltage Vref to an operational amplifier is determined relative to a ground voltage Vss.
摘要翻译：在防止升压电路过度升压的过电流保护电路中，除去升压电路引起的波纹以防止故障。过升压防止电路控制电荷泵电路的输出电压Vout（<0V），使得电源电压Vdd与电荷泵电路的输出电压Vout之间的差（Vdd-Vout）不超过预定值 VMAX。也就是说，当Vdd-Vout VMAX时停止升压操作。由于对运算放大器的参考电压Vref相对于接地电压Vss确定，所以在电荷泵电路中引起的波纹的影响被去除。

8. 发明申请

US20060154713A1 Spatial position sharing system, data sharing system, network game system, and network game client 审中-公开
标题翻译：空间位置共享系统，数据共享系统，网络游戏系统和网络游戏客户端
公开(公告)号：US20060154713A1
公开(公告)日：2006-07-13
申请号：US10528124
申请日：2003-09-10
申请人： Yoshinari Sunazuka , Shuhei Kawai , Tomoharu Kimura
发明人： Yoshinari Sunazuka , Shuhei Kawai , Tomoharu Kimura
IPC分类号： A63F13/00
CPC分类号： A63F13/77 , A63F13/12 , A63F13/35 , A63F13/537 , A63F13/803 , A63F13/87 , A63F13/95 , A63F2300/407 , A63F2300/50 , A63F2300/572 , A63F2300/8017
摘要： In a client (16), current position information and predicted future position information for an object that have been generated in another client (16) are received, and estimated current position information for the same object in virtual space are sequentially generated based on these items of information. A game server (12) controls transfer of position information received from non-specified clients to specified clients. Further, at the client (16), in a message input mode, current position information for an object is generated automatically or semi-automatically, and that current position information is transmitted to the game server (12).
摘要翻译：在客户端（16）中，接收在另一客户端（16）中生成的对象的当前位置信息和预测未来位置信息，并且基于这些项目依次生成用于虚拟空间中的相同对象的估计当前位置信息的信息。游戏服务器（12）控制从非指定客户端接收到的位置信息到指定客户端的传送。此外，在客户端（16），在消息输入模式中，自动或半自动生成对象的当前位置信息，并且将当前位置信息发送到游戏服务器（12）。

9. 发明申请

US20050218970A1 Driver circuit 有权
标题翻译：驱动电路
公开(公告)号：US20050218970A1
公开(公告)日：2005-10-06
申请号：US11091342
申请日：2005-03-29
申请人： Shuhei Kawai , Takashige Ogata , Tatsuya Suzuki
发明人： Shuhei Kawai , Takashige Ogata , Tatsuya Suzuki
IPC分类号： H01L33/00 , G02F1/133 , G05F3/26 , G09G3/36 , H03F3/45 , H03K17/00 , H03K17/06 , H03K17/687 , H03K19/094 , H05B33/08 , H05B37/02
CPC分类号： H05B33/0815 , H03K17/063 , H03K17/687 , H03K2217/0036 , H05B33/0827
摘要： A driver circuit to obtain a current to drive a light emitting device is reduced in a patterning area and improved in efficiency. A positive power supply voltage Vdd is applied to an agnode of a white LED, while a voltage −0.5 Vdd from a −0.5 Vdd generation circuit is applied to a cathode of the white LED through an N-channel type MOS transistor. The −0.5 Vdd generation circuit generates the voltage −0.5 Vdd according to a clock Φ from a clock generation circuit. A voltage of 1.5 Vdd is applied between the anode and the cathode of the white LED, as equivalent to a prior art. Since N-channel type MOS transistors are heavily used in the −0.5 Vdd generation circuit, the driver circuit requires less patterning area to obtain the same amount of current to drive the LED as in the prior art. In addition, a parasitic capacitance is reduced to improve efficiency of the driver circuit.
摘要翻译：获得用于驱动发光器件的电流的驱动器电路在图案化区域中减小并且效率提高。正电源电压Vdd施加到白色LED的电源，而来自-0.5Vdd产生电路的电压-0.5Vdd通过N沟道型MOS晶体管施加到白色LED的阴极。 -0.5Vdd产生电路根据来自时钟发生电路的时钟Phi产生电压-0.5Vdd。与现有技术相当，在白色LED的阳极和阴极之间施加1.5Vdd的电压。由于在-0.5Vdd生成电路中大量使用N沟道型MOS晶体管，因此驱动电路需要较少的图案化面积以获得与现有技术相同的驱动LED的电流量。此外，减小寄生电容以提高驱动电路的效率。

10. 发明申请

US20110199145A1 SWITCHING CONTROL CIRCUIT 有权
标题翻译：切换控制电路
公开(公告)号：US20110199145A1
公开(公告)日：2011-08-18
申请号：US13028669
申请日：2011-02-16
申请人： Shuhei Kawai , Iwao Fukushi , Masahiro Maruki
发明人： Shuhei Kawai , Iwao Fukushi , Masahiro Maruki
IPC分类号： H03K17/56
CPC分类号： H02M3/156
摘要： A switching-control circuit to control switching of a transistor whose input electrode is applied with an input voltage, and turn off the transistor, when an output current from the transistor is greater than a reference current, includes: a reference-voltage-generating circuit to generate such a first-reference voltage that the reference current is reduced with reduction in an output voltage; a comparing circuit to compare a voltage corresponding to the output current with the first-reference voltage; and a driving circuit to turn on/off the transistor based on a feedback voltage corresponding to the output voltage and a second reference voltage corresponding to a target level so that the output voltage reaches the target level, when the comparing circuit determines that the output current is smaller than the reference current, and turn off the transistor when the comparing circuit determines that the output current is greater than the reference current.
摘要翻译：一种开关控制电路，用于控制输入电极施加输入电压的晶体管的开关，并且当来自晶体管的输出电流大于参考电流时，截止晶体管的开关控制电路包括：基准电压产生电路以产生这样的第一参考电压，使得参考电流随着输出电压的降低而减小; 比较电路，用于将对应于输出电流的电压与第一参考电压进行比较; 以及驱动电路，用于基于对应于输出电压的反馈电压和对应于目标电平的第二参考电压来接通/关断晶体管，使得当比较电路确定输出电流时，输出电压达到目标电平小于参考电流，并且当比较电路确定输出电流大于参考电流时，关断晶体管。

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