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1. 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。

2. 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）。

3. 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。

4. 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。

5. 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。

6. 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。

7. 发明授权

US07463236B2 Driver circuit 有权
标题翻译：驱动电路
公开(公告)号：US07463236B2
公开(公告)日：2008-12-09
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： G09G3/36
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 anode 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被施加到白色LED的阳极，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。与现有技术相同，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。

8. 发明申请

US20060049867A1 Charge pump circuit 有权
标题翻译：电荷泵电路
公开(公告)号：US20060049867A1
公开(公告)日：2006-03-09
申请号：US11212918
申请日：2005-08-29
申请人： Shuhei Kawai
发明人： Shuhei Kawai
IPC分类号： G05F1/10
CPC分类号： H02M3/073 , H03K2217/0018
摘要： A leakage path through a parasitic diode in a charge transfer MOS transistor is cut off to prevent increase in the power consumption and loss of control of a charge pump circuit. A first charge transfer MOS transistor and a second charge transfer MOS transistor are N-channel type and are connected in series with each other. A ground electric potential VSS is supplied to a source of the first charge transfer MOS transistor as an input electric potential, and an output electric potential is obtained from an output terminal connected with a drain of the second charge transfer MOS transistor. A back gate of the first charge transfer MOS transistor is set by a first switching circuit to either an electric potential at a connecting node between the first and the second charge transfer MOS transistors or the ground electric potential VSS.
摘要翻译：切断电荷转移MOS晶体管中的寄生二极管的泄漏路径，以防止功耗的增加和电荷泵电路的控制失去。第一电荷转移MOS晶体管和第二电荷转移MOS晶体管是N沟道型并且彼此串联连接。接地电位VSS作为输入电位被提供给第一电荷转移MOS晶体管的源极，并且从与第二电荷转移MOS晶体管的漏极连接的输出端子获得输出电位。第一电荷转移MOS晶体管的背栅由第一开关电路设置为第一和第二电荷转移MOS晶体管之间的连接节点处的电位或接地电位VSS。

9. 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。

10. 发明申请

US20110298395A1 CONTROL CIRCUIT OF LIGHT-EMITTING ELEMENT 有权
标题翻译：发光元件的控制电路
公开(公告)号：US20110298395A1
公开(公告)日：2011-12-08
申请号：US13152326
申请日：2011-06-03
申请人： Shuhei Kawai , Yoshio Fujimura
发明人： Shuhei Kawai , Yoshio Fujimura
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H02M1/44 , H02M3/156 , H05B33/0809 , H05B33/0824
摘要： A control circuit of a light-emitting element comprises a rectifying unit which full-wave rectifies an alternating current power supply, a clock generator which generates and outputs a clock signal (CLK), a first comparator which compares a comparison voltage (CS) corresponding to a current flowing to the light-emitting element and a reference voltage (REF), and a switching element which is set to an ON state in synchronization with the clock signal (CLK) and which is set to an OFF state when the comparison voltage (CS) becomes greater than the reference voltage (REF) at the first comparator, to switch the current flowing to the light-emitting element. In this structure, a period of the clock signal (CLK) generated in the clock generator is varied, to reduce or inhibit noise.
摘要翻译：发光元件的控制电路包括对交流电源进行全波整流的整流单元，产生并输出时钟信号（CLK）的时钟发生器，将比较电压（CS）对应的第一比较器与流向发光元件的电流和参考电压（REF）以及与时钟信号（CLK）同步地设定为ON状态的开关元件，并且当比较电压（CS）变得大于第一比较器处的参考电压（REF），以切换流向发光元件的电流。在这种结构中，时钟发生器中产生的时钟信号（CLK）的周期被改变，以减少或抑制噪声。

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