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    • 21. 发明授权
    • Electronic ballast with feedback current control for preheating of lamp filaments
    • 电子镇流器,具有反馈电流控制,用于预热灯丝
    • US08400074B2
    • 2013-03-19
    • US12711752
    • 2010-02-24
    • Junichi HasegawaNobutoshi Matsuzaki
    • Junichi HasegawaNobutoshi Matsuzaki
    • H05B41/36
    • H05B41/388H05B41/2883Y02B20/204
    • A discharge lamp ballast is provided for powering a discharge lamp with feedback filament heating control. A startup circuit is coupled between output terminals of a DC-AC power converter together with a discharge lamp. A lamp current detection circuit and a lamp voltage detection circuit detect output signals to the lamp. A control circuit controls the switching elements and generates an operating frequency in accordance with a startup operation to generate a high voltage output from the startup circuit and ignite the discharge lamp, a filament heating operation wherein the operating frequency is controlled so as to set the amplitude of the output current detected by the lamp current detection circuit to a target current amplitude based on the amplitude of the output voltage detected by the lamp voltage detection circuit, and a steady-state operation wherein the operating frequency is decreased to maintain a stable light output from the discharge lamp.
    • 提供放电灯镇流器用于为反馈灯加热控制的放电灯供电。 启动电路与放电灯一起耦合在DC-AC电力转换器的输出端子之间。 灯电流检测电路和灯电压检测电路检测到灯的输出信号。 控制电路控制开关元件并根据启动操作产生工作频率,以产生从启动电路输出的高电压并点燃放电灯;灯丝加热操作,其中控制工作频率以设定振幅 基于由灯电压检测电路检测出的输出电压的振幅,由灯电流检测电路检测到的输出电流为目标电流幅度,以及稳态操作,其中工作频率降低以保持稳定的光输出 从放电灯。
    • 24. 发明授权
    • Delay demodulation devices
    • 延时解调装置
    • US07978401B2
    • 2011-07-12
    • US12415407
    • 2009-03-31
    • Junichi HasegawaKazutaka Nara
    • Junichi HasegawaKazutaka Nara
    • H04B10/06G02F2/00
    • G02B6/12007G02B6/125H04B10/677
    • The delay demodulation device 1 comprises: an input waveguide 2 which receives DQPSK signals; a Y-branch waveguide 3 which splits the input waveguide 2; a first Mach-Zehnder interferometer 4; and a second Mach-Zehnder interferometer 5. Both end of two arm-waveguides 8, 9 of the first Mach-Zehnder interferometer 4 and both ends of two arm-waveguides 12, 13 of the second Mach-Zehnder interferometer 5 are angled toward the center portion of a planar lightwave circuit (PLC) 1A. Because of the angle, the length of the two arm-waveguides 8, 9 of the first Mach-Zehnder interferometer 4 and the length of the two arm-waveguides 12, 13 of the second Mach-Zehnder interferometer 5 in Z-direction can be shortened, and input couplers 6,10 and output couplers 7,11 of each Mach-Zehnder interferometers in Z-direction can be shortened as well. The area occupied by each Mach-Zehnder interferometers 4, 5 are also reduced.
    • 延迟解调装置1包括:输入波导2,其接收DQPSK信号; 分割输入波导2的Y分支波导3; 第一马赫 - 曾德干涉仪4; 和第二马赫 - 策德尔干涉仪5.第二马赫 - 策德尔干涉仪4的两个臂波导8,9的两端和第二马赫 - 策德尔干涉仪5的两个臂波导12,13的两端相对于 平面光波电路(PLC)1A的中心部分。 由于角度,第一马赫 - 策德尔干涉仪4的两个臂波导8,9的长度和第二马赫 - 策德尔干涉仪5的两个臂波导12,13在Z方向上的长度可以是 每个马赫 - 策德尔干涉仪在Z方向上的缩短和输入耦合器6,10和输出耦合器7,11也可以被缩短。 每个马赫 - 曾德干涉仪4,5所占据的面积也减少了。
    • 25. 发明授权
    • Delay demodulation devices
    • 延时解调装置
    • US07961991B2
    • 2011-06-14
    • US12412932
    • 2009-03-27
    • Junichi HasegawaKazutaka Nara
    • Junichi HasegawaKazutaka Nara
    • G02B6/12
    • G02F2/00G02F2001/212
    • The delay demodulation device 1 comprises an input waveguide 2 which receives DQPSK signals; a Y-branch waveguide 3 which splits the light waveguide 2; a first Mach-Zehnder interferometer (MZI) 4; and a second Mach-Zehnder interferometer 5. Both ends of the arm-waveguides 8, 9 of the MZI 4 and the both ends of the arm-waveguides 12, 13 of the MZI 5 are bent toward the center portion of the planar lightwave circuit (PLC) 1A. Thereby, the length of the arm-waveguides 8, 9 of the MZI 4 and the length of the arm-waveguides of the MZI 5 are shortened in the Z-direction. And, the length of the input couplers 6, 10 and the output couplers 7, 11 of the MZIs 4, 5 are shortened in the Z-direction. Therefore, the area covered by the MZIs 4, 5 can be made smaller.
    • 延迟解调装置1包括接收DQPSK信号的输入波导2; 分离光波导2的Y分支波导3; 第一马赫曾德尔干涉仪(MZI)4; 和第二马赫 - 策德尔干涉仪5.MZI4的臂波导8,9的两端和MZI 5的臂波导12,13的两端朝向平面光波电路的中心部分弯曲 (PLC)1A。 由此,MZI4的臂波导8,9的长度和MZI 5的臂波导的长度在Z方向上缩短。 并且,输入耦合器6,10的长度和MZI 4,5的输出耦合器7,11在Z方向上缩短。 因此,MZI 4,5的覆盖范围可以更小。
    • 26. 发明申请
    • PORTABLE ELECTRONIC DEVICE
    • 便携式电子设备
    • US20110057872A1
    • 2011-03-10
    • US12675114
    • 2008-08-25
    • Junichi Hasegawa
    • Junichi Hasegawa
    • G09G5/00
    • H04M1/72583G06F3/0485
    • A portable electronic device has a display part (16) which can display a plurality of selection items; an operation part (12) for selecting the selection item displayed on the display part (16); and a control part (18) which switches the selection item to other selection item selected from the selection items displayed on the display part (16) by operation of the operating part (12). The control part (18) has a function of changing the switching speed of the selection item selected by the operation of the operation part (12) in accordance with display mode of each of the selection items displayed on the display part (16). Thus, usability is improved by, for instance, changing a scroll speed for the continuous selection operation.
    • 便携式电子装置具有能够显示多个选择项目的显示部件(16) 用于选择显示在显示部分上的选择项目的操作部分; 以及控制部(18),其通过操作部(12)的操作将选择项切换到从显示部(16)上显示的选择项中选择的其他选择项。 控制部(18)具有根据显示在显示部(16)上的各选择项的显示模式,改变由操作部(12)的动作所选择的选择项的切换速度的功能。 因此,通过例如改变用于连续选择操作的滚动速度来提高可用性。
    • 27. 发明申请
    • HID LAMP BALLAST WITH MULTI-PHASE OPERATION BASED ON A DETECTED LAMP ILLUMINATION STATE
    • 基于检测灯照明状态的多相操作的HID灯泡
    • US20110018453A1
    • 2011-01-27
    • US12843747
    • 2010-07-26
    • Junichi HasegawaTakeshi Goriki
    • Junichi HasegawaTakeshi Goriki
    • H05B41/36
    • H05B41/2886H05B41/2887
    • An electronic ballast is provided for improved startup and powering of a high pressure discharge lamp. The ballast includes an inverter, a starting circuit for generating a high voltage to ignite the lamp, a controller for controlling an operating frequency of the inverter from startup to steady-state lamp operation, and a lamp output detection circuit. The controller controls the inverter in association with one or more of a first phase in which the starting circuit generates the high voltage and causes dielectric breakdown between the lamp electrodes, a second phase in which an electrode heating operation is performed after dielectric breakdown and a third phase in which steady-state operation of the lamp is performed. A lamp output determination is performed at a predetermined time before shifting to the third phase, and upon determining that the lamp is ignited the second phase is inserted.
    • 提供电子镇流器用于改善高压放电灯的启动和供电。 镇流器包括逆变器,用于产生高电压以点燃灯的启动电路,用于控制逆变器从启动到稳态灯操作的工作频率的控制器,以及灯输出检测电路。 控制器与其中起动电路产生高电压的第一相中的一个或多个相关联地控制逆变器,并且在灯电极之间引起电介质击穿,在介电击穿之后进行电极加热操作的第二相和第三相 执行灯的稳态操作的相位。 在转移到第三相之前的预定时间执行灯输出确定,并且在确定灯被点燃时插入第二相。
    • 29. 发明申请
    • DELAY-LINE DEMODULATOR
    • 延迟线解调器
    • US20090097101A1
    • 2009-04-16
    • US12248871
    • 2008-10-09
    • Junichi HasegawaKazutaka Nara
    • Junichi HasegawaKazutaka Nara
    • G02F2/00
    • G02F2/00H04B10/505H04B10/677
    • Problem to be Solved To provide a delay-line demodulator of which the divergence amount of polarization is reduced.Solution: A delay-line demodulator 1 for a DQPSK signal to be demodulated comprises two of Mach-Zehnder interferometers 6 and 7 individually comprising two of waveguides having different lengths therebetween through which a light signal branched the DQPSK signal propagates respectively, for delaying a phase of the light signal propagating at one of the waveguides as an amount of one symbol comparing to a phase of the light signal propagating at another one of the waveguides, wherein a divergence amount of polarization is adjusted by driving a first heater A and a fourth heater D, or a third heater B and a second heater C, that are facing to each other as sandwiching a half wavelength plate therebetween.
    • 要解决的问题提供减小偏振发散量的延迟线解调器。 解决方案:用于要解调的DQPSK信号的延迟线解调器1包括两个马赫 - 策德尔干涉仪6和7,其分别包括两个不同长度的波导,通过该两个波导分支DQPSK信号的光信号分别传播,以延迟相位 在一个波导上传播的光信号作为与在另一个波导上传播的光信号的相位相比的一个符号的量,其中通过驱动第一加热器A和第四加热器来调节偏振的发散量 D或第三加热器B和第二加热器C,它们彼此面对,将半波长板夹在其间。
    • 30. 发明授权
    • Delay-line demodulator and method of adjusting a phase shift in the demodulator
    • 延迟线解调器和调制解调器相移的方法
    • US07480091B2
    • 2009-01-20
    • US12042768
    • 2008-03-05
    • Junichi HasegawaKazutaka Nara
    • Junichi HasegawaKazutaka Nara
    • G02F2/00
    • G02F1/225G02F1/0147G02F2201/16G02F2201/20H04B10/677
    • In a method of phase adjustment for the demodulator 1 of the present invention, the phase adjustment is performed by driving any one of the heaters on the two waveguides 10 and 11 in the Mach-Zehnder interferometer (MZI) 6 and on the two waveguides 14 and 15 in the MZI 7. In case that an initial phase difference between the MZIs 6 and 7 smaller than a required phase difference as π/2 therebetween, the heaters C and D are driven, that are formed on the first waveguide 10 in the MZI 6, and the heaters G and H are driven, that are formed on the second waveguide 15 in the MZI 7. In case that the initial phase difference is larger than the required phase difference (π/2) therebetween, the heaters A and B formed on the second waveguide 11 in the MZI 6, and the heaters E and F formed on the first waveguide 14 in the MZI 7 are driven.
    • 在本发明的解调器1的相位调整方法中,通过驱动马赫曾德尔干涉仪(MZI)6中的两个波导10和11上的加热器中的任何一个以及两个波导14 在MZI7中为15。在MZI6和7之间的初始相位差小于所要求的相位差为π/ 2的情况下,驱动加热器C和D,在第一波导10上形成 MZI6,并且驱动加热器G和H,其形成在MZI 7中的第二波导15上。在初始相位差大于其间所需的相位差(pi / 2)的情况下,加热器A和 B形成在MZI 6中的第二波导11上,并且形成在MZI 7中的第一波导14上的加热器E和F被驱动。