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    • 4. 发明授权
    • Isolated switch-mode power supply device
    • 隔离式开关电源装置
    • US08625317B2
    • 2014-01-07
    • US13509749
    • 2011-07-13
    • Masaaki HayashiHiroshi Narisawa
    • Masaaki HayashiHiroshi Narisawa
    • H02M1/36
    • H02M1/36H02M3/33523H02M2001/0006H02M2001/0035Y02B70/16
    • The present invention provides an isolated switch-mode power supply device capable of sufficiently reducing power consumption in a standby mode. An isolated switch-mode power supply device includes: a capacitor that supplies control power for controlling switching of a switching element; a first control unit that includes a constant current supplying unit that controls switching of the switching element; a switching element that connects or disconnects the first control unit and the capacitor; a capacitance element unit having a capacitor to which a constant current is supplied from the constant current supplying unit, a capacitor charge voltage of the capacitance element unit changing according to an outputted voltage in the standby mode; and a second control unit that controls power supply to the first control unit by closing or opening the switching element during a switching pause period in the standby mode according to the capacitor charge voltage of the capacitor.
    • 本发明提供一种能够在待机模式下充分降低功耗的隔离开关电源装置。 隔离开关电源装置包括:电容器,其提供用于控制开关元件的开关的控制电力; 第一控制单元,其包括控制所述开关元件的开关的恒流供给单元; 连接或断开第一控制单元和电容器的开关元件; 电容元件单元,具有从所述恒定电流供给单元供给恒定电流的电容器,所述电容元件单元的电容器充电电压根据所述待机模式下的输出电压而变化; 以及第二控制单元,其根据电容器的电容器充电电压在待机模式下的切换暂停时段期间通过关闭或打开开关元件来控制对第一控制单元的电力供应。
    • 6. 发明授权
    • Image reading apparatus having multiple wavelength light sources and control method for the same
    • 具有多个波长光源的图像读取装置及其控制方法
    • US06501087B1
    • 2002-12-31
    • US09549834
    • 2000-04-14
    • Hideyuki KoretsuneMasaaki Hayashi
    • Hideyuki KoretsuneMasaaki Hayashi
    • G06K1100
    • G07D7/121
    • To keep operation of a control circuit for a line sensor reading operation always the same regardless of variations and differences between readers, simplify the control circuit, and avoid complicated processes such as setting various software process parameters for canceling differences between the readers. A line shaped, two-wavelength transmitting LED array and a line shaped light emitting/photodetecting part comprising a photodetector array and a two-wavelength reflecting LED array are disposed in opposition each other such that a read medium passes between the two-wavelength LED array for transmitting light and the light emitting/photodetecting part, and the two-wavelength LED array for tranmitting light and two-wavelength LED array for reflecting light emit light of different wavelengths. An storage time control circuit is disposed in a signal processing circuit of the photodetector array; and a control means is provided for controlling light emission with the two-wavelength transmitting LED array and two-wavelength reflecting LED array, controlling reading with the photodetectors, and controlling the storage time control circuit. Variations in wavelength detection sensitivity and light quantity with different scanned media are adjusted by means of the storage time of the storage time control circuit.
    • 为了保持线路传感器读取操作的控制电路的操作始终相同,无论读取器之间的差异如何,简化控制电路,并避免复杂的过程,例如设置各种软件过程参数以消除读取器之间的差异。 包括光电检测器阵列和双波长反射LED阵列的线形双波长透射LED阵列和线形发光/光电检测部分彼此相对设置,使得读介质在双波长LED阵列之间通过 用于发射光和发光/光电检测部分,用于发光的双波长LED阵列和用于反射光的双波长LED阵列发射不同波长的光。 存储时间控制电路设置在光电检测器阵列的信号处理电路中; 并且提供控制装置,用于控制双波长透射LED阵列和双波长反射LED阵列的发光,控制用光电检测器的读取,并控制存储时间控制电路。 通过存储时间控制电路的存储时间来调整不同扫描介质的波长检测灵敏度和光量的变化。