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    • 1. 发明专利
    • DISPLACEMENT MEASURING DEVICE
    • JPH11201721A
    • 1999-07-30
    • JP282998
    • 1998-01-09
    • CITIZEN WATCH CO LTD
    • MATSUMOTO KENJIMOROKAWA SHIGERU
    • G01D5/36G01B11/00G01D5/38
    • PROBLEM TO BE SOLVED: To provide a displacement measuring device having little measurement error of the displacement position caused by such defects as the fluctuation of the moire fringe pitch and refuse or scars on a scale and capable of interpolating the displacement position in the lattice pitch with high accuracy. SOLUTION: This displacement measuring device is constituted of a light source 11, a lens 12 converting the light flux emitted from the light source 11 and having a spread into nearly parallel light, a polarizer 13a converting the light flux into linearly polarized light, a main scale 14a carved with a lattice having the prescribed pitch, an auxiliary scale 15a capable of displaying a lattice having the same pitch as that of the main scale 14 a and inclined by a slight angle θ, another polarizer 13b arranged with its transmission axis drifted by the prescribed angle against the polarizer 13a, and a photoelectric transfer member detecting the moire fringe formed by two scales 14a, 15a. The auxiliary scale 15a is made of a liquid crystal element forming the wiring pattern so that the phase can be shifted by 90 deg..
    • 3. 发明专利
    • LIQUID CRYSTAL DISPLAY PANEL
    • JPH0980432A
    • 1997-03-28
    • JP23635995
    • 1995-09-14
    • CITIZEN WATCH CO LTD
    • NAKAMURA SATOKATSUMOROKAWA SHIGERU
    • G02F1/137G02F1/1333G02F1/1335G02F1/13357
    • PROBLEM TO BE SOLVED: To provide a clear display screen of high luminance in either case when an optical shutter is used as a reflection type and when the shutter is used as a transmission type by installing the optical shutter capable of reversibly switching a state that a reflectance is high and a transmission is low to a state that the transmission is high and the reflectance is low. SOLUTION: As for the optical shutter 102 installed between a liquid crystal display cell 101 and a back light unit 103, a 1st state that the reflectance is high and the transmittance is low is reversibly switched to the 2nd state that the transmittance is high and the reflectance is low. Switching the state is executed cooperatively with the on-off control of the back light unit 103 by a mode switching signal ϕmode. When the back light unit is turned off, that is, when the shutter 102 is used as the reflection type, the state of the optical shutter 102 is switched to the 1st state so that it may function as a reflection plate, meanwhile, when the back light unit is turned on, that is, when the shutter 102 is used as the transmission type, the state is switched to the 2nd state, then, the light from the back light unit 103 is efficiently transmitted through the optical shutter.
    • 10. 发明专利
    • Reference signal oscillator
    • 参考信号振荡器
    • JPS59193607A
    • 1984-11-02
    • JP6781683
    • 1983-04-19
    • Citizen Watch Co Ltd
    • MOROKAWA SHIGERU
    • H03B5/32
    • H03B5/32
    • PURPOSE:To attain minute adjustment of an oscillating frequency by connecting in time division an impedance element adjustable via an electronic switch controlled by a pulse train having a prescribed impulse coefficient to a resonance circuit. CONSTITUTION:The impedance element 5 whose impedance value is adjusted optionally is provided to a part of an electric resonance circuit including a crystal oscillator 2. Then, the element 5 is connected in time division to a resonance circuit via an electronic switch circuit 6 controlled by the pulse train having the prescribed impulsive coefficient. As a result, the effective impedance value of the element 5 becomes a value multiplying a specific reducing factor to the impedance value of the element 5, and the minute adjustment is attained without decreasing the element 5 especially, allowing to attain minute adjustment of a frequency continuously.
    • 目的:通过时分方式对通过由具有规定的脉冲系数的脉冲串控制的电子开关调节到的谐振电路的阻抗元件进行时间分频来实现振荡频率的微调。 构成:将阻抗值可任意调整的阻抗元件5设置在包括晶体振荡器2的电谐振电路的一部分上。然后,元件5经由电子开关电路6以时分方式连接到谐振电路6,电子开关电路6由 脉冲串具有规定的脉冲系数。 结果,元件5的有效阻抗值成为将特定的减小因子与元件5的阻抗值相乘的值,并且在不减小元件5的情况下实现微调,特别是允许对频率进行微调 不断。