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    • 22. 发明申请
    • Optical Reception Device
    • 光接收装置
    • US20080175602A1
    • 2008-07-24
    • US11792306
    • 2004-12-28
    • Shunsuke MitaniKazuyuki IshidaKatsuhiro Shimizu
    • Shunsuke MitaniKazuyuki IshidaKatsuhiro Shimizu
    • H04B10/06
    • H04B10/66
    • An optical reception device realizes stabilization of reception sensitivity inexpensively and highly precisely. The optical reception device includes: a Mach-Zehnder type 1-bit delay unit including a one-terminal input port and two-terminal output ports for decoding an optical difference phase shift keying (DPSK) signal and provided with one or more phase control functions to control the phase state of light; photoelectric conversion means for branching a portion of an optical output signal output from the one-side output port of the Mach-Zehnder type 1-bit delay unit, to convert the branched portion into an electric signal; and a phase control unit for controlling the phase state of the Mach-Zehnder type 1-bit delay device by using as an error signal the output signal of the photoelectric conversion means.
    • 光接收装置实现了廉价高精度的接收灵敏度的稳定化。 光接收装置包括:马赫 - 策德尔型1位延迟单元,其包括单端输入端口和用于解码光差分相移键控(DPSK)信号并具有一个或多个相位控制功能的两端输出端口 控制光的相位状态; 光电转换装置,用于对从Mach-Zehnder型1位延迟单元的单面输出端口输出的光输出信号的一部分进行分支,将分支部分转换为电信号; 以及相位控制单元,用于通过使用光电转换装置的输出信号作为误差信号来控制马赫 - 曾德尔型1位延迟装置的相位状态。
    • 27. 发明授权
    • Display apparatus, marker signal making process, marker signal detector circuit, and control signal generator circuit
    • 显示装置,标记信号制作过程,标记信号检测电路和控制信号发生器电路
    • US06674481B1
    • 2004-01-06
    • US09336624
    • 1999-06-18
    • Shunji UmemuraIchiro SatoKatsuhiro Shimizu
    • Shunji UmemuraIchiro SatoKatsuhiro Shimizu
    • H04N700
    • H04N5/45G09G5/14G09G2320/0686G09G2340/125G09G2370/04H04N5/44504H04N5/57
    • The present invention relates to a display apparatus, a marker signal making process, a marker signal detector circuit, and a control signal generator circuit that are suitable for use when making a display in which a display screen is divided into a plurality of areas and images whose picture qualities are different at every area are displayed. Thus, in the present invention, image signals (R/G/B) from input terminals 1R, 1G, 1B are supplied to a preamplifier IC 3, e.g. to respective sharpness improving circuits 32R, 32G, 32B therein. Image signals derived from the preamplifier IC 3 are subjected to DC voltage conversion by a cutoff adjusting amplifier 6 and then supplied, e.g. to a cathode ray tube 7 as a display means. A microcomputer 40 which is present within this apparatus and controls various kinds of functions forms first and second DC voltage data for controlling, e.g. the sharpness. These data are made into analog control DC voltage by D/A converters 34A, 34B and then selected by a switching circuit 36 to be supplied to the preamplifier IC 3. This switching circuit 36 is controlled by an arbitrary control signal. This enables the picture quality of image of photograph, moving video, etc. to be improved without making the information on characters, numerics, etc. hard to see, when displaying the image of photograph, moving video, etc. together with the information on characters, numerics etc.
    • 显示装置,标记信号制作过程,标记信号检测器电路和控制信号发生器电路技术领域本发明涉及一种显示装置,标记信号制作过程,标记信号检测器电路和控制信号发生器电路,其适于在显示屏被分成多个区域和图像时使用 显示每个区域的图像质量不同。 因此,在本发明中,来自输入端子1R,1G,1B的图像信号(R / G / B)被提供给前置放大器IC 3,例如, 各自的锐度改善电路32R,32G,32B。 从前置放大器IC3得到的图像信号由截止调节放大器6进行直流电压转换, 作为显示装置的阴极射线管7。 存在于该装置内并控制各种功能的微计算机40形成第一和第二DC电压数据, 清晰度 这些数据由D / A转换器34A,34B形成为模拟控制DC电压,然后由切换电路36选择供给前置放大器IC3.该切换电路36由任意控制信号控制。 这样,当将图像,移动视频等与图像信息一起显示时,不会使关于字符,数字等的信息难以看出,可以提高照片,移动视频等的图像的图像质量。 字符,数字等