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    Discrimination circuit capable of automatically optimizing discrimination level and discrimination phase
    1.
    发明授权
    Discrimination circuit capable of automatically optimizing discrimination level and discrimination phase 失效
    鉴别电路能够自动优化辨别等级和辨别阶段

    公开(公告)号：US5736875A

    公开(公告)日：1998-04-07

    申请号：US618941

    申请日：1996-03-20

    申请人： Hisaya Sakamoto ,  Takashi Tsuda ,  Yasunori Nagakubo

    发明人： Hisaya Sakamoto ,  Takashi Tsuda ,  Yasunori Nagakubo

    IPC分类号： G11B7/00 ,  G11B7/005 ,  H03D13/00 ,  H03K5/08 ,  H03K5/125 ,  H04L25/03 ,  H03K5/153 ,  H01L31/00 ,  H03K5/22

    CPC分类号： H03K5/125 ,  H03K5/086

    摘要： In controlling a discrimination level V.sub.1, V.sub.1 is controlled so that discrimination results based on discrimination levels V.sub.1 +.DELTA.V and V.sub.1 -.DELTA.V each become equal to the discrimination result based on the discrimination level V.sub.1. If the discrimination result based on V.sub.1 +.DELTA.V does not agree with the discrimination result based on V.sub.1, V.sub.1 is lowered, and if the discrimination result based on V.sub.1 -.DELTA.V does not agree with the discrimination result based on V.sub.1, V.sub.1 is raised. In controlling a discrimination phase .PHI..sub.1, .PHI..sub.1 is controlled so that discrimination results based on discrimination phases .PHI..sub.1 +.DELTA..PHI. and .PHI..sub.1 -.DELTA..PHI. each become equal to the discrimination result based on the discrimination phase .PHI..sub.1. If the discrimination result based on .PHI..sub.1 +.DELTA..PHI. does not agree with the discrimination result based on .PHI..sub.1, .PHI..sub.1 is delayed, and if the discrimination result based on .PHI..sub.1 -.DELTA..PHI. does not agree with the discrimination result based on .PHI..sub.1, .PHI..sub.1 is advanced.

    摘要翻译： 在控制识别电平V1时，V1被控制，使得基于识别电平V1 + DELTA V和V1- DELTA V的辨别结果分别基于鉴别电平V1等于鉴别结果。 如果基于V1 + DELTA V的识别结果与基于V1的识别结果不一致，则V1降低，并且如果基于V1-DELTA V的识别结果与基于V1的识别结果不一致，则V1增加。 在控制鉴别阶段PHI 1时，控制PHI 1，使得基于鉴别阶段PHI 1+ DELTA PHI和PHI 1- DELTA PHI的辨别结果分别基于鉴别阶段PHI 1等于鉴别结果。如果鉴别结果 基于PHI 1+ DELTA PHI与基于PHI 1的鉴别结果不一致，PHI 1被延迟，并且如果基于PHI 1- DELTA PHI的判别结果与基于PHI 1的鉴别结果不一致，则PHI 1 是先进的

    Method for optical fiber communication, and device and system for use in carrying out the method
    6.
    发明授权
    Method for optical fiber communication, and device and system for use in carrying out the method 失效
    光纤通信方法，以及用于实施该方法的设备和系统

    公开(公告)号：US07006769B1

    公开(公告)日：2006-02-28

    申请号：US09256079

    申请日：1999-02-24

    申请人： Yumiko Kawasaki ,  Kazuo Yamane ,  Takashi Tsuda ,  Satoru Okano

    发明人： Yumiko Kawasaki ,  Kazuo Yamane ,  Takashi Tsuda ,  Satoru Okano

    IPC分类号： H04B10/00 ,  H04B10/12

    CPC分类号： H04B10/2525 ,  G02F1/0121 ,  G02F1/0123 ,  G02F2203/25 ,  H04B10/0775 ,  H04B10/07953 ,  H04B10/0799 ,  H04B2210/077 ,  H04B2210/252 ,  H04B2210/254

    摘要： The invention, relates to a method for optical fiber communication. An optical signal having chirping determined by a chirp parameter is output to an optical fiber transmission line. The optical signal transmitted by the optical fiber transmission line is converted into an electrical signal. A bit error of the electrical signal is detected. Then, the chirp parameter is controlled so that the bit error detected above is reduced. According to this method, the chirp parameter is controlled so that the bit error detected is reduced. Accordingly, a chirping occurring in the optical fiber transmission line can be suppressed by the chirping of the optical signal to be output to the optical fiber transmission line, thereby compensating for chromatic dispersion and nonlinearity.

    摘要翻译： 本发明涉及一种光纤通信方法。 将具有由啁啾参数确定的啁啾的光信号输出到光纤传输线。 由光纤传输线传输的光信号被转换为电信号。 检测到电信号的位错误。 然后，控制啁啾参数，使得上面检测到的位错误减少。 根据该方法，控制啁啾参数，使得检测到的位错误减少。 因此，可以通过对输出到光纤传输线的光信号的线性调频来抑制在光纤传输线中发生的线性调频，从而补偿色散和非线性。

    Analog-to-digital converter utilizing a random noise source
    7.
    发明授权
    Analog-to-digital converter utilizing a random noise source 失效
    使用随机噪声源的模数转换器

    公开(公告)号：US4034367A

    公开(公告)日：1977-07-05

    申请号：US551283

    申请日：1975-02-20

    申请人： Takashi Sugiyama ,  Takashi Tsuda

    发明人： Takashi Sugiyama ,  Takashi Tsuda

    IPC分类号： H03M1/00 ,  H03K13/02

    CPC分类号： H03M1/201

    摘要： An analog-to-digital converter arranged to accept an analog input signal and to convert it into an output having digital form. The converter is characterized by a reference random noise source which generates random noise signals with uniform amplitude occurrence probability density in a given range, and by an amplitude comparator arranged to repeatedly compare the amplitude of the random noise signal with the amplitude of a signal varying with the analog signal to be converted. The amplitude comparator supplies output pulses in accordance with the comparisons, e.g., whenever the analog signal amplitude is greater than the random noise amplitude, and the number of pulses from the amplitude comparator in a measurement interval then digitally corresponds to the value of the analog signal and may be utilized, as in a display. Resolution of the converter is increased beyond the minimum amplitude increment of the random noise source signal in one embodiment by superposition on either the analog signal or the random noise signal of a triangular wave with an amplitude greater than the minimum amplitude increment of the random noise signal, and in another embodiment by superposition of a second random noise signal.

    摘要翻译： 一种模拟 - 数字转换器，被配置为接受模拟输入信号并将其转换成具有数字形式的输出。 转换器的特征在于参考随机噪声源，其产生在给定范围内具有均匀振幅发生概率密度的随机噪声信号，并且通过幅度比较器布置成重复地比较随机噪声信号的振幅与随 要转换的模拟信号。 幅度比较器根据比较提供输出脉冲，例如，每当模拟信号幅度大于随机噪声幅度时，并且在测量间隔中来自幅度比较器的脉冲数然后数字地对应于模拟信号的值 并且可以如在显示器中那样被利用。 在一个实施例中，转换器的分辨率增加到随机噪声源信号的最小幅度增量之外，通过叠加具有大于随机噪声信号的最小振幅增量的三角波的模拟信号或随机噪声信号 ，并且在另一个实施例中通过叠加第二随机噪声信号。

    Camera head separated type camera device
    8.
    发明授权
    Camera head separated type camera device 有权
    相机头分离式相机装置

    公开(公告)号：US08411138B2

    公开(公告)日：2013-04-02

    申请号：US12787157

    申请日：2010-05-25

    申请人： Takashi Tsuda ,  Hiroshi Shinozaki ,  Masatoshi Ookubo ,  Kei Tashiro ,  Hiroyuki Irikura

    发明人： Takashi Tsuda ,  Hiroshi Shinozaki ,  Masatoshi Ookubo ,  Kei Tashiro ,  Hiroyuki Irikura

    IPC分类号： H04N7/18

    CPC分类号： H04N5/23209 ,  H04N5/23203 ,  H04N2005/2255

    摘要： According to an aspect of the present invention, there is provided a camera head separated type camera device including: a camera head; a camera control unit; and a cable connecting the camera head and the camera control unit with each other, wherein the camera control unit includes: a control portion which feeds a predetermined DC (Direct Current) voltage to the camera head, and wherein the camera head includes: an LVDS conversion driver portion which transmits an LVDS (Low Voltage Differential Signaling) signal to the camera control unit; a correction control portion which outputs a correction value for the LVDS signal; and an LVDS control portion which controls the LVDS conversion driver portion based on the correction value.

    摘要翻译： 根据本发明的一个方面，提供了一种相机头分离型相机装置，包括：相机头; 相机控制单元; 以及将相机头和相机控制单元彼此连接的电缆，其中所述照相机控制单元包括：将预定DC（直流）电压馈送到所述相机头的控制部分，并且其中所述相机头包括：LVDS 转换驱动器部分，其向相机控制单元发送LVDS（低电压差分信号）信号; 校正控制部分，输出LVDS信号的校正值; 以及LVDS控制部分，其基于校正值来控制LVDS转换驱动器部分。

    Method and apparatus for imaging
    9.
    发明授权
    Method and apparatus for imaging 有权
    成像方法和装置

    公开(公告)号：US08054351B2

    公开(公告)日：2011-11-08

    申请号：US12714191

    申请日：2010-02-26

    申请人： Takashi Tsuda

    发明人： Takashi Tsuda

    IPC分类号： H04N5/217

    CPC分类号： H04N9/045

    摘要： According to one embodiment, a shading correction circuit, which corrects for the influence of ambient light quantity shading, for input image light from three CCD sensors of R, G and B, based on a distance from the center of a screen. A shading correction circuit does not make correction for a maximum correction area which is out of a circle with a distance a from the central part of a screen, and corrects for the influence of ambient light quantity shading for a minimum correction area with a distance b from the central part of a screen, after calculating a square L2 of an address distance of each pixel of a correction object obtained by using a vertical distance and a horizontal distance from an address of the central part of a screen.

    摘要翻译： 根据一个实施例，一种阴影校正电路，其校正来自R，G和B的三个CCD传感器的输入图像光的环境光量阴影的影响，基于距离屏幕中心的距离。 阴影校正电路不对距离屏幕中心距离a的圆圈以外的最大校正区域进行校正，并且将距离b的最小校正区域的环境光量阴影的影响校正 在从屏幕的中心部分的地址利用垂直距离和水平距离计算校正对象的每个像素的地址距离的平方L2之后，从屏幕的中心部分。

    Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus
    10.
    发明授权
    Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus 失效

    公开(公告)号：US07079771B2

    公开(公告)日：2006-07-18

    申请号：US10272995

    申请日：2002-10-18

    申请人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

    发明人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

    IPC分类号： H04J14/02 ,  H04B10/04 ,  H01S3/00

    CPC分类号： H04J14/02 ,  H04B10/506 ,  H04B10/564 ,  H04B10/572

    摘要： The invention provides a wavelength multiplexing transmission apparatus includes a plurality of optical signal outputting sections for outputting optical signals having different wavelengths from each other, and a wavelength multiplexing section for wavelength multiplexing the optical signals outputted from the optical signal outputting sections and sending out a resulting optical signal. Each of the optical signal outputting sections includes a transmission light source driven by an electric signal for outputting an optical signal of a predetermined wavelength, and a wavelength filter capable of passing therethrough and sending out only an optical signal of the predetermined wavelength to be outputted from the transmission light source to prevent a wavelength drift of the optical signal outputted from the transmission light source. A variation of the wavelength of the transmission light source is detected, and the transmission light source is shut down in order to prevent otherwise possible crosstalk with another channel and prevent a further influence of the same.