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    Apparatus and methods for clock signal recovery and for jitter measurement relative to the recovered clock signal
    1.
    发明授权
    Apparatus and methods for clock signal recovery and for jitter measurement relative to the recovered clock signal 有权
    用于时钟信号恢复和抖动测量的装置和方法相对于恢复的时钟信号

    公开(公告)号：US07864908B2

    公开(公告)日：2011-01-04

    申请号：US10804671

    申请日：2004-03-18

    申请人： Katsuhiro Watanabe ,  Tetsuo Ogawa ,  Hiromi Nishizaka

    发明人： Katsuhiro Watanabe ,  Tetsuo Ogawa ,  Hiromi Nishizaka

    IPC分类号： H04L7/00

    CPC分类号： H04N17/004 ,  H04L1/205

    摘要： A recovered clock signal is simulated from an acquired external clock signal by use of an uncomplicated algorithm requiring few calculations. The recovered clock is usually used in an apparatus that receives external clock and external data signals and recovers the recovered clock signal from the external clock signal by use of a phase lock loop to process the external data according to the recovered clock. Apparatus according to the invention digitizes the external clock signal and stores resulting the time domain data in memories (step 48). It detects time domain data of edges of the stored external clock (step 50), and the detected time domain data of the edges are converted into frequency domain data (step 52). The frequency domain data are multiplied by the respective predetermined coefficients in different frequency domains (step 54). The resultant frequency domain data are restored to the time domain data (step 56) to obtain time domain data of the edges of the recovered clock signal. The recovered clock signal is used to measure jitter of the external clock and data signals relative to the recovered clock signal.

    摘要翻译： 通过使用不需要很少计算的不复杂算法，从获取的外部时钟信号中模拟恢复的时钟信号。 恢复的时钟通常用于接收外部时钟和外部数据信号的装置，并且通过使用锁相环从外部时钟信号恢复恢复的时钟信号，以根据恢复的时钟处理外部数据。 根据本发明的装置对外部时钟信号进行数字化并将时域数据存储在存储器中（步骤48）。 它检测所存储的外部时钟的边缘的时域数据（步骤50），并将所检测的边缘时域数据转换成频域数据（步骤52）。 将频域数据乘以不同频域中的各个预定系数（步骤54）。 将合成的频域数据恢复到时域数据（步骤56），以获得恢复的时钟信号的边缘的时域数据。 恢复的时钟信号用于测量相对于恢复的时钟信号的外部时钟和数据信号的抖动。

    Digital signal transmission apparatus
    3.
    发明授权
    Digital signal transmission apparatus 失效
    数字信号传输装置

    公开(公告)号：US06333802B1

    公开(公告)日：2001-12-25

    申请号：US09028788

    申请日：1998-02-24

    申请人： Tetsuo Ogawa ,  Yoshihiro Morioka ,  Kenichi Sawaguchi ,  Fumito Kuramochi

    发明人： Tetsuo Ogawa ,  Yoshihiro Morioka ,  Kenichi Sawaguchi ,  Fumito Kuramochi

    IPC分类号： H04B1012

    CPC分类号： H04N7/22 ,  H04B10/2504 ,  H04B10/50

    摘要： An optical transmitter converts serial hi-vision digital signals sent from a transmitting side peripheral device over a coaxial cable into serial digital optical signals to transmit the resulting signals over an optical fiber. An optical receiver receives the serial digital optical signals sent from the optical transmitter over the optical fiber to convert the signals into serial hi-vision digital signals to transmit the converted signals over a receiving side coaxial cable to a receiving side peripheral device. This enables transmission of digital signals to the receiving side peripheral device with suppressed signal deterioration without requiring a complex structure.

    摘要翻译： 光发射机将通过同轴电缆发送的发射侧外围设备的串行高分辨率数字信号转换为串行数字光信号，以通过光纤传输所得到的信号。 光接收机通过光纤接收从光发射机发送的串行数字光信号，以将信号转换成串行高清数字信号，以通过接收侧同轴电缆将转换的信号传输到接收侧外围设备。 这使得能够以抑制信号劣化的方式将数字信号发送到接收侧外围设备，而不需要复杂的结构。

    Video signal reproducing apparatus with two modes of keeping track of address
    4.
    发明授权
    Video signal reproducing apparatus with two modes of keeping track of address 失效
    视频信号再现装置，具有两种保存地址轨迹的方式

    公开(公告)号：US5016119A

    公开(公告)日：1991-05-14

    申请号：US391401

    申请日：1989-08-08

    申请人： Tetsuo Ogawa ,  Takao Abe ,  Toshiya Asai

    发明人： Tetsuo Ogawa ,  Takao Abe ,  Toshiya Asai

    IPC分类号： G11B27/00 ,  G11B27/30 ,  G11B27/32 ,  G11B27/34 ,  H04N5/7826 ,  H04N5/783 ,  H04N5/926 ,  H04N5/937

    CPC分类号： H04N5/937 ,  G11B27/005 ,  G11B27/3027 ,  G11B27/323 ,  G11B27/34 ,  H04N5/926 ,  H04N5/78266 ,  H04N5/783

    摘要： In an apparatus for use with a video tape having a longitudinal track in which an address signal is recorded and successive slant tracks in which a video signal and an information signal are recorded at predetermined intervals; a magnetic head unit reproduces the video signal, the information signal, and the address signal. The information signal is applied to a pulse generator for generating a control pulse signal, and an address indication circuit provides an address indication in response to the address signal or the control pulse signal. A control circuit is provided for coupling one or the other of the address signal and the control pulse signal to the address indication circuit selectively in response to the speed of movement of the tape.

    摘要翻译： 在与具有其中记录地址信号的纵向轨道的录像带一起使用的装置中，以预定间隔记录视频信号和信息信号的连续倾斜轨道; 磁头单元再现视频信号，信息信号和地址信号。 信息信号被施加到用于产生控制脉冲信号的脉冲发生器，并且地址指示电路响应于地址信号或控制脉冲信号提供地址指示。 提供控制电路，用于响应于磁带的移动速度选择性地将地址信号和控制脉冲信号中的一个或另一个耦合到地址指示电路。

    Servo for VTR drum motor with external reference signal phase modulation
    5.
    发明授权
    Servo for VTR drum motor with external reference signal phase modulation 失效
    伺服用于具有外部参考信号相位调制的VTR鼓式电机

    公开(公告)号：US4802032A

    公开(公告)日：1989-01-31

    申请号：US63800

    申请日：1987-06-23

    申请人： Kaichi Tatsuzawa ,  Takao Abe ,  Tetsuo Ogawa

    发明人： Kaichi Tatsuzawa ,  Takao Abe ,  Tetsuo Ogawa

    IPC分类号： G11B5/588 ,  G11B15/467 ,  G11B15/473 ,  G11B33/10 ,  G11B5/02

    CPC分类号： G11B33/10 ,  G11B15/4672 ,  G11B15/4733

    摘要： A servo circuit is provided for use with a reproducing apparatus wherein an information signal is reproduced from an elongated slant track formed on a tape which is wrapped on the periphery of a guide drum having a rotary head. The servo circuit includes a circuit for detecting an intermediate point of the length of the slant track and generating a timing signal at the detection of the intermediate point and a circuit for comparing the timing signal with a reference pulse to generate a control signal. A relative position of the slant track to the rotary head is controlled in accordance with the control signal.

    摘要翻译： 提供了一种用于再现装置的伺服电路，其中从形成在缠绕在具有旋转头的导向鼓的周边上的带上的细长倾斜轨道再现信息信号。 伺服电路包括用于检测倾斜磁道的长度的中间点并在检测中间点时产生定时信号的电路和用于将定时信号与参考脉冲进行比较以产生控制信号的电路。 根据控制信号控制倾斜轨道相对于旋转头的相对位置。

    Machining simulation method and machining simulation apparatus
    6.
    发明授权
    Machining simulation method and machining simulation apparatus 有权
    加工仿真方法和加工仿真装置

    公开(公告)号：US08175861B2

    公开(公告)日：2012-05-08

    申请号：US12427121

    申请日：2009-04-21

    申请人： Bin Huang ,  Xiaodong Tian ,  Tetsuo Ogawa ,  Bingyan Zhao

    发明人： Bin Huang ,  Xiaodong Tian ,  Tetsuo Ogawa ,  Bingyan Zhao

    IPC分类号： G06F7/48 ,  G06F17/50 ,  G06F9/44 ,  G06F19/00

    CPC分类号： G05B19/4068 ,  G05B2219/35506 ,  G05B2219/36251

    摘要： A machining simulation apparatus is arranged in a machine tool having a tool holding mechanism, a workpiece holding mechanism, a drive mechanism and a numerical controller, and provided with: an actual CCD camera for imaging a tool held by the tool holding mechanism and the workpiece holding mechanism not holding a workpiece to generate actual image data; a model data update processing section for generating model data relating to when moving the holding mechanisms based on the operation command received from the numerical controller and the model data of the holding mechanisms, tool and workpiece; a virtual image generation processing section for generating virtual image data of the tool and workpiece based on the generated model data; and a rendering processing section for generating composite image data by superimposing the virtual image on the actual image, and displaying the composite image data on a screen display device.

    摘要翻译： 机械仿真装置设置在具有工具保持机构，工件保持机构，驱动机构和数值控制器的机床中，并具有：实际的CCD摄像机，用于对由工具保持机构保持的工具和工件 保持机构不夹持工件以产生实际图像数据; 模型数据更新处理部分，用于根据从数字控制器接收到的操作命令和保持机构，工具和工件的模型数据，生成与何时移动保持机构有关的模型数据; 虚拟图像生成处理部，其基于生成的模型数据生成所述工具和工件的虚拟图像数据; 以及渲染处理部分，用于通过将虚拟图像叠加在实际图像上来生成合成图像数据，并将合成图像数据显示在屏幕显示装置上。

    Machine Tool Controller
    7.
    发明申请
    Machine Tool Controller 有权
    机床控制器

    公开(公告)号：US20080018287A1

    公开(公告)日：2008-01-24

    申请号：US11773441

    申请日：2007-07-05

    申请人： Tetsuo Ogawa

    发明人： Tetsuo Ogawa

    IPC分类号： G05B1/06

    CPC分类号： G05B19/416 ,  G05B19/4061 ,  G05B2219/35314 ,  G05B2219/35316 ,  G05B2219/43203

    摘要： In a machine tool controller (1): a position control unit (12) controls, based on an operational signal input from without during manual operation, a moving body's move-to point and moving speed; a memory (13) stores data modeling the moving body and any potentially interfering machine-tool structure; a travel-area checking unit (17) defines in the modeled structure speed-control regions obtained by displacing the structure's contour, generates, based on the defined speed control regions and on current moving-body position, data modeling the moving body as moved into its current position, to check whether the moving body will travel within a speed control region, and if so, sends to the position control unit a speed limit predefined for that speed control region. The position control unit controls the moving body to travel at speed limit if the operational-signal-directed moving speed exceeds the speed limit.

    摘要翻译： 在机床控制器（1）中：位置控制单元（12）基于从手动操作期间输入的操作信号控制移动体的移动点和移动速度; 存储器（13）存储建模移动体的数据和任何潜在的干扰机床结构; 行驶区域检查单元（17）在通过移动结构轮廓而获得的模型化结构速度控制区域中限定，基于所定义的速度控制区域和当前移动体位置，生成移动体的数据建模 其当前位置，以检查移动体是否在速度控制区域内行进，如果是，则向位置控制单元发送针对该速度控制区域预定义的速度限制。 如果操作信号导向的移动速度超过速度限制，则位置控制单元控制移动体在速度限制下行进。

    Computer and method providing for illumination of keyboard
    9.
    发明授权
    Computer and method providing for illumination of keyboard 失效
    提供键盘照明的计算机和方法

    公开(公告)号：US06911971B2

    公开(公告)日：2005-06-28

    申请号：US10064902

    申请日：2002-08-27

    申请人： Michio Suzuki ,  Tetsuo Ogawa

    发明人： Michio Suzuki ,  Tetsuo Ogawa

    IPC分类号： G06F1/16 ,  G06F3/02 ,  H01H3/12 ,  H01H9/18 ,  H01H13/02 ,  H01H13/14 ,  H01H13/70 ,  G09G5/00

    CPC分类号： G06F1/1616 ,  G06F1/1662 ,  G06F3/0202 ,  H01H2219/052

    摘要： The computer of the present invention is provided with a main body on which keys to be operated by the user are disposed and a display unit that displays an image in accordance with each operation executed for the main body. Each key disposed on the main body is composed of its body having a key top and a light accumulator recess opened in the key top. The light accumulator recess is formed in a manner indicative of the character or symbol associated with such key. The light accumulator recess has embedded in it a light accumulating material such that the character or symbol associated with the key is illuminated by the residual light emission of the light accumulating material when the computer is operated in a location with little or no ambient light.

    摘要翻译： 本发明的计算机设置有一个主体，用于使用者操作的键被设置在该主体上，并且显示单元根据对主体执行的每个操作来显示图像。 设置在主体上的每个键由其主体具有键顶和在键顶部开口的蓄光器凹部。 蓄光器凹部以指示与该键相关联的字符或符号的方式形成。 蓄光器凹部嵌入其中的蓄光材料，使得当计算机在具有很少或不具有环境光的位置操作时，与键相关联的字符或符号被蓄积材料的残余光发射照射。