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公开(公告)号：US06490807B1
公开(公告)日：2002-12-10
申请号：US09649861
申请日：2000-08-28
IPC分类号： G06K700
CPC分类号： G01D5/24476 , G01B7/003 , G01D5/2457
摘要： A stable signal is output in which when there is no movement, unstable output change does not occur, and an output change exceeding a predetermined limit does not occur. The variation &Dgr;PH in the output angle signal PH to be output is subjected to hysteresis and through rate limitations with respect to the variation APF in the input angle signal input thereto. When the variation APF in the input signal is in a hysteresis range of −Hys (Hys+SR), a through rate limitation is effected to thereby clip the variation in the output angle signal to SR. When the variation &Dgr;PF is in other regions, the output follows the input linearly with the output delayed by the hysteresis quantity.
摘要翻译： 输出稳定的信号，其中当没有移动时，不会发生不稳定的输出变化，并且不发生超过预定极限的输出变化。 要输出的输出角度信号PH中的变化DELTAPH相对于输入角输入角信号PH的变化APF经受迟滞和速率限制。 当输入信号中的变化APF处于-Hys
（Hys + SR），实现通过速率限制，从而将输出角度信号的变化剪切到SR。 当变化DELTAPF在其他区域时，输出线性跟随输入，延迟滞后量。 -
公开(公告)号：US06772101B1
公开(公告)日：2004-08-03
申请号：US09649539
申请日：2000-08-28
IPC分类号： G01B700
CPC分类号： G01D5/24476 , G01D5/24409 , G01D5/2457
摘要： Angle data ranging from 0° to 360° obtained by performing polar conversion with respect to a periodic signal are input to a low pass filter having: a phase accumulator for outputting smoothed angle data; a phase comparator for obtaining a phase error between the angle data and the smoothed angle data; a first amplifier for amplifying the phase error; a second amplifier for further amplifying the phase error; an integrator for integrating the phase error PE amplified by the second amplifier to obtain a velocity error; and an adder for adding the phase error amplified by the first amplifier and the velocity error to determine a control voltage. The phase accumulator controls the frequency of the smoothed angle data so that the phase error is zero based on the control voltage to remove a high frequency component in the angle data.
摘要翻译： 通过对周期信号执行极化转换而获得的0°至360°范围内的角度数据被输入到具有：用于输出平滑角度数据的相位累加器的低通滤波器; 用于获得角度数据和平滑角度数据之间的相位误差的相位比较器; 用于放大相位误差的第一放大器; 用于进一步放大相位误差的第二放大器; 积分器，用于积分由第二放大器放大的相位误差PE，以获得速度误差; 以及加法器，用于将由第一放大器放大的相位误差和速度误差相加以确定控制电压。 相位累加器控制平滑角度数据的频率，使得基于控制电压的相位误差为零，以去除角度数据中的高频分量。
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公开(公告)号：US06470292B1
公开(公告)日：2002-10-22
申请号：US09649335
申请日：2000-08-28
IPC分类号： G01C900
CPC分类号： G01D5/2457
摘要： A position detector detects the position of a detector section relative to a record medium having recorded thereon a periodic position signal. The detector section has two detectors that produce first and second detection signals that are polar converted and processed, based on the number of divisions in a quadrant of the periodic position signal.
摘要翻译： 位置检测器检测检测器部分相对于其上记录有周期性位置信号的记录介质的位置。 检测器部分具有两个检测器，其基于周期位置信号的象限中的分割数量产生极性转换和处理的第一和第二检测信号。
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公开(公告)号：US5970432A
公开(公告)日：1999-10-19
申请号：US922527
申请日：1997-09-03
申请人： Shigeru Ishimoto , Toyohiko Matsuda
发明人： Shigeru Ishimoto , Toyohiko Matsuda
CPC分类号： G01D5/24409
摘要： In apparatus and method for measuring a displacement of an object to be measured, a magnitude of the displacement is derived on the basis of a difference in periods of a phase modulated signal and a reference signal, a ratio between the periods of a basic clock and of an interpolation clock which is varied according to the magnitude of the displacement, a clock signal whose period is a multiplication of a period of the basic clock by the ratio as a multiplier, a pulse train signal is created whose number of pulses are given by the magnitude of the displacement and supplied to an A/B phase converter.
摘要翻译： 在用于测量被测量物体的位移的装置和方法中，基于相位调制信号和参考信号的周期差，导出基准时钟的周期与基准时钟的周期之间的比率 根据位移幅度而变化的内插时钟，其周期是基本时钟的周期乘以作为乘数的比率的时钟信号，产生脉冲序列信号，其脉冲数由 位移的大小并提供给A / B相位转换器。
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公开(公告)号：US6031885A
公开(公告)日：2000-02-29
申请号：US922525
申请日：1997-09-03
申请人： Shigeru Ishimoto , Toyohiko Matsuda
发明人： Shigeru Ishimoto , Toyohiko Matsuda
CPC分类号： G01D5/24404
摘要： A displacement detecting apparatus outputs a displacement information signal obtained by interpolating a phase modulation. A direction block obtains a direction signal indicative whether the cycle of the phase modulation signal is longer than the cycle of the reference signal. A phase difference block obtains the number of the interpolation clock pulses which number corresponds to a phase difference between the phase modulation signal and the reference signal. An up/down counter counts to an interpolation number upon receiving the direction signal and a pulse train corresponding to the phase difference. The presetting block presets the number of pulses corresponding to the phase difference in the up/down counter. The displacement information block outputs a Glay code converted from continuous 2 bits of the count value of the up/down counter as displacement information.
摘要翻译： 位移检测装置输出通过内插相位调制而获得的位移信息信号。 方向块获得指示相位调制信号的周期是否长于参考信号的周期的方向信号。 相位差块获得与相位调制信号和参考信号之间的相位差对应的内插时钟脉冲的数量。 上/下计数器在接收方向信号和对应于相位差的脉冲串时计数到插值数。 预置块预设与向上/向下计数器中的相位差对应的脉冲数。 位移信息块输出从上/下计数器的计数值的连续2位转换的Glay码作为位移信息。
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6.发明授权Orthogonal transform encoder using DC component to control quantization step size 失效使用直流分量的正交变换编码器来控制量化步长
公开(公告)号：US5369439A
公开(公告)日：1994-11-29
申请号：US955829
申请日：1992-10-02
CPC分类号： H04N19/18 , H04N19/126 , H04N19/154 , H04N19/176 , H04N19/186 , H04N19/124 , H04N19/146 , H04N19/149 , H04N19/15 , H04N19/60
摘要： According to orthogonal transformation coefficients obtained through orthogonal transformation, the degree of influence on visual sensation is detected. Depending on the degree of influence on visual sensation, a quantization step size is controlled so as to assign a greater amount of codes to each block of which image quality deterioration is conspicuous and a smaller amount of codes to each block of which image quality deterioration is less conspicuous.
摘要翻译： 根据通过正交变换获得的正交变换系数，检测对视觉的影响程度。 根据对视觉的影响程度，控制量化步长，以便对每个图像质量劣化显着的区块分配更多的代码量，并且对每个图像质量劣化的块进行代码量较小 不明显
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7.发明授权Method and apparatus for transmitting, encoding and decoding video signal and recording/reproducing method of optical disc 失效用于发送，编码和解码图像信号的方法和装置，以及用于光盘的记录和再现方法公开(公告)号：US06614846B1
公开(公告)日：2003-09-02
申请号：US09117793
申请日：1998-12-17
申请人： Yuji Fujiwara , Masakazu Nishino , Seiichi Takeuchi , Kazuhiro Wake , Akifumi Ide , Toyohiko Matsuda , Masaaki Kobayashi , Yoshitomi Nagaoka
发明人： Yuji Fujiwara , Masakazu Nishino , Seiichi Takeuchi , Kazuhiro Wake , Akifumi Ide , Toyohiko Matsuda , Masaaki Kobayashi , Yoshitomi Nagaoka
IPC分类号： H04B166
CPC分类号： H04N9/8042 , G06T9/008 , H04N5/85 , H04N9/7973 , H04N19/30 , H04N19/53
摘要： The present invention includes a motion vector detector for detecting motion vectors using a first image signal of high resolution; a resolution reducer for creating a second image signal of low resolution from the first image signal; an image signal interpolater for interpolating the second image signal so that it has the same number of pixels as the first image signal, thereby creating an interpolated signal; a differentiator for determining a differential between the first image signal and the interpolated signal; and an encoder for using the motion vectors to high-efficiency-encode the differential signal. Thus, by encoding two types of image signals of different resolutions, the present invention improves the accuracy of the motion vectors during the encoding of the high-resolution signal and reduces the rate after encoding due to the encoding of the differential signal.
摘要翻译： 本发明包括使用高分辨率的第一图像信号来检测运动矢量的运动矢量检测器; 分辨率降低器，用于从所述第一图像信号产生低分辨率的第二图像信号; 图像信号内插器，用于内插第二图像信号，使得其具有与第一图像信号相同数量的像素，从而产生内插信号; 用于确定第一图像信号和内插信号之间的差分的微分器; 以及用于使用运动矢量对差分信号进行高效编码的编码器。 因此，通过编码不同分辨率的两种类型的图像信号，本发明在高分辨率信号的编码期间提高了运动矢量的精度，并且由于差分信号的编码而降低了编码之后的速率。
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8.发明授权Video signal processing method and apparatus for use with plural television systems 失效用于多个电视系统的视频信号处理方法和装置
公开(公告)号：US5646695A
公开(公告)日：1997-07-08
申请号：US597322
申请日：1996-02-05
IPC分类号： H04N5/907 , H04N5/92 , H04N9/79 , H04N9/804 , H04N11/04 , H04N19/00 , H04N19/42 , H04N19/423 , H04N19/88 , H04N5/46
CPC分类号： H04N9/7921 , H04N9/8042 , H04N9/8047
摘要： In shuffling used as an efficient coding method for an input digital video signal, input digital television signals of different standards are judged in an input judging circuit, the judged information is sent out into a memory write control circuit and a memory read control circuit. The memory write control circuit determines the offset value of the vertical address according to the judgement signal, and writes the input signal at a position corresponding to the screen of the determined shuffling region of the shuffling range corresponding to each signal in the shuffling memory, or writes the block out of the shuffling range into the shuffling memory according to the specified control method in the vacant region of the shuffling range. The memory read control circuit changes over the offset value of the vertical address to be read out from the memory and the address control according to the judgement information.
摘要翻译： 在用作输入数字视频信号的有效编码方法的混洗中，在输入判断电路中判断输入不同标准的数字电视信号，将判断信息发送到存储器写入控制电路和存储器读取控制电路。 存储器写入控制电路根据判断信号确定垂直地址的偏移值，并将输入信号写入对应于在混洗存储器中与每个信号对应的混洗范围的确定的混洗区域的屏幕的位置，或 根据在混洗范围的空白区域中的指定控制方法将块从混洗范围写入混洗存储器。 存储器读取控制电路根据判断信息改变要从存储器读出的垂直地址的偏移值和地址控制。
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9.发明授权Coding apparatus for converting digital signals into ternary signals whose DC component is equal to zero 失效将数字信号转换为直流分量等于零的信号的编码装置
公开(公告)号：US5130862A
公开(公告)日：1992-07-14
申请号：US560271
申请日：1990-07-26
IPC分类号： H03M5/18 , H04L25/497
CPC分类号： H03M5/18 , H04L25/497
摘要： By transforming a duobinary signal, a value of -1 cannot appear again after a value of zero following -1 as shown in a string of -1.fwdarw.0.fwdarw.-1 and a value of 1 cannot appear again after a value of zero following 1 as shown in a string of 1.fwdarw.0.fwdarw.1. Narrow-band transmission is made possible by the fact that the direct current (DC) component of a duobinary signal can be eliminated and reproducible original information can be recorded by discriminating its even level as a one (1) and its odd level as zero (0). Since the DC component can be eliminated, electromagnetic conversion systems are subjected to less distortion, leading to a reduction in the probability of coding errors.
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