公开(公告)号：US06597167B2

公开(公告)日：2003-07-22

申请号：US09911204

申请日：2001-07-23

申请人： Toshiharu Miyata ,  Tetsuro Kiriyama

发明人： Toshiharu Miyata ,  Tetsuro Kiriyama

IPC分类号： G01B714

CPC分类号： G01D5/2073 ,  H01F5/003 ,  H01F27/365

摘要： An encoder unit is disposed facing a scale. The encoder unit is constructed such that a processing circuit and a read head are integrally formed on one and the same semiconductor substrate. This construction results in size reduction and integral formation of the encoder unit.

摘要翻译： 编码器单元面向刻度尺设置。 编码器单元被构造成使得处理电路和读取头一体地形成在同一半导体衬底上。 这种结构导致编码器单元的尺寸减小和整体形成。

公开(公告)号：US06636035B2

公开(公告)日：2003-10-21

申请号：US09804300

申请日：2001-03-13

申请人： Tetsuro Kiriyama ,  Toshiharu Miyata ,  Nobuyuki Hayashi ,  Kouji Sasaki ,  Yoshiaki Shiraishi

发明人： Tetsuro Kiriyama ,  Toshiharu Miyata ,  Nobuyuki Hayashi ,  Kouji Sasaki ,  Yoshiaki Shiraishi

IPC分类号： G01B700

CPC分类号： G01D5/2086 ,  G01D3/08

摘要： In an electronic caliper, a detecting circuit 112 detects displacement of a grid with respect to a scale, on the basis of a signal from a transducer 110. A CPU 114 displays the detected position on a display device 124. The CPU 114 performs error detection on the transducer, only when the relative speed of the grid with respect the scale is zero, or becomes equal to or smaller than a predetermined value. Since error detection is performed only at a predetermined timing, power consumption can be reduced.

摘要翻译： 在电子卡尺中，检测电路112基于来自换能器110的信号来检测格子相对于刻度的位移.CPU 114在显示装置124上显示检测到的位置.CPU 114执行错误检测 只有当网格相对于刻度的相对速度为零时，才能变为等于或小于预定值。 由于仅在预定定时执行错误检测，所以能够降低功耗。

公开(公告)号：US06522129B2

公开(公告)日：2003-02-18

申请号：US09803913

申请日：2001-03-13

申请人： Toshiharu Miyata ,  Nobuyuki Hayashi ,  Kouji Sasaki ,  Tetsuro Kiriyama

发明人： Toshiharu Miyata ,  Nobuyuki Hayashi ,  Kouji Sasaki ,  Tetsuro Kiriyama

IPC分类号： G01B702

CPC分类号： G01D5/2053

摘要： An induction type tranducer is formed to be a substrate having a multilayer structure. The substrate has a multilayer structure including six layers, a first layer through sixth layer. An exciting coil is formed at the first layer. Detecting coils are formed at the second layer and the third layer. A wiring layer is formed at the fifth layer at the opposite side of the scale from the core layer. A signal processing IC is formed at the sixth layer. A magnetic shield layer, which insulates magnetic flux from the exciting coil, is formed at the fourth layer between the exciting coil and the signal processing IC.

摘要翻译： 感应式换能器形成为具有多层结构的基板。 衬底具有包括六层的第一层至第六层的多层结构。 在第一层形成励磁线圈。 检测线圈形成在第二层和第三层。 布线层形成在刻度尺与核心层相对的第五层处。 在第六层形成信号处理IC。 在励磁线圈和信号处理IC之间的第四层形成有使来自励磁线圈的磁通绝缘的磁屏蔽层。

公开(公告)号：US5999113A

公开(公告)日：1999-12-07

申请号：US59338

申请日：1998-04-14

申请人： Tetsuro Kiriyama ,  Mikiya Teraguchi

发明人： Tetsuro Kiriyama ,  Mikiya Teraguchi

IPC分类号： G01D5/245 ,  G01D5/244 ,  G06F17/17 ,  H03M1/20 ,  H03M1/30 ,  H03M1/48

CPC分类号： H03M1/207 ,  G01D5/24409 ,  H03M1/303

摘要： Output of an encoder are sampled by A/D converters 11a and 11b to be converted to N bits A-phase and B-phase digital data DA and DB. In a look-up table memory 12, reference phase angle data of phase divisions and average gradient vectors of changes in phase angle data within the phase divisions are stored, the phase divisions being addressed by the high order NU bits of data DA and DB. An arithmetic circuit 13 determines a vector inner product of an average gradient vector and phase-interpolating data represented by the low order NL bits of the data DA and DB to add the resultant to a phase angle data, thereby outputting an interpolated phase angle data.

摘要翻译： 编码器的输出由A / D转换器11a和11b采样，以被转换成N位A相和B相数字数据DA和DB。 在查找表存储器12中，相位分割的参考相位角数据和相位分割内的相位角数据的变化的平均梯度向量被存储，相位分割由数据DA和DB的高阶NU位寻址。 算术电路13确定由数据DA和DB的低阶NL位表示的平均梯度矢量和相位插值数据的向量内积，以将结果加到相位角数据上，从而输出内插相位角数据。

公开(公告)号：US07485845B2

公开(公告)日：2009-02-03

申请号：US11566433

申请日：2006-12-04

申请人： Toru Yaku ,  Tetsuro Kiriyama

发明人： Toru Yaku ,  Tetsuro Kiriyama

IPC分类号： G01D5/34

CPC分类号： G01D5/34746

摘要： A three-grating type photoelectric encoder includes a second grating formed on a scale and first and third gratings disposed on a side of a detector. A part of at least the first grating is shifted in a direction of a measurement axis by P/(2n) (wherein P is a grating pitch, n is the order of a harmonic component to be removed) in order to remove a harmonic component of the nth order. This encoder can be improved with high accuracy by removing harmonic components without increasing manufacturing costs.

摘要翻译： 三光栅型光电编码器包括形成在刻度上的第二光栅和设置在检测器一侧的第一和第三光栅。 至少第一光栅的一部分在测量轴的方向上偏移P /（2n）（其中P是光栅间距，n是要去除的谐波分量的次数），以便去除谐波分量 的第n个顺序。 该编码器可以通过去除谐波分量而高精度地提高，而不增加制造成本。

公开(公告)号：US07250881B2

公开(公告)日：2007-07-31

申请号：US11248365

申请日：2005-10-12

申请人： Tetsuro Kiriyama ,  Ryuichi Koiso ,  Toshirou Yoshinaka

发明人： Tetsuro Kiriyama ,  Ryuichi Koiso ,  Toshirou Yoshinaka

IPC分类号： H03M1/48

CPC分类号： G01D5/2448 ,  G01D5/24452 ,  G01D5/2449 ,  G01D5/24495

摘要： An offset error, an amplitude error, a phase error and a third harmonic component contained in two-phase sinusoidal signals are removed using relatively simple digital computations. An offset error contained in two-phase sinusoidal signals with a phase difference output from an encoder is detected and corrected. Then, an amplitude error contained in the offset-corrected two-phase sinusoidal signals is detected and corrected. Subsequently, a phase error contained in the amplitude-corrected two-phase sinusoidal signals is detected and corrected. Further, a third harmonic distortion contained in the phase-corrected two-phase sinusoidal signals is detected and corrected. Each correction step includes detecting an error from an ideal Lissajous waveform contained in the corrected two-phase sinusoidal signals, and adding the detected error to an accumulatively added last value to yield a new correction coefficient, thereby dynamically updating the correction coefficient.

摘要翻译： 使用相对简单的数字计算来消除两相正弦信号中包含的偏移误差，振幅误差，相位误差和三次谐波分量。 检测并纠正从编码器输出的相位差的两相正弦信号中包含的偏移误差。 然后，检测并校正偏移校正的两相正弦信号中包含的振幅误差。 随后，检测并纠正在幅度校正的两相正弦信号中包含的相位误差。 此外，检测并校正包含在相位校正的两相正弦信号中的三次谐波失真。 每个校正步骤包括从包含在校正的两相正弦信号中的理想的李萨如波形中检测误差，并将检测到的误差加到累加的最后值，以产生新的校正系数，从而动态地更新校正系数。

公开(公告)号：US20070035417A1

公开(公告)日：2007-02-15

申请号：US11461556

申请日：2006-08-01

申请人： Tetsuro Kiriyama ,  Ryuichi Koiso ,  Toshirou Yoshinaka

发明人： Tetsuro Kiriyama ,  Ryuichi Koiso ,  Toshirou Yoshinaka

IPC分类号： H03M1/22

CPC分类号： H03M1/207 ,  G01D5/24404 ,  H03M1/303

摘要： Two-phase sinusoidal signals QA, QB output from an encoder are interpolated by sample-and-hold (S/H) circuits and A/D conversion (ADC) circuits, and data D is output in accordance with a data request signal RQ from exterior. For this interpolation of encoder output, a direction discrimination up/down counter is arranged near a two-phase square-wave uniform pulse generating circuit, and the data D is latched and output using a signal which is obtained by delaying the data request signal RQ. This can reduce synchronization errors between the data request signal RQ from exterior and the interpolated data, with an improvement in dynamic precision.

摘要翻译： 通过采样保持（S / H）电路和A / D转换（ADC）电路对编码器输出的两相正弦信号QA，QB进行内插，并根据数据请求信号RQ输出数据D 外观。 对于编码器输出的插值，在两相方波均匀脉冲发生电路附近设置方向鉴别向上/向下计数器，并且使用通过延迟数据请求信号RQ获得的信号来锁存和输出数据D 。 这可以减少来自外部的数据请求信号RQ和内插数据之间的同步误差，同时具有动态精度的提高。

公开(公告)号：US07109900B2

公开(公告)日：2006-09-19

申请号：US11248669

申请日：2005-10-12

申请人： Tetsuro Kiriyama ,  Ryuichi Koiso ,  Toshirou Yoshinaka

发明人： Tetsuro Kiriyama ,  Ryuichi Koiso ,  Toshirou Yoshinaka

IPC分类号： H03M1/48

CPC分类号： G01D5/24452 ,  G01D5/2448 ,  G01D5/2449

摘要： A third harmonic distortion corrector is equipped for correcting a third harmonic distortion contained in a two-phase sinusoidal signals with different phases output from an encoder. A third harmonic calculator/detector calculates the amplitude a3 and the phase φ3 of the third harmonic using Fourier analysis, based on change in radius r of the Lissajous waveform output from a r-θ converter. The third harmonic distortion corrector corrects the third harmonic distortion of the two-phase sinusoidal signal A4, B4 based on the amplitude a3 and the phase φ3 of the third harmonic calculated.

摘要翻译： 三次谐波失真校正装置用于校正包含在从编码器输出的不同相位的两相正弦信号中的三次谐波失真。 三次谐波计算器/检测器基于傅立叶分析计算三次谐波的振幅a 3 3和相位φ3，基于由Lissajous波形输出的半径r的变化 一个r-θ转换器。 三次谐波失真校正器基于第三次谐波失真校正器的幅度a 3 3和3相位φ3 3校正两相正弦信号A 4，B 4的三次谐波失真。 谐波计算。

公开(公告)号：US20060097141A1

公开(公告)日：2006-05-11

申请号：US11257895

申请日：2005-10-25

申请人： Tetsuro Kiriyama ,  Toru Yaku ,  Shingo Nihommori

发明人： Tetsuro Kiriyama ,  Toru Yaku ,  Shingo Nihommori

IPC分类号： G01D5/34

CPC分类号： G01D5/38 ,  G01D5/34715

摘要： A photoelectric encoder is provided, which emits light from a light source to a main scale and an index scale that can relatively move with respect to each other and obtains a light-receiving signal by interaction between the main scale and the index scale. The photoelectric encoder uses as the light source an incoherent semiconductor light source (white LED) in which a full width at half maximum of an emission spectrum is wider than that of a monochromatic semiconductor light source. Thus, it is possible to reduce an effect of a gap change on an output signal of the encoder and make positional adjustment easier, thereby improving misalignment characteristics.

摘要翻译： 提供了一种光电编码器，其从光源发射到主尺度的光，以及可以相对于彼此相对移动的指标，并通过主刻度和指标之间的相互作用获得光接收信号。 光电编码器使用发光光谱的半值全宽比单色半导体光源宽的非相干半导体光源（白色LED）作为光源。 因此，可以减小间隙变化对编码器的输出信号的影响，并且使位置调整更容易，从而提高不对准特性。

公开(公告)号：US5485468A

公开(公告)日：1996-01-16

申请号：US943548

申请日：1992-09-11

申请人： Tetsuro Kiriyama ,  Mahito Unno

发明人： Tetsuro Kiriyama ,  Mahito Unno

IPC分类号： G01B21/00 ,  G01D5/245 ,  H03M1/10 ,  H03M1/14 ,  H03M1/24 ,  H03M1/30 ,  G06F11/00 ,  H03M1/22 ,  H03M13/00

CPC分类号： H03M1/1076 ,  H03M1/143 ,  H03M1/24 ,  H03M1/30

摘要： A data output encoder capable of having its state of retaining internal error information and self-diagnostic information reset without recourse to removing power or furnishing a dedicated signal line. A reset pulse generator monitors the changing status of an externally provided output request signal. When the signal status reaches a predetermined pattern, the reset pulse generator generates reset pulses that cause an RS flip-flop circuit to reset the state in which the internal error information and self-diagnostic information are retained.

摘要翻译： 一种数据输出编码器，其能够具有保持内部错误信息和自诊断信息复位的状态，而不需要去除功率或提供专用信号线。 复位脉冲发生器监视外部提供的输出请求信号的变化状态。 当信号状态达到预定模式时，复位脉冲发生器产生复位脉冲，使复位脉冲使得RS触发器电路复位保持内部错误信息和自诊断信息的状态。