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21. 发明授权

US07973583B2 A/B-phase signal generator, RD converter and angle detection unit 有权
标题翻译： A / B相信号发生器，RD转换器和角度检测单元
公开(公告)号：US07973583B2
公开(公告)日：2011-07-05
申请号：US12495763
申请日：2009-06-30
申请人： Hisashi Nishimura , Kenichi Nakazato
发明人： Hisashi Nishimura , Kenichi Nakazato
IPC分类号： G06F1/04 , H03K3/00
CPC分类号： G01D5/24476 , H03M1/485
摘要： An A/B-phase signal generator wherein an up/down count unit 52C counts up by an up-count command or counts down by a down-count command at fixed intervals, an angle comparison unit 51 compares the count result ACNT of up/down count unit 52C with an input rotation angle θ and generates a count request, which is an up-count request or a down-count request, a count request comparison unit 52B compares a previous count request with a next count request and generates an up-count command or a down-count command only when the previous count request and the next count request are both up-count requests or down-count requests, respectively, and an A/B-phase pulse generator 53 receives a least significant bit and a second least significant bit of up/down count unit 52C and generates and outputs an A-phase pulse signal and a B-phase pulse signal.
摘要翻译： A / B相信号发生器，其中上/下计数单元52C以递增计数命令向上计数或以固定间隔的递减计数命令递减计数，角度比较单元51将计数结果ACNT与上/ 向下计数单元52C，具有输入旋转角度＆amp; 并产生一个计数请求，该计数请求是递增计数请求或递减计数请求，计数请求比较单元52B将先前的计数请求与下一个计数请求进行比较，并且仅产生向上计数命令或递减计数命令当先前的计数请求和下一个计数请求分别是递增计数请求或递减计数请求时，A / B相脉冲发生器53接收最小有效位和上/下计数的第二最低有效位单元52C生成并输出A相脉冲信号和B相脉冲信号。

22. 发明授权

US07859254B2 Clock generation circuit, analog-digital angle converter using the same, and angle detection apparatus 有权
标题翻译：时钟发生电路，使用模拟数字角度转换器和角度检测装置
公开(公告)号：US07859254B2
公开(公告)日：2010-12-28
申请号：US12319631
申请日：2009-01-09
申请人： Kenichi Nakazato , Hisashi Nishimura
发明人： Kenichi Nakazato , Hisashi Nishimura
IPC分类号： G01B7/30
CPC分类号： G01D5/2451 , H03M1/0624 , H03M1/485
摘要： Two-phase resolver signals output from a rotation angle detector are squared by first and second squaring circuits. The squared signals are added by an adding circuit. The DC component of the output signal from the adding circuit is removed by a filter. The output signal from the filter is compared with a reference potential by a comparator to generate a rectangular-wave signal. The phase of the rectangular-wave signal is corrected a phase shifter. The frequency of the output signal from the phase shifter is divided by 2 by a frequency dividing circuit in synchronization with an excitation signal supplied to the rotation angle detector to generate a synchronous clock.
摘要翻译：从旋转角度检测器输出的两相分解器信号由第一和第二平方电路平方。平方信号由加法电路相加。来自加法电路的输出信号的直流分量由滤波器去除。来自滤波器的输出信号通过比较器与参考电位进行比较，以生成矩形波信号。矩形波信号的相位被校正为移相器。来自移相器的输出信号的频率由分频电路与提供给旋转角度检测器的激励信号同步地除以2，以产生同步时钟。

23. 发明授权

US07567733B2 Image resolution conversion apparatus 有权
标题翻译：图像分辨率转换装置
公开(公告)号：US07567733B2
公开(公告)日：2009-07-28
申请号：US11700951
申请日：2007-02-01
申请人： Hisashi Nishimura
发明人： Hisashi Nishimura
IPC分类号： G06K9/32
CPC分类号： G06T3/4007
摘要： In an image resolution conversion apparatus, a region-determining section establishes an initial value used for determining a region where a new pixel is to be generated based on the number of pixels in a non-line direction included in a pixel group used for converting the resolution attribute of fields, and a resolution conversion magnification ratio. The region-determining section accumulates an integration parameter corresponding to the resolution conversion magnification ratio onto the obtained initial values under the predetermined condition. The region-determining section outputs: a region-control signal; and the newly-established-pixel-position signal, successively based on the accumulation result.
摘要翻译：在图像分辨率转换装置中，区域确定部分根据包括在用于转换的像素组中的非线性方向上的像素数量建立用于确定要生成新像素的区域的初始值字段的分辨率属性和分辨率转换放大率。区域确定部分在预定条件下将对应于分辨率转换倍率的积分参数累积到获得的初始值上。区域确定部分输出：区域控制信号; 和新建立的像素位置信号。

24. 发明授权

US07541951B2 Tracking loop type digital angle converter and angle/digital converting apparatus 有权
标题翻译：跟踪环型数字角度转换器和角度/数字转换装置
公开(公告)号：US07541951B2
公开(公告)日：2009-06-02
申请号：US12072338
申请日：2008-02-25
申请人： Hisashi Nishimura
发明人： Hisashi Nishimura
IPC分类号： H03M1/48
CPC分类号： H03L7/08 , G01D5/24466 , H03M1/485
摘要： A tracking loop type digital angle converter that operates so that a deviation between input and output angles always becomes zero by feeding back the output angle to the input angle, wherein in order to eliminate a case where a control deviation decreases an angle error between the input and output angles is in the vicinity of 180°, i.e., where response becomes low, there are provided a detected signal sign judging section (41) that judges signs of rotation detection signals to determine a quadrant where the input angle exists, and an output angle correcting section (42) for comparing an angle region of the output angle and the quadrant of the input angle to detect a state where the angle error is excessive, judging that the control response is low and carrying out a process for compensating the output angle.
摘要翻译：跟踪环型数字角度转换器，其通过将输出角反馈到输入角度而使输入和输出角之间的偏差总是变为零，其中为了消除控制偏差减小输入之间的角度误差的情况并且输出角度在180°附近，即，在响应变低的情况下，提供了一个检测信号符号判断部分（41），其判断旋转检测信号的符号以确定存在输入角度的象限，以及输出角度校正部分（42），用于比较输出角度的角度区域和输入角度的象限，以检测角度误差过大的状态，判断出控制响应低，并执行用于补偿输出角度的处理。

25. 发明授权

US08004276B2 Reference signal generation circuit, angle converter, and angle detection apparatus 有权
标题翻译：参考信号发生电路，角度转换器和角度检测装置
公开(公告)号：US08004276B2
公开(公告)日：2011-08-23
申请号：US12317094
申请日：2008-12-19
申请人： Hisashi Nishimura , Kenichi Nakazato
发明人： Hisashi Nishimura , Kenichi Nakazato
IPC分类号： G01B7/30
CPC分类号： H03M1/0836 , H03M1/485
摘要： A reference signal generation circuit generates a reference signal used in synchronous detection for removing an excitation signal component in an angle calculation section that converts a detection angle θ obtained from two-phase resolver detection signals output from a resolver, to a digital output angle φ. The reference signal generation circuit includes a first multiplier, a second multiplier, and an adder. The first multiplier multiplies one of the resolver detection signals sin θ sin(ωt+Δω) by the sine value sin φ of the digital output angle φ obtained from the angle calculation section. The second multiplier multiplies the other resolver detection signal cos θ sin(ωt+Δω) by the cosine value cos φ of the digital output angle φ obtained from the angle calculation section. The adder adds the output of the first multiplier and the output of the second multiplier to output the sum signal sin(ωt+Δω) as the reference signal.
摘要翻译：参考信号生成电路生成用于去除角度运算部中的激励信号成分的同步检测中使用的参考信号，该角度计算部转换检测角度; 从从分解器输出的两相分解器检测信号获得到数字输出角度＆phgr。参考信号发生电路包括第一乘法器，第二乘法器和加法器。第一乘法器乘以解算器检测信号sin＆amp; thetas之一; sin（ωt+＆Dgr;ω）乘以正弦值sin＆phgr; 的数字输出角度从角度计算部获得。第二乘法器将其他解算器检测信号cos＆amp; sin（ωt+＆Dgr;ω）乘余弦值cos＆phgr; 的数字输出角度从角度计算部获得。加法器将第一乘法器的输出和第二乘法器的输出相加，以输出和信号sin（ωt+＆Dgr;ω）作为参考信号。

26. 发明授权

US07450784B2 Image resolution converting device 有权
标题翻译：图像分辨率转换装置
公开(公告)号：US07450784B2
公开(公告)日：2008-11-11
申请号：US11213429
申请日：2005-08-29
申请人： Hisashi Nishimura
发明人： Hisashi Nishimura
IPC分类号： G06K9/32
CPC分类号： G06T3/4007
摘要： An image resolution converting device for converting an original image into an image of a predetermined resolution includes: a pixel value storage section for storing the pixel values of the pixels included in the original image; a region determining section for successively determining regions, disposed newly generated pixels in accordance with a raster-scanned disposition order of the newly generated pixels; a pixel value read-out controlling section for generating output-control signals serving for outputting the pixel values of the pixels; and an interpolation-calculating section for calculating interpolations of pixel values of the newly generated pixels in accordance with the interpolated pixel values. It is possible to provide an image resolution converting device which can select the pixel groups of the original image, used for generating the new pixels after the resolution conversion while realizing small-size circuits used in the device.
摘要翻译：一种用于将原始图像转换为预定分辨率的图像的图像分辨率转换装置包括：像素值存储部分，用于存储原始图像中包括的像素的像素值; 区域确定部分，用于根据新生成的像素的光栅扫描的配置顺序连续地确定区域，设置新生成的像素; 像素值读出控制部分，用于产生用于输出像素的像素值的输出控制信号; 以及内插计算部分，用于根据内插的像素值来计算新生成的像素的像素值的内插。可以提供一种能够选择用于在分辨率转换之后产生新像素的原始图像的像素组的图像分辨率转换装置，同时实现在装置中使用的小尺寸电路。

27. 发明申请

US20080218391A1 Tracking loop type digital angle converter and angle/digital converting apparatus 有权
标题翻译：跟踪环型数字角度转换器和角度/数字转换装置
公开(公告)号：US20080218391A1
公开(公告)日：2008-09-11
申请号：US12072338
申请日：2008-02-25
申请人： Hisashi Nishimura
发明人： Hisashi Nishimura
IPC分类号： H03M1/48
CPC分类号： H03L7/08 , G01D5/24466 , H03M1/485
摘要： A tracking loop type digital angle converter that operates so that a deviation between input and output angles always becomes zero by feeding back the output angle to the input angle, wherein in order to eliminate a case where a control deviation decreases an angle error between the input and output angles is in the vicinity of 180°, i.e., where response becomes low, there are provided a detected signal sign judging section (41) that judges signs of rotation detection signals to determine a quadrant where the input angle exists, and an output angle correcting section (42) for comparing an angle region of the output angle and the quadrant of the input angle to detect a state where the angle error is excessive, judging that the control response is low and carrying out a process for compensating the output angle.
摘要翻译：跟踪环型数字角度转换器，其通过将输出角反馈到输入角度而使输入和输出角之间的偏差总是变为零，其中为了消除控制偏差减小输入之间的角度误差的情况并且输出角度在180°附近，即，在响应变低的情况下，提供了一个检测信号符号判断部分（41），其判断旋转检测信号的符号以确定存在输入角度的象限，以及输出角度校正部分（42），用于比较输出角度的角度区域和输入角度的象限，以检测角度误差过大的状态，判断出控制响应低，并执行用于补偿输出角度的处理。

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