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1. 发明申请

US20090160436A1 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：US20090160436A1
公开(公告)日：2009-06-25
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：参考信号产生电路产生用于去除角度计算部分中的激励信号分量的同步检测中使用的参考信号，该角度计算部分将从分解器输出的两相分解器检测信号获得的检测角θ转换为数字输出角度phi。参考信号发生电路包括第一乘法器，第二乘法器和加法器。第一乘法器将解算检测器检测信号sinθsin（ωgat+ Deltaomega）中的一个与从角度计算部分获得的数字输出角度phi的正弦值sinφ相乘。第二乘法器将另一个解算器检测信号cosθsin（ωgat+ Deltaomega）乘以从角度计算部分获得的数字输出角度phi的余弦值cos phi。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（ωgat+ Deltaomega）作为参考信号。

2. 发明申请

US20090160687A1 R/D converter and angle detecting apparatus 有权
标题翻译： R / D转换器和角度检测装置
公开(公告)号：US20090160687A1
公开(公告)日：2009-06-25
申请号：US12317095
申请日：2008-12-19
申请人： Kenichi Nakazato , Hisashi Nishimura
发明人： Kenichi Nakazato , Hisashi Nishimura
IPC分类号： H03M1/48
CPC分类号： H03M1/0827 , H03M1/485
摘要： A band elimination filter 35 that eliminates or reduces a low frequency noise superposed on resolver signals S1 and S2 is provided between a synchronous detection circuit 34 that performs synchronous detection by referring to an excitation signal and a controller 36 that controls a digital angle output φ to make a deviation (sin(θ−φ)), which is the output of the synchronous detection circuit, zero.
摘要翻译：消除或降低叠加在分解器信号S1和S2上的低频噪声的带除滤波器35设置在通过参考激励信号执行同步检测的同步检测电路34和控制数字角度输出phi至作为同步检测电路的输出的偏差（sin（θ-phi））为零。

3. 发明授权

US07768431B2 R/D converter and angle detecting apparatus 有权
标题翻译： R / D转换器和角度检测装置
公开(公告)号：US07768431B2
公开(公告)日：2010-08-03
申请号：US12317095
申请日：2008-12-19
申请人： Kenichi Nakazato , Hisashi Nishimura
发明人： Kenichi Nakazato , Hisashi Nishimura
IPC分类号： H03M1/48
CPC分类号： H03M1/0827 , H03M1/485
摘要： A band elimination filter 35 that eliminates or reduces a low frequency noise superposed on resolver signals S1 and S2 is provided between a synchronous detection circuit 34 that performs synchronous detection by referring to an excitation signal and a controller 36 that controls a digital angle output φ to make a deviation (sin(θ−φ)), which is the output of the synchronous detection circuit, zero.
摘要翻译：消除或降低叠加在分解器信号S1和S2上的低频噪声的带除滤波器35设置在通过参考激励信号执行同步检测的同步检测电路34和控制数字角输出＆phgr的控制器36之间。做出偏差（sin（＆thetas; - ＆phgr;）），即同步检测电路的输出为零。

4. 发明申请

US20100001778A1 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：US20100001778A1
公开(公告)日：2010-01-07
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： H03K3/027 , G01B7/30
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/ 计数单元52C具有输入旋转角度θ，并且产生作为向上计数请求或递减计数请求的计数请求，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，并产生一个向上计数命令或递减计数命令，只有当先前计数请求和下一个计数请求都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接收到最低有效位，升/降计数单元52C的第二最低有效位，并产生并输出A相脉冲信号和B相脉冲信号。

5. 发明申请

US20090179634A1 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：US20090179634A1
公开(公告)日：2009-07-16
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。

6. 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。

7. 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。

8. 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。

9. 发明授权

US09198557B2 Electronic endoscopic apparatus 有权
标题翻译：电子内窥镜装置
公开(公告)号：US09198557B2
公开(公告)日：2015-12-01
申请号：US13527113
申请日：2012-06-19
申请人： Kazuhiro Takizawa , Motoo Azuma , Hisashi Nishimura , Kaoru Kotoda , Satoshi Tanaka , Takayuki Sato , Naruyasu Kobayashi
发明人： Kazuhiro Takizawa , Motoo Azuma , Hisashi Nishimura , Kaoru Kotoda , Satoshi Tanaka , Takayuki Sato , Naruyasu Kobayashi
IPC分类号： H04N5/06 , A61B1/00 , A61B1/04
CPC分类号： A61B1/00006 , A61B1/00009 , A61B1/00013 , A61B1/00016 , A61B1/00045 , A61B1/04 , H04N5/0675 , H04N5/123
摘要： A phase control unit compares a phase of a display synchronization signal with a phase of a clock signal generated from a clock signal generated by an imaging clock generating unit, and controls oscillation of the imaging clock generating unit based on a result of the comparison. A drive signal generating unit generates a drive signal that drives a CMOS sensor based on a multiplication clock signal synchronized to the clock signal.
摘要翻译：相位控制单元将显示同步信号的相位与由成像时钟产生单元生成的时钟信号产生的时钟信号的相位进行比较，并且基于比较结果控制成像时钟生成单元的振荡。驱动信号生成单元基于与时钟信号同步的乘法时钟信号生成驱动CMOS传感器的驱动信号。

10. 发明申请

US20120320177A1 ELECTRONIC ENDOSCOPE APPARATUS 有权
标题翻译：电子内窥镜装置
公开(公告)号：US20120320177A1
公开(公告)日：2012-12-20
申请号：US13528385
申请日：2012-06-20
申请人： Hisashi Nishimura , Kaoru Kotoda , Satoshi Tanaka , Naruyasu Kobayashi , Takayuki Sato , Kazuhiro Takizawa , Motoo Azuma
发明人： Hisashi Nishimura , Kaoru Kotoda , Satoshi Tanaka , Naruyasu Kobayashi , Takayuki Sato , Kazuhiro Takizawa , Motoo Azuma
IPC分类号： H04N5/04 , H04N7/18
CPC分类号： A61B1/04 , A61B1/00006 , A61B1/00009 , A61B1/00016 , A61B1/0002 , A61B1/00045 , H04N5/0675 , H04N5/123 , H04N2005/2255
摘要： A phase comparing unit compares a phase of an imaging-side synchronization signal with a phase of a display-side clock, and controls oscillation of a display-side clock generating unit based on a result of the comparison. A display timing adjusting unit receives a video signal output from an endoscope at a timing based on the imaging-side synchronization signal and adjusts a synchronization timing of the received video signal to a synchronization timing based on a display-side synchronization signal.
摘要翻译：相位比较单元将成像侧同步信号的相位与显示侧时钟的相位进行比较，并且基于比较的结果来控制显示侧时钟生成单元的振荡。显示定时调整单元在基于成像侧同步信号的定时接收从内窥镜输出的视频信号，并且基于显示侧同步信号将接收到的视频信号的同步定时调整为同步定时。

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