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    • 1. 发明授权
    • Distance measuring device and method thereof
    • 距离测量装置及其方法
    • US07336346B2
    • 2008-02-26
    • US11435284
    • 2006-05-17
    • Akihiro AokiYutaka NakamuraKoji SasakiToshihiro UchimuraFutoshi OsadaHayami Kikawa
    • Akihiro AokiYutaka NakamuraKoji SasakiToshihiro UchimuraFutoshi OsadaHayami Kikawa
    • G01C3/08
    • G01S17/36
    • A distance measuring device is provided that reduces the time required for a distance measurement without degrading accuracy of the measured value. The distance measuring device includes a reference signal oscillator (26) that generates a reference signal (K), a light source (20) that emits a distance measuring light (L) modulated based on the reference signal, a light receiving element (28) that receives the distance measuring light reflected from a target (22) and converts the distance measuring light to a distance measuring signal (M), a frequency converter (37) that converts the distance measuring signal to an intermediate frequency signal, an A/D converter (42) that samples the intermediate frequency signal in synchronization with the reference signal, a memory (46) that stores data of the sampled intermediate frequency signal, and a CPU (44) that calculates a distance based on the intermediate frequency signal data, the CPU calculates amplitude of each frequency of the intermediate frequency signal based on the intermediate frequency signal data, determines an average of the amplitude, and ends sampling to calculate a distance when the number of pieces of the intermediate frequency signal data is equal to or more than a minimum required number and the average has become equal to or more than a predetermined value.
    • 提供了一种距离测量装置,其减少测量所需的时间,而不降低测量值的精度。 测距装置包括产生基准信号(K)的参考信号振荡器(26),发射基于参考信号调制的测距光(L)的光源(20),光接收元件(28) 接收从目标(22)反射的距离测量光并将距离测量光转换成距离测量信号(M),将测距信号转换为中频信号的变频器(37),A / D 转换器(42),与参考信号同步地采样中频信号;存储器(46),存储采样的中频信号的数据;以及CPU(44),其基于中频信号数据计算距离, CPU基于中频信号数据计算中频信号的每个频率的幅度,确定幅度的平均值,并将采样结束为ca 当中频信号数据的数量等于或大于最小所需数量并且平均值已经变得等于或大于预定值时,计算距离。
    • 2. 发明申请
    • Distance measuring device and method thereof
    • 距离测量装置及其方法
    • US20060285102A1
    • 2006-12-21
    • US11435284
    • 2006-05-17
    • Akihiro AokiYutaka NakamuraKoji SasakiToshihiro UchimuraFutoshi OsadaHayami Kikawa
    • Akihiro AokiYutaka NakamuraKoji SasakiToshihiro UchimuraFutoshi OsadaHayami Kikawa
    • G01C3/08
    • G01S17/36
    • A distance measuring device is provided that reduces the time required for a distance measurement without degrading accuracy of the measured value. The distance measuring device includes a reference signal oscillator (26) that generates a reference signal (K), a light source (20) that emits a distance measuring light (L) modulated based on the reference signal, a light receiving element (28) that receives the distance measuring light reflected from a target (22) and converts the distance measuring light to a distance measuring signal (M), a frequency converter (37) that converts the distance measuring signal to an intermediate frequency signal, an A/D converter (42) that samples the intermediate frequency signal in synchronization with the reference signal, a memory (46) that stores data of the sampled intermediate frequency signal, and a CPU (44) that calculates a distance based on the intermediate frequency signal data, the CPU calculates amplitude of each frequency of the intermediate frequency signal based on the intermediate frequency signal data, determines an average of the amplitude, and ends sampling to calculate a distance when the number of pieces of the intermediate frequency signal data is equal to or more than a minimum required number and the average has become equal to or more than a predetermined value.
    • 提供了一种距离测量装置,其减少测量所需的时间,而不降低测量值的精度。 测距装置包括产生基准信号(K)的参考信号振荡器(26),发射基于参考信号调制的测距光(L)的光源(20),光接收元件(28) 接收从目标(22)反射的距离测量光并将距离测量光转换成距离测量信号(M),将测距信号转换为中频信号的变频器(37),A / D 转换器(42),与参考信号同步地采样中频信号;存储器(46),存储采样的中频信号的数据;以及CPU(44),其基于中频信号数据计算距离, CPU基于中频信号数据计算中频信号的每个频率的幅度,确定幅度的平均值,并将采样结束为ca 当中频信号数据的数量等于或大于最小所需数量并且平均值已经变得等于或大于预定值时,计算距离。
    • 3. 发明授权
    • Electric optical distance wavelength meter
    • 电光学距离波长计
    • US07339655B2
    • 2008-03-04
    • US11252589
    • 2005-10-19
    • Yutaka NakamuraHayami Kikawa
    • Yutaka NakamuraHayami Kikawa
    • G01C3/08
    • G01C3/08G01S7/497G01S17/36
    • It is an object of the present invention to provide an electric optical distance wavelength meter detecting the time when the switching is completed and shortening the time required for distance measurement by immediately starting the distance measurement when measurement light and reference light are switched by a light path switching device. An electric optical distance wavelength meter includes a light emitting element for emitting measurement light toward a target placed on a measurement point; a light receiving element for receiving the measurement light coming back after reflecting on the target; a CPU for calculating the distance to the target or the object based on light receiving signals from the light receiving element; and a light path switching device for switching the measurement light so that the measurement light passes through an internal light path from the light emitting element to the light receiving element.
    • 本发明的目的是提供一种电光学距离波长计,其检测切换完成的时间,并且当通过光路切换测量光和参考光时,通过立即开始距离测量来缩短距离测量所需的时间 开关装置。 电光学距离波长计包括:发射测量光的发光元件,朝向放置在测量点上的目标; 光接收元件,用于接收在目标上反射之后返回的测量光; CPU,用于基于来自光接收元件的光接收信号计算到目标或物体的距离; 以及光路切换装置,用于切换测量光,使得测量光通过从发光元件到光接收元件的内部光路。
    • 4. 发明申请
    • Electric optical distance wavelength meter
    • 电光学距离波长计
    • US20060082758A1
    • 2006-04-20
    • US11252589
    • 2005-10-19
    • Yutaka NakamuraHayami Kikawa
    • Yutaka NakamuraHayami Kikawa
    • G01C3/08
    • G01C3/08G01S7/497G01S17/36
    • It is an object of the present invention to provide an electric optical distance wavelength meter detecting the time when the switching is completed and shortening the time required for distance measurement by immediately starting the distance measurement when measurement light and reference light are switched by a light path switching device. An electric optical distance wavelength meter includes a light emitting element for emitting measurement light toward a target placed on a measurement point; a light receiving element for receiving the measurement light coming back after reflecting on the target; a CPU for calculating the distance to the target or the object based on light receiving signals from the light receiving element; and a light path switching device for switching the measurement light so that the measurement light passes through an internal light path from the light emitting element to the light receiving element.
    • 本发明的目的是提供一种电光学距离波长计,其检测切换完成的时间,并且当通过光路切换测量光和参考光时,通过立即开始距离测量来缩短距离测量所需的时间 开关装置。 电光学距离波长计包括:发射测量光的发光元件,朝向放置在测量点上的目标; 光接收元件,用于接收在目标上反射之后返回的测量光; CPU,用于基于来自光接收元件的光接收信号计算到目标或物体的距离; 以及光路切换装置,用于切换测量光,使得测量光通过从发光元件到光接收元件的内部光路。
    • 7. 发明授权
    • Manual surveying instrument having collimation assisting device
    • 具有准直辅助装置的手动测量仪器
    • US08225518B2
    • 2012-07-24
    • US13057785
    • 2009-05-29
    • Satoshi YanobeYutaka Nakamura
    • Satoshi YanobeYutaka Nakamura
    • G01C5/00
    • G01C15/00
    • [Problem] To provide a manual surveying instrument that allows easily performing a collimating operation and allows performing a high precision measurement in a short time.[Solution Means] The manual surveying instrument includes a collimation assist device (70) having a collimation light transmitting system that emits a collimation light (R) along a collimation axis (O) toward a target installed at a measurement point, an area sensor (80) that obtains an image of a scene captured within a field of view of a collimating telescope (3), a display unit (48) that displays the image, a collimation light detecting unit (82) that detects the target as a result of receiving the collimation light reflected on the target by the area sensor, and an arithmetic control unit (46) that displays an area (94) being within a predetermined deviation from the collimation axis and where distance measurement is possible and a symbol indicating the target on the display unit as an animation image, judges that collimation has been completed when the target has been captured, by a manual operation of the collimating telescope, within the area where distance measurement is possible to perform a distance and angle measurement, and corrects an angle measurement value according to a deviation from the collimation axis of the target.
    • [问题]提供一种能够容易地进行准直操作并允许在短时间内执行高精度测量的手动测量仪器。 [解决方案]手动测量仪器包括准直辅助装置(70),准直辅助装置(70)具有准直光传输系统,其沿着准直轴(O)向安装在测量点处的目标发射准直光(R),区域传感器 80),其获得在准直望远镜(3)的视野内拍摄的场景的图像,显​​示图像的显示单元(48);作为结果的结果检测目标的准直光检测单元(82) 接收由所述区域传感器反射在所述目标上的准直光;以及运算控制单元,其显示与所述准直轴在预定偏差内的区域(94),并且能够进行距离测量,以及指示所述目标的符号 显示单元作为动画图像,通过准直望远镜的手动操作,在可能进行距离测量的区域内,判断已经捕获目标时的准直已经完成 执行距离和角度测量,并根据与目标的准直轴的偏差来校正角度测量值。
    • 10. 发明授权
    • Dynamic semiconductor storage device and method for operating same
    • 动态半导体存储装置及其操作方法
    • US07616510B2
    • 2009-11-10
    • US11848401
    • 2007-08-31
    • Yutaka Nakamura
    • Yutaka Nakamura
    • G11C7/00
    • G11C11/4094G11C11/4099
    • The object of the present invention is to provide a DRAM, in which the operation speed for a sense amplifier can be increased. Bit line precharging circuits PCt and PCb are arranged to precharge bit lines BLt and /BLt to a ground voltage GND, and reference word lines RWLo and RWLe and reference memory cells RMC are arranged, so that when a word line WL is activated, a potential difference is always generated between the bit lines BLt and /BLt. The sources of transistors N10 and N11 of an N-type sense amplifier NSAt are connected directly to a ground terminal GND, and the sources of transistors P2 and P3 of a P-type sense amplifier PSA are connected directly to a power source VDD. The gates of the transistors N10 and N11 are connected to the bit lines /BLt and BLt, and the drains are connected to the bit lines BLt and /BLt, respectively. Shift word lines SWL and shift memory cells SMC are arranged, so that the N sense amplifier NSAt can amplify the potential difference between the bit lines BLt and /BLt.
    • 本发明的目的是提供一种DRAM,其中可以增加读出放大器的操作速度。 位线预充电电路PCt和PCb布置成将位线BLt和/ BLt预充电到地电压GND,并且布置参考字线RWLo和RWLe以及参考存储单元RMC,使得当字线WL被激活时, 总是在位线BLt和/ BLt之间产生差异。 N型读出放大器NSAt的晶体管N10和N11的源极直接连接到接地端子GND,P型读出放大器PSA的晶体管P2和P3的源极直接连接到电源VDD。 晶体管N10和N11的栅极连接到位线BLt和BLt,漏极分别连接到位线BLt和/ BLt。 移位字线SWL和移位存储器单元SMC被布置,使得N个读出放大器NSAt可以放大位线BLt和/ BLt之间的电位差。