Doppler velocity meter
    1.
    发明授权
    Doppler velocity meter 失效
    多普勒速度仪

    公开(公告)号:US5216478A

    公开(公告)日:1993-06-01

    申请号:US839708

    申请日:1992-02-24

    IPC分类号: B41J2/125 G01S7/481 G01S17/58

    摘要: A Doppler velocity meter has a radiation source for emitting a radiation beam the wavelength of which fluctuates, such as a laser; an optical system for directing the radiation beam to an object at an incident angle .theta. and a detector for detecting scattered beam generated from the object by directing the radiation beam. The optical system has a diffraction grating which serves to change the incident angle .theta. in accordance with a change in the wavelength .lambda. of the radiation beam in such a manner as to maintain the value of sin .theta./.lambda. substantially constant. The velocity meter can accurately detect the velocity of movement of the object regardless of any change in the wavelength .lambda., because the diffraction grating serves to substantially compensate for any change in the frequency of the scattered beam caused by the change in the wavelength.

    摘要翻译: 多普勒速度计具有用于发射其波长波动的辐射束的辐射源,例如激光; 用于将辐射束以入射角θ引导到物体的光学系统和用于通过引导辐射束来检测从物体产生的散射光束的检测器。 光学系统具有衍射光栅,其用于根据辐射束的波长λ的变化改变入射角θ,以保持sinθ/λ的值基本上恒定。 由于衍射光栅用于基本上补偿由波长变化引起的散射光束的频率的任何变化,所以速度计可以精确地检测物体的移动速度,而不管波长λ的任何变化。

    Doppler velocimeter
    2.
    发明授权
    Doppler velocimeter 失效
    多普勒测速仪

    公开(公告)号:US5194745A

    公开(公告)日:1993-03-16

    申请号:US905147

    申请日:1992-06-23

    IPC分类号: G01S7/481 G01S17/58

    CPC分类号: G01S7/4811 G01S17/58

    摘要: An apparatus for detecting the velocity information of an object comprises the irradiation optical system for performing the irradiation of beam to the predetermined position on an object to be measured; the photodetector for detecting the light from the irradiated object by the irradiation optical system, the velocity information being obtained by the detection; the detector for detecting the irradiating state for detecting the deviation of the irradiating position of the beam on the object to be measured; and the adjuster for adjusting the irradiating state of the beam on the object based on the detection result of the detector for detecting the irradiating state. With such constituents as above, the apparatus is capable of dealing with the fluctuation of the lightning to obtain a high-precision detection of the velocity information at a high speed.

    摘要翻译: 用于检测物体的速度信息的装置包括:用于对待测物体上的预定位置进行光束照射的照射光学系统; 用于通过照射光学系统检测来自照射物体的光的光电检测器,通过检测获得的速度信息; 检测器,用于检测用于检测光束在被测量物体上的照射位置的偏差的照射状态; 以及调节器,用于基于用于检测照射状态的检测器的检测结果来调节物体上的光束的照射状态。 利用这样的组成,该装置能够处理闪电的波动,以高速度获得对速度信息的高精度检测。

    Information recording apparatus
    3.
    发明授权
    Information recording apparatus 失效
    信息记录装置

    公开(公告)号:US5589858A

    公开(公告)日:1996-12-31

    申请号:US213998

    申请日:1994-03-15

    IPC分类号: B41J2/125 B41J11/42 B41J29/38

    CPC分类号: B41J2/125 B41J11/42

    摘要: In an apparatus wherein a recording medium is conveyed by a conveying system with the front surface of the recording medium opposed to recording heads and information is recorded on the recording medium by liquid droplet jet, a first speed meter is provided on the back side of the recording medium and further, a second speed meter for detecting liquid droplet jet speed together with the first speed meter is provided at a predetermined location, whereby the recording position is adjusted. The first and second speed meters may preferably be optical Doppler velocimeters which will not cause any speed detection error with fluctuation of the wavelength of a light source.

    摘要翻译: 在记录介质由记录介质的前表面与记录头相对并通过液滴喷射记录在记录介质上的传送系统传送的设备中,在第一速度计 记录介质,并且在预定位置处设置用于与第一速度计一起检测液滴喷射速度的第二速度计,由此调节记录位置。 第一和第二速度计可以优选地是光学多普勒测速仪,其不会由于光源的波长的波动而引起任何速度检测误差。

    Doppler velocimeter
    4.
    发明授权
    Doppler velocimeter 失效
    多普勒VELOCIMETER

    公开(公告)号:US5229830A

    公开(公告)日:1993-07-20

    申请号:US702427

    申请日:1991-05-20

    IPC分类号: G01P5/00 G01P3/36 G01S17/58

    CPC分类号: G01S17/58

    摘要: An apparatus for detecting the speed information of an object comprises a light source device, a frequency shifting device for shifting the frequency of a light flux from the light source device, a light-flux dividing device for dividing a light-flux whose frequency is divided by the frequency shifting device, one of the divided light fluxes divided by the light-flux dividing device being projected onto an object to be measured and the other light flux being projected in a direction other than that of the one of the light fluxes, a first detection device for detecting light from the object to be measured to which the one of the light fluxes is projected, the light detected by the first detection device having undergone a Doppler shift proportional to the speed of the object to be measured, a second detection device for detecting the other light flux, and a speed information detection device for detecting the speed information of the object to be measured on the basis of the comparison between the detection results of the first and second detection devices.

    Doppler velocimeter having a diffraction grating and dual lens groups
with identical focal distances
    5.
    发明授权
    Doppler velocimeter having a diffraction grating and dual lens groups with identical focal distances 失效
    具有衍射光栅的多普勒测速仪和具有相同焦距的双透镜组

    公开(公告)号:US5256885A

    公开(公告)日:1993-10-26

    申请号:US997129

    申请日:1992-12-24

    IPC分类号: G01S17/58 G01V9/04

    CPC分类号: G01S17/58

    摘要: An apparatus for detecting the velocity information of an object comprises a light source; optical system for irradiating beam from the light source, which is provided with a first lens or lens group and a second lens or lens group having an identical focal distance which are arranged apart from each other substantially two times such focal distance along the direction of the optical axis, to irradiate the beam onto the measuring object through the first and second lenses or lens group, and the optical system being arranged so as to make the value of sin .theta./.lambda. substantially constant where .theta. is the incident angle of the beam irradiated onto the measuring object and .lambda. is the wavelength of the beam; and detector for detecting the scattering rays of light from the measuring object irradiated by the above-mentioned optical system to detect the velocity information of the measuring object. With the constituents thus arranged, the apparatus is capable of effectively preventing the deviation of the intersecting position of the beams irradiated on the measuring object to perform a high-precision detection of the velocity information at all times.

    摘要翻译: 用于检测物体的速度信息的装置包括光源; 用于照射来自光源的光束的光学系统,其具有第一透镜或透镜组以及具有相同焦距的第二透镜或透镜组,所述第二透镜或透镜组沿着 通过第一和第二透镜或透镜组将光束照射到测量对象上,并且光学系统被布置为使得sinθ/λ的值基本上恒定,其中θ是辐射束的入射角 到测量对象上,λ是光束的波长; 以及检测器,用于检测由上述光学系统照射的测量对象的光的散射光线,以检测测量对象的速度信息。 通过这样配置,能够有效地防止照射在测定对象上的光束的交叉位置的偏差始终进行速度信息的高精度检测。

    Displacement information detection apparatus
    6.
    发明授权
    Displacement information detection apparatus 失效
    位移信息检测装置

    公开(公告)号:US5272512A

    公开(公告)日:1993-12-21

    申请号:US996852

    申请日:1992-12-21

    IPC分类号: G01S17/58 G01P3/36

    CPC分类号: G01S17/58

    摘要: An apparatus for detecting velocity of an object, includes a light source for generating light having a wavelength .lambda., a light-transmission block for receiving the light from the light source, and guiding the light onto the object, and a photosensor for detecting the light from the object on which the light from the light-transmission block is incident. The light-transmission block is integrally constituted by a diffraction grating for diffracting the light from the light source to produce two diffraction lights, and an optical element for causing the two diffraction lights from the diffraction grating to be incident onto the object at a predetermined incident angle. The diffraction grating and the optical element are arranged so as to have substantially constant sin.theta./.lambda. independently of a change in wavelength .lambda. of the light from the light source where .theta. is the incident angle of each diffraction light onto the object. A velocity of the object is detected through detection by the photosensor.

    摘要翻译: 一种用于检测物体的速度的装置包括用于产生具有波长λ的光的光源,用于接收来自光源的光并将光引导到物体上的光传输块,以及用于检测光的光传感器 来自光传输块的光入射的物体。 光传输块由衍射光栅一体地构成,用于衍射来自光源的光以产生两个衍射光,并且用于使来自衍射光栅的两个衍射光在预定事件处入射到物体上的光学元件 角度。 衍射光栅和光学元件被布置成独立于来自光源的光的波长λ的变化,具有基本恒定的sinθ/λ,其中θ是每个衍射光到物体上的入射角。 通过光传感器的检测来检测物体的速度。

    Doppler velocimeter and apparatus using the same
    7.
    发明授权
    Doppler velocimeter and apparatus using the same 失效
    多普勒液相色谱仪和使用它的设备

    公开(公告)号:US5179418A

    公开(公告)日:1993-01-12

    申请号:US703766

    申请日:1991-05-21

    IPC分类号: G01P5/00 B41J2/125 G01S17/58

    CPC分类号: B41J2/125 G01S17/58

    摘要: This invention is characterized in that a light beam from a light source is made to enter a diffraction grating and .+-. nth-order (n=1,2, . . . ) diffracted lights from the diffraction grating are made to enter a moving object at an angle substantially equal to the angle of intersection of the angles of diffraction of the two diffracted lights from the diffraction grating. As a result, the two diffracted lights are converged by a lens system provided between the diffraction grating and the light source on the moving object and intersect with each other. Scattered light subjected to Doppler shift by the moving object is detected by photodetector thereby detecting the velocity information of the moving object.

    SPEECH RECOGNIZER AND SPEECH RECOGNIZING METHOD
    10.
    发明申请
    SPEECH RECOGNIZER AND SPEECH RECOGNIZING METHOD 审中-公开
    语音识别和语音识别方法

    公开(公告)号:US20090240496A1

    公开(公告)日:2009-09-24

    申请号:US12404505

    申请日:2009-03-16

    IPC分类号: G10L15/20 G10L15/00

    摘要: According to one aspect of the invention, a speech recognizer includes: an audio data acquiring portion configured to acquire audio data via a microphone; a speech section detecting portion configured to detect a talking start time and a talking end time based on the audio data; a spoken word identifying portion configured to identify the audio in a speech section from the talking start time to the talking end time; and a noise suppressing portion configured to suppress a generation of a noise from an electrical noise source for the speech section.

    摘要翻译: 根据本发明的一个方面,语音识别器包括:音频数据获取部分,经配置以通过麦克风获取音频数据; 语音部分检测部分,被配置为基于音频数据检测通话开始时间和通话结束时间; 口语单词识别部分,被配置为从通话开始时间到通话结束时间识别话音部分中的音频; 以及噪声抑制部,被配置为抑制来自语音部分的电噪声源的噪声的产生。