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    • 3. 发明授权
    • Motor controlling apparatus and electric power steering apparatus using the same
    • 电动机控制装置及使用其的电动助力转向装置
    • US08803455B2
    • 2014-08-12
    • US13202430
    • 2011-07-26
    • Yousuke ImamuraMasahiro MaedaKenichi Shimada
    • Yousuke ImamuraMasahiro MaedaKenichi Shimada
    • H02K5/00
    • H02P6/002B62D5/046H02P6/28H02P23/03H02P23/04
    • [Problem]An object of the present invention is to provide a motor controlling apparatus that comprises a single current sensor and obtains a maximal duty range that current becomes detectable with realizing size reduction, weight saving and cost reduction and an electric power steering apparatus using the same.[Means for solving the problem]A motor controlling apparatus that calculates each phase duty command value for controlling a motor current by means of control calculation, forms PWM waveforms corresponding to each phase duty command value and drives the motor based on the PWM waveforms by an inverter, comprising: a duty shift function that uniformly either increases or decreases each phase duty command value with keeping differences in each phase duty command value; and a PWM output position changing function that decides output positions of each phase PWM signal, and wherein a single current detector is connected to power supply input side or power supply output side of the inverter, timing that a PWM signal of only one phase becomes ON state or PWM signals of two phases become ON state simultaneously is generated at fixed positions of PWM periods, and the motor current is detected.
    • 发明内容本发明的目的是提供一种电动机控制装置,其包括单个电流传感器,并且在实现尺寸减小,重量减轻和成本降低的情况下获得电流变得可检测的最大占空比范围,以及使用 相同。 解决问题的手段通过控制计算来计算用于控制电动机电流的各相负载指令值的电动机控制装置形成与各相占空比指令值对应的PWM波形,并根据PWM波形驱动电动机 逆变器,包括:占空比函数,其均匀地增加或减少每个相位占空指令值,同时保持每个相位占空指令值的差异; 以及PWM输出位置变更功能,其决定各相PWM信号的输出位置,其中,单个电流检测器与逆变器的电源输入侧或电源输出侧连接,只有一相的PWM信号为ON 在PWM周期的固定位置产生两相状态或PWM信号同时变为导通状态,并检测电动机电流。
    • 5. 发明申请
    • VIDEO PROCESSOR DEVICE AND VIDEO PROCESSING METHOD
    • 视频处理器和视频处理方法
    • US20120127369A1
    • 2012-05-24
    • US13291754
    • 2011-11-08
    • Kenichi Shimada
    • Kenichi Shimada
    • H04N9/74
    • H04N7/012H04N5/142H04N7/12
    • A video processor and method for swiftly detecting swaps occurring between links during transmission of images by the dual-link system. A first image combiner unit combines an image D1 of a first link as an odd-numbered image, with an image of a second link, to generate a first combination image. A second image combiner unit combines an image of a second link as an odd-numbered image, with the image of the first link to generate a second combination image. An edge detector unit detects the horizontal edge of the first combination image and the second combination image. A judgment unit compares the number of triple edges in the first combination image and second combination image, and judges the combination image having more triple edges as the error image. The triple edges contain three consecutive edges along the horizontal direction, and the rising edges and falling edges are arrayed alternately.
    • 一种视频处理器和方法,用于通过双链路系统在图像传输期间快速检测在链路之间发生的交换。 第一图像合成器单元将作为奇数图像的第一链接的图像D1与第二链接的图像组合,以生成第一组合图像。 第二图像组合器单元将作为奇数图像的第二链接的图像与第一链接的图像组合以生成第二组合图像。 边缘检测器单元检测第一组合图像和第二组合图像的水平边缘。 判断单元比较第一组合图像和第二组合图像中的三重边缘的数量,并且将具有更多三边的组合图像判断为误差图像。 三边形沿着水平方向包含三个连续的边缘,并且上升沿和下降沿交替排列。
    • 9. 发明授权
    • Laser light source device, optical information recording device, and optical information reproducing device
    • 激光光源装置,光信息记录装置和光信息重放装置
    • US07817705B2
    • 2010-10-19
    • US12043161
    • 2008-03-06
    • Kenichi ShimadaTatsuro Ide
    • Kenichi ShimadaTatsuro Ide
    • H01S3/08H01S3/10H01S3/13
    • G11B7/1362G11B7/0065G11B7/126G11B7/1356H01S5/005H01S5/0071
    • The hologram recording technology expected to realize ultrahigh-density information recording is one of the post Blu-ray Disc technology. When we think about developing a drive based on this technology and suitable for consumer electronics, it is considered most desirable from the viewpoint of upward compatibility to solve the problem of the BD-compatibility. The problem in sharing the laser light source between the hologram recording device and the current optical disc device, however, is that the hologram recording requires a high-coherent, single-mode light beam, while the current optical discs requires a low-coherent, multi-mode light beam. In point of the coherence of the light source, the above two cases require the light beams of the characteristics opposite to each other, and this presents an important task.For the purpose of solving the above-mentioned problem, the present invention is to adopt the variable wavelength type laser light source device composed of a semiconductor laser and a diffraction grating, wherein a polarization direction converter and a polarized beam splitter are placed in the optical path between the above semiconductor laser and the above diffraction grating.
    • 预期实现超高密度信息记录的全息记录技术是蓝光光盘技术之一。 当我们考虑开发基于这种技术并适合消费电子产品的驱动器时,从向上兼容性的角度来看,最为理想的是解决BD兼容性的问题。 然而,在全息记录装置和当前光盘装置之间共享激光光源的问题在于,全息记录需要高相干单模光束,而目前的光盘需要低相干, 多模光束。 在光源的相干性方面,上述两种情况需要具有彼此相反特性的光束,这是一项重要任务。 为了解决上述问题,本发明采用由半导体激光器和衍射光栅构成的可变波长型激光光源装置,其中偏振方向转换器和偏振分束器被放置在光学 上述半导体激光器和上述衍射光栅之间的路径。