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    • 4. 发明申请
    • Projector, method of measuring distance to the projector, and method and program for acquiring inclination angles of projection screen
    • 投影仪,测量与投影仪距离的方法以及用于获取投影屏倾斜角度的方法和程序
    • US20080036995A1
    • 2008-02-14
    • US11891564
    • 2007-08-10
    • Hideaki Inoue
    • Hideaki Inoue
    • G01C3/08G01C1/00
    • G01C1/00G01C3/08
    • A light source 165 of a projection unit 16 AM modulates an electric current supplied to a built-in LED. The projection unit 16 projects the modulated light on a projection screen. A photoreceiver 171 receives, with a time lag, a reflected portion of the modulated light from the screen, which corresponds to a time required for the light to travel from its projection to its reception. A calculation unit 173 acquires a phase difference between the projected light and its reflection at a respective one of a plurality of points on the screen, acquires a distance from the projector to the respective one of the plurality of points on the screen, and then acquires an inclination angle of the screen. Because the distance from the projector to a respective one of the plurality of points on the screen is acquired based on the corresponding phase difference, the measurement accuracy is improved compared to the triangular distance measuring method. The projector requires no distance measurement-only light source, thereby reducing the size of the projector.
    • 投影单元16AM的光源165调制供给内置LED的电流。 投影单元16将调制光投射在投影屏幕上。 光接收器171在时间上接收来自屏幕的调制光的反射部分,其对应于光从其投影到其接收所需的时间。 计算单元173获取投影光与其在屏幕上的多个点中的各个点上的反射之间的相位差,获取从投影仪到屏幕上的多个点中的相应一个点的距离,然后获取 屏幕的倾斜角度。 由于基于对应的相位差获取投影仪到屏幕上的多个点中的相应一个点的距离,所以与三角距离测量方法相比,提高了测量精度。 投影机不需要距离测量光源,从而减小投影机的尺寸。
    • 6. 发明授权
    • Pointed position detection device and pointed position detection method
    • 指向位置检测装置和指向位置检测方法
    • US07180510B2
    • 2007-02-20
    • US10651655
    • 2003-08-28
    • Hideaki InoueKeiichi Kobayashi
    • Hideaki InoueKeiichi Kobayashi
    • G09G5/00G09G1/00G09G3/28G09G3/22H04N9/12
    • G06F3/0386
    • A field sequential color projector includes an area sensor unit having an area sensor for photographing a screen, and an optical filter for permitting only a red light having the same color as a laser beam from a laser pointer to be input to the area sensor, and a color period/timing extraction unit which extracts timings for projecting red, green, and blue images. When a projection timing for a red image arrives while an image is projected, an MPU (Micro Processor Unit) receives a light of an image projected on the screen at that time to acquire image information, and detects a position pointed by the laser beam based on the acquired image information. Even if there exists a portion having the same color as the laser beam in the projected image, a pointed position detection device accurately detects the position irradiated by a pointing light of the laser pointer.
    • 现场顺序彩色投影仪包括具有用于拍摄屏幕的区域传感器的区域传感器单元和仅允许具有与来自激光指示器的激光束相同颜色的红光输入到区域传感器的滤光器,以及 彩色周期/定时提取单元,其提取用于投影红色,绿色和蓝色图像的定时。 当投影图像到达红色图像的投影定时时,MPU(微处理器单元)接收当时投影在屏幕上的图像的光以获取图像信息,并且基于激光束指向的位置 对所获取的图像信息。 即使存在与投影图像中的激光束相同颜色的部分,指尖位置检测装置也可以精确地检测由激光指示器的指示灯照射的位置。
    • 10. 发明授权
    • Preceding vehicle following control apparatus and method for automotive vehicle
    • 前车辆跟随车辆的控制装置和方法
    • US06430494B1
    • 2002-08-06
    • US09605536
    • 2000-06-29
    • Hideaki InoueYouji SetoYousuke Kobayashi
    • Hideaki InoueYouji SetoYousuke Kobayashi
    • G06F700
    • B60K31/0008B60W2720/106
    • In preceding vehicle following control apparatus and method for an automotive vehicle, a vehicular velocity controller includes a target inter-vehicle distance calculating section that calculates a target inter-vehicle distance from the vehicle to a preceding vehicle detected by an inter-vehicle distance sensor on the basis of a vehicular velocity detected by a vehicular velocity detector and an inter-vehicle distance detected by an inter-vehicle distance detector, a first vehicular velocity controlling section that performs a vehicular velocity control to bring the detected inter-vehicle distance substantially coincident with the target inter-vehicle distance, and a vehicular deceleration stopping section that performs a vehicular deceleration control to stop the vehicle in accordance with the inter-vehicle distance from the vehicle to the preceding vehicle immediately before a time point at which the inter-vehicle distance detector which trapped the presence of the preceding vehicle has not detected the preceding vehicle when the detected vehicular velocity falls in a low vehicular velocity region lower than a predetermined velocity value and -the inter-vehicle distance detector which trapped the presence of the preceding vehicle has not detected the preceding vehicle.
    • 在前述的车辆用车辆跟随控制装置和车辆的方法中,车速控制器包括目标车间距离计算部,其计算由车辆间距离传感器检测到的从车辆到前方车辆的目标车辆间距离 由车辆速度检测器检测到的车速的基准和车辆间距离检测器检测到的车辆间距离,第一车速控制部,其执行车速控制部,将检测到的车辆间距离基本上与 目标车辆间距离以及车辆减速停止部,该车辆减速停止部根据车辆距离车辆前后车辆的车辆间距离,在车辆间距离 捕获先前车辆的存在的检测器 当检测到的车辆速度落在低于预定速度值的低车速区域中时,没有检测到前一车辆,并且被困住前方车辆的车辆间距离检测器未检测到前方车辆。