Motor control device
    2.
    发明授权
    Motor control device 失效
    电机控制装置

    公开(公告)号:US4897778A

    公开(公告)日:1990-01-30

    申请号:US172933

    申请日:1988-03-25

    IPC分类号: H02P7/29 H02P23/00

    摘要: There is provided a motor control device comprising a motor; an apparatus for entering the number of revolutions of the motor; a detector that detects the number of revolutions of the motor; and a microcomputer for entering the output from the detector and a controlling the motor according to predetermined programs, wherein the microcomputer comprises a counter to which a count value is set according to a circuit from the input to form a reference frequency signal and a circuit for forming a phase error signal according to the reference frequency signal and the output of the detector and outputs a signal for driving the motor based on the phase error signal.

    摘要翻译: 提供了一种电动机控制装置,包括电动机; 用于输入电动机转数的装置; 检测电动机的转数的检测器; 以及微型计算机,用于输入来自检测器的输出和根据预定的程序控制马达,其中微型计算机包括根据来自输入端的电路设置计数值以形成基准频率信号的计数器,以及用于 根据参考频率信号和检测器的输出形成相位误差信号,并根据相位误差信号输出用于驱动电动机的信号。

    Image processing apparatus with variable magnification
    7.
    发明授权
    Image processing apparatus with variable magnification 失效
    具有可变放大倍数的图像处理装置

    公开(公告)号:US4743944A

    公开(公告)日:1988-05-10

    申请号:US86243

    申请日:1987-08-17

    IPC分类号: G03G15/00 G03G15/047

    摘要: An image processing apparatus includes a process unit for reproducing an image on a document onto a recording medium and a detection circuit for detecting the status of the document image. A control circuit controls the process unit to reproduce the document image at a predetermined magnification. The status of the document may include the area of the image on the document, whether the document image is adjacent an edge of the document, the location of the edge of the document, or the disposition of the document. The magnification of reproduction of the document image is then controlled by the control circuit in accordance with the detection of that particular status. For example, if it is determined that the document image is adjacent the edge of the document, reproduction is controlled to be at reduced magnification. If the document is determined to be away from a reference position, a portion of the reproduced image may be erased so that only the actual document image is reproduced rather than unwanted background adjacent the document.

    摘要翻译: 图像处理装置包括用于将文档上的图像再现到记录介质上的处理单元和用于检测文档图像的状态的检测电路。 控制电路控制处理单元以预定的倍率再现原稿图像。 文档的状态可以包括文档上的图像的区域,文档图像是否与文档的边缘相邻,文档边缘的位置或文档的布置。 然后根据该特定状态的检测由控制电路控制文件图像的再现的放大率。 例如,如果确定文档图像与文档的边缘相邻,则将再现控制为缩小倍率。 如果文档被确定为远离参考位置,则可以擦除再现图像的一部分,使得仅重现实际文档图像而不是与文档相邻的不需要的背景。

    Image forming apparatus controlled by a plurality of image density
detectors
    8.
    发明授权
    Image forming apparatus controlled by a plurality of image density detectors 失效
    由多个图像浓度检测器控制的图像形成装置

    公开(公告)号:US4674863A

    公开(公告)日:1987-06-23

    申请号:US637792

    申请日:1984-08-06

    IPC分类号: G03F7/20 G03G15/00

    摘要: An improved image forming apparatus for controlling image density at an optimum level. The image forming apparatus has a plurality of detectors for detecting an original image density. The detectors have mutually different detecting characteristics, wherein image forming conditions are controlled based on the outputs of the detectors. Control may be effected in accordance with a comparison of the detected values, and in accordance with a selected operation mode.

    摘要翻译: 一种用于以最佳水平控制图像浓度的改进的图像形成装置。 图像形成装置具有用于检测原始图像浓度的多个检测器。 检测器具有相互不同的检测特性,其中基于检测器的输出来控制图像形成条件。 可以根据检测值的比较,并根据所选择的操作模式进行控制。