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32 条记录 (耗时 0.051 秒)

    Communication system using a modem with a mode in which data receiving operation is shifted to control signal communication upon detecting a momentary disconnection
    12.
    发明授权
    Communication system using a modem with a mode in which data receiving operation is shifted to control signal communication upon detecting a momentary disconnection 失效
    使用具有数据接收操作的模式的调制解调器的通信系统，以在检测到瞬时断开时控制信号通信

    公开(公告)号：US06311233B1

    公开(公告)日：2001-10-30

    申请号：US09063679

    申请日：1998-04-22

    申请人： Koji Nishioka ,  Takehiro Yoshida ,  Hitoshi Saito ,  Koji Harada

    发明人： Koji Nishioka ,  Takehiro Yoshida ,  Hitoshi Saito ,  Koji Harada

    IPC分类号： G06F1314

    CPC分类号： H04L12/2854

    摘要： Even if a signal line is momentarily disconnected while data communication, such as image data communication, is being performed by using, for example, an ITU-T Recommendation V.34 modem, communication is suitably continued. A main controller (CPU) determines the operating state (status) of a modem having the following mode. In this mode, the receiving operation of an image signal is automatically shifted to control signal communication upon detecting a pattern of a training signal. The main controller enables the above mode if it determines that the receiving status of the modem is not normal. It is thus possible for the modem to shift from the receiving of an image signal to control signal communication when the signal line is momentarily disconnected.

    摘要翻译： 即使通过使用例如ITU-T V.34建议书V.34调制解调器来执行诸如图像数据通信的数据通信时，信号线被短暂地断开，通信也适当地继续。 主控制器（CPU）确定具有以下模式的调制解调器的操作状态（状态）。 在该模式中，当检测到训练信号的模式时，图像信号的接收操作被自动移位以控制信号通信。 如果主控制器确定调制解调器的接收状态不正常，则启用上述模式。 因此，当信号线暂时断开时，调制解调器可以从图像信号的接收转移到控制信号通信。

    Image reading apparatus
    13.
    发明授权
    Image reading apparatus 失效
    具有可选副扫描和重新启动的图像读取装置

    公开(公告)号：US06268934B1

    公开(公告)日：2001-07-31

    申请号：US08824019

    申请日：1997-03-21

    申请人： Koji Nishioka

    发明人： Koji Nishioka

    IPC分类号： H04N104

    CPC分类号： H04N1/0402 ,  H04N1/0408 ,  H04N1/0455

    摘要： An image reading apparatus is provided with a synchronizing circuit for synchronizing timing of scanning for image reading with timing of driving a pulse motor for the image reading, and a control circuit for variably controlling an output period of the timing of scanning for the image reading, and is arranged to be capable of varying the pitch of image reading at an arbitrary timing.

    摘要翻译： 图像读取装置具有同步电路，用于将用于图像读取的扫描定时与用于驱动用于图像读取的脉冲电机的定时同步;以及控制电路，用于可变地控制用于图像读取的扫描定时的输出周期， 并且被布置为能够在任意定时改变图像读取的音调。

    Pulse-motor driving apparatus
    18.
    发明授权
    Pulse-motor driving apparatus 失效
    脉冲电机驱动装置

    公开(公告)号：US5998955A

    公开(公告)日：1999-12-07

    申请号：US846583

    申请日：1997-04-17

    申请人： Koji Nishioka

    发明人： Koji Nishioka

    IPC分类号： G05B11/28 ,  H02P8/00 ,  H02P8/12 ,  H02P8/14 ,  H02P8/22 ,  G05B11/18

    CPC分类号： H02P8/14 ,  G05B11/28

    摘要： For efficient pulse motor drive over a wide speed range, two drive-current control methods are switched in accordance with the speed of the pulse motor. As the first method, a PWM control method generates a pulsewidth modulation signal in accordance with a value indicated by a current control pattern. The pulse-motor drive current is controlled by voltage corresponding to the pulsewidth. As the second method, a BIT control method generates a digital signal corresponding to the value indicated by the current control pattern. The pulse-motor drive current is controlled by voltage corresponding to the digital value.

    摘要翻译： 为了在宽速度范围内实现高效的脉冲电机驱动，根据脉冲电机的速度切换两种驱动电流控制方式。 作为第一种方法，PWM控制方法根据由电流控制模式表示的值产生脉宽调制信号。 脉冲电机驱动电流由对应于脉冲宽度的电压控制。 作为第二种方法，BIT控制方法产生对应于由当前控制模式指示的值的数字信号。 脉冲电机驱动电流由对应于数字值的电压控制。