公开(公告)号：US20030122520A1

公开(公告)日：2003-07-03

申请号：US10029872

申请日：2001-12-31

Applicant: Umax Data Systems Inc.

Inventor： Chun-Jen Chen ,  Shih-Huang Chen

IPC: H02P008/00

CPC classification number: H02P8/00

Abstract: A stepping motor controlling device and method are provided. The controlling device comprises a control circuit and a serial in-parallel out interface. The control circuit includes a motor controlling signal generator and a parallel in-serial out interface. The motor controlling signal generator generates a set of controlling signals in parallel and via the parallel in-serial out interface sends the set of controlling signals to the serial in-parallel out interface. The serial in-parallel out interface receives the set of control signals in sequence and then outputs them in parallel to a stepping motor driver for driving a stepping motor to a predetermined step.

Abstract translation: 提供了步进电机控制装置和方法。 控制装置包括控制电路和串行并行输出接口。 控制电路包括电动机控制信号发生器和并行串行输出接口。 电机控制信号发生器并联产生一组控制信号，并且通过并行串行输出接口将该组控制信号发送到串行并行输出接口。 串行并行输出接口依次接收一组控制信号，然后并行输出到步进电机驱动器，用于将步进电机驱动到预定步长。

公开(公告)号：US20030107779A1

公开(公告)日：2003-06-12

申请号：US10011711

申请日：2001-12-11

Applicant: UMAX DATA SYSTEMS INC

Inventor： Chun-Jen Chen ,  Kuo-Jeng Wang

IPC: H04N001/04

CPC classification number: H04N1/00241 ,  H04N1/00236 ,  H04N1/32358 ,  H04N2201/0015 ,  H04N2201/0049 ,  H04N2201/0462

Abstract: In accordance with the present invention, a method and a system for promoting scanning speed are provided. The method comprises steps of determining a transmission rate of a transit interface, adjusting system clock responsive to the transmission rate of the transit interface to change a data generated rate, and scanning an original to generate data at the rate controlled by the system clock. The key aspect of the present invention is by adjusting system clock to change the data generated rate corresponding to the transmission rate of the transit interface. Therefore, in response to the transmission rate of the transit interface, the system clock is adjusted to produce the data at a rate that can reduce the possibility of memory buffer full leading to the reduction in the time wasting on start-stop processes and therefore promote the scanning speed without requiring the increase in size of a memory buffer.

Abstract translation: 根据本发明，提供了一种用于促进扫描速度的方法和系统。 该方法包括以下步骤：确定传输接口的传输速率，响应于传输接口的传输速率调整系统时钟以改变数据产生速率，以及扫描原件以由系统时钟控制的速率生成数据。 本发明的关键方面是通过调整系统时钟来改变与传输接口的传输速率相对应的数据产生速率。 因此，响应于传输接口的传输速率，系统时钟被调整以产生数据，其速率可以降低存储缓冲器的可能性，从而导致在启动停止处理上浪费的时间减少，从而促进 扫描速度，而不需要增加存储器缓冲器的大小。

公开(公告)号：US20030063023A1

公开(公告)日：2003-04-03

申请号：US09968005

申请日：2001-10-02

Applicant: UMAX DATA SYSTEMS INC.

Inventor： Chun-Jen Chen ,  Shih-Huang Chen

IPC: H03M001/66

CPC classification number: H02P8/14 ,  H02P8/12

Abstract: An apparatus and a method for controlling a stepping motor are provided. The apparatus comprises a control circuit and a driving device. The control circuit is used to receive a set of input signals in digital form and output an analog signal with a predetermined voltage level equivalent to the set of the input signals in digital form. The driving device with a power source receives the analog signal to serve as a reference voltage and provides a driving current to a stepping motor. The driving current is determined by the analog signal.

Abstract translation: 提供了一种用于控制步进电动机的装置和方法。 该装置包括控制电路和驱动装置。 控制电路用于以数字形式接收一组输入信号，并且以数字形式输出具有与该组输入信号相当的预定电压电平的模拟信号。 具有电源的驱动装置接收模拟信号作为参考电压，并向步进电机提供驱动电流。 驱动电流由模拟信号决定。