公开(公告)号：US20030025686A1

公开(公告)日：2003-02-06

申请号：US10202588

申请日：2002-07-23

Applicant: Via Technologies, Inc.

Inventor： Shih-Kai Lee ,  Zuo-Jun Shih

IPC: G09G005/00

CPC classification number: G06F3/1454

Abstract: A method of automatically refreshing the display screen of a terminal and the computer program thereof is accomplished by incorporating a subroutine for periodically polling the connection status of a terminal into a main program running on host. A polling period is set in the main program, and a software interrupt is generated to invoke the execution of a corresponding interrupt service routine when the polling period is reached. The interrupt service routine contains a polling subroutine for polling the connection status of the terminal by sending a control string to the terminal and recording the polling result. The present polling result will be compared with the previous polling result to check whether the connection status of the terminal is changed. If the connection status of the terminal is changed from off-line to on-line, a display screen refresh subroutine is executed to refresh the display screen of the terminal.

Abstract translation: 通过结合用于周期性地轮询终端的连接状态到主机上运行的主程序的子程序来实现自动刷新终端的显示屏幕及其计算机程序的方法。 在主程序中设置轮询周期，并且当达到轮询周期时，产生软件中断以调用相应的中断服务程序的执行。 中断服务程序包含轮询子程序，用于通过向终端发送控制字符串并记录轮询结果来轮询终端的连接状态。 将将当前轮询结果与先前的轮询结果进行比较，以检查终端的连接状态是否改变。 如果终端的连接状态从离线变为在线，则执行显示画面刷新子程序来刷新终端的显示画面。