公开(公告)号：KR1020010038471A

公开(公告)日：2001-05-15

申请号：KR1019990046445

申请日：1999-10-25

Applicant: 엘지정보통신주식회사

Inventor： 김길남

IPC: H04L12/28

Abstract: PURPOSE: A testing apparatus and a method using an MRCU-LAN in a testing system of equipment are provided to be easily adapted to a system using a stream type socket interface and distribute a downloading load of a work station by facilitating repeatedly monitoring and downloading an operation state of a testing-target equipment in a development stage wanting an operation state testing by using an MRCU-LAN serial interface and an Ethernet interface. CONSTITUTION: A plurality of testing-target equipment(32) are respectively connected through an RS-232C interface to an MRCU-LAN(31). The MRCU-LAN(31) is connected through the RS-232C interface to the plurality of testing-target equipment(32) and connected to networks(21-29) constructed for testing the equipment through a TCP/IP interface. Accordingly, by controlling an input and an output of a test data for checking an operation state of the plurality of testing-target equipment(32) and an output data for the testing result, the operation is monitored and downloaded. A server work station(25) is connected through a socket, a TCP/IP interface, to the MRCU-LAN(31) and controls a connection request to the testing-target equipment(32) by a client on the networks(21-29). Accordingly, when the network and the testing-target equipment are successfully connected, the testing method using the MRCU-LAN is performed to test the equipment of a testing system. Thus, many users can simultaneously connect to the plurality of testing-target equipment(32), transmit a test data for testing, and monitor or download the operation of the testing-target equipment(32). At this time, a stream type socket interface of the MRCU-LAN(31) is used so that a connection state of a user for a specific testing-target equipment(32) is maintained without being cut off by a connection request by a different user.

Abstract translation: 目的：提供一种在设备测试系统中使用MRCU-LAN的测试装置和方法，以便容易地适应于使用流式插座接口的系统，并通过促进重复监视和下载工作站来下载工作站的下载负载 在开发阶段，通过使用MRCU-LAN串行接口和以太网接口来进行操作状态测试的测试目标设备的运行状态。 规定：多个测试目标设备（32）分别通过RS-232C接口连接到MRCU-LAN（31）。 MRCU-LAN（31）通过RS-232C接口连接到多个测试目标设备（32），并连接到通过TCP / IP接口测试设备而构建的网络（21-29）。 因此，通过控制用于检查多个测试对象设备（32）的操作状态的测试数据的输入和输出以及用于测试结果的输出数据，监视和下载操作。 服务器工作站（25）通过套接字TCP / IP接口连接到MRCU-LAN（31），并且由网络上的客户机（21-）控制对测试目标设备（32）的连接请求， 29）。 因此，当网络和测试目标设备成功连接时，执行使用MRCU-LAN的测试方法来测试测试系统的设备。 因此，许多用户可以同时连接到多个测试目标设备（32），发送用于测试的测试数据，并监视或下载测试对象设备（32）的操作。 此时，使用MRCU-LAN（31）的流式套接字接口，使得用于特定测试对象设备（32）的用户的连接状态被保持而不被不同的连接请求中断 用户。

公开(公告)号：KR1020000045539A

公开(公告)日：2000-07-25

申请号：KR1019980062099

申请日：1998-12-30

Applicant: 엘지정보통신주식회사

Inventor： 김길남

IPC: H03M1/66

CPC classification number: H03M1/661 ,  H03M1/0854 ,  H03M2201/65

Abstract: PURPOSE: An error reducing method is provided to enhance the reliability by reducing errors occurring during the quantization process of a D/A converter and using a low pass filter and a decimal calculator. CONSTITUTION: A method comprises the steps of: initializing a counter, a decimal place, an integer place, and a data value(S11); reading digital data to be analog-converted(S16); judging whether data of a designated decimal place of the read data is 1(S21); judging whether data of a designated integer place of a counter value is 1 in case that the data of the designated decimal place is 1(S26); increasing the designated decimal place and the designated integer place by 1 in case that the data of the designated integer place of the counter is 1(S31).

Abstract translation: 目的：提供一种减少误差的方法，通过减少在D / A转换器的量化过程中发生的误差，并使用低通滤波器和十进制计算器来增强可靠性。 构成：一种方法包括以下步骤：初始化计数器，小数位，整数位和数据值（S11）; 读取要进行模拟转换的数字数据（S16）; 判断读取数据的指定小数位数据是否为1（S21）; 在指定小数位的数据为1的情况下判断计数器值的指定整数位的数据是否为1（S26）; 如果计数器的指定整数位的数据为1，则将指定的小数位和指定的整数位增加1（S31）。