KR880005528A - How to determine terminal speed and format of modem using "AT" - Google Patents

How to determine terminal speed and format of modem using "AT" Download PDF

Info

Publication number
KR880005528A
KR880005528A KR1019860008789A KR860008789A KR880005528A KR 880005528 A KR880005528 A KR 880005528A KR 1019860008789 A KR1019860008789 A KR 1019860008789A KR 860008789 A KR860008789 A KR 860008789A KR 880005528 A KR880005528 A KR 880005528A
Authority
KR
South Korea
Prior art keywords
data
unit
modem
signal
checking
Prior art date
Application number
KR1019860008789A
Other languages
Korean (ko)
Inventor
조태영
Original Assignee
한형수
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한형수, 삼성전자 주식회사 filed Critical 한형수
Priority to KR1019860008789A priority Critical patent/KR880005528A/en
Publication of KR880005528A publication Critical patent/KR880005528A/en

Links

Landscapes

  • Communication Control (AREA)

Abstract

내용 없음No content

Description

"AT"를 이용한 모뎀의 터미널 속도외 포맷 결정방법How to determine format other than terminal speed of modem using "AT"

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명을 수행하기 위한 시스템 블럭도.1 is a system block diagram for carrying out the present invention.

제2도는 본 발명에 따른 제1도의 구체 회로도.2 is a detailed circuit diagram of FIG. 1 in accordance with the present invention.

제3도는 본 발명에 따른 흐름도.3 is a flow chart according to the present invention.

Claims (1)

퍼스널 컴퓨터로 직렬신호를 받으며 접속라인을 통해 신호를 주고 받을 수 있는 접속부(10)와, 컴퓨터의 상태나 제어에 의해 모뎀부의 상태에 따라 외부로 모터링 할수 있는 표시부(20)와, 상기 접속부(10)에서 출력하는 신호를 후술하는 주제어부(40)에서 인식할 수 있도록 충분한 신호로완충하는 드라이버부(30)와, 각 기능별로 모뎀의 제어 및 터미널의 신호와 상기 드라이버부(30)로부터 입력되는 컴퓨터의속도 및 데이타 포멧등을 인식하여 데이타를 비동기로 송수신할 수 있도록 제어하여 기능에 따라 운용상태를 표시부(20)로 통해 나타낼 수 있도록 프로그램에 따라 제어하여 제어 및 처리 데이타를 출력하는 주제어부(40)로 구성된 모뎀 시스템에 있어서, 데이타 터미널의 상태에 따라 A 또는 a의 시작 비트를 카운트 하여 저장하는 제1과정과, 상기 과정으로부터 저장된 데이타에서 고속모드를 체크하는 제2과정과, 상기 제1, 2과정으로부터 스톱, 데이타, 패리티무를 세트하는 제3과정과, 상기 과정으로부터 읽혀진 문자에서 시작 비트를 제외한 제3과정으로부터 세트된 제3과정을 체크하여속도를 결정하는 제4과정과, 주제어부의 비동기 송신부 직렬포트에서 스톱, 데이타, 다른 패리티를 설정하는 제5과정과, 소정기간 대기후 "T" 데이타에 고속인가를 체크하는 제 6과정과, T 또는 t를 체크하여 상기 제4과정으로 패리티 에러를 검출하여 데이타 포맷으로 결정하는 제7과정으로 하는 방법에서 특징이 있는 "AT"를 이용한 모뎀의 터미널 속도와 포맷 결정방법.A connection unit 10 capable of receiving a serial signal from a personal computer and transmitting and receiving a signal through a connection line, a display unit 20 capable of motoring to the outside according to the state of the modem unit by the state or control of the computer, and the connection unit ( 10) The driver unit 30 is a sufficient signal to be recognized by the main control unit 40 to be described later to the signal to be described later, the control of the modem for each function and the signal of the terminal and input from the driver unit 30 Recognizing the speed and data format of the computer to control the data to be transmitted and received asynchronously, the main control unit to output the control and processing data by controlling according to the program to display the operation state through the display unit 20 according to the function A modem system comprising: a first step of counting and storing a start bit of A or a according to a state of a data terminal; A second process of checking the fast mode from the data stored in the second process; a third process of setting stops, data, and parity from the first and second processes; and a third process excluding a start bit from a character read from the process. A fourth process of checking the third process to determine the speed, a fifth process of setting the stop, data, and other parity in the serial port of the asynchronous transmitter of the main controller, and checking whether the T-data is high speed after waiting for a predetermined period of time. And a seventh process of checking a T or t and determining a data format by detecting a parity error in the fourth process. The method of determining a terminal speed and a format of a modem using " AT " ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019860008789A 1986-10-20 1986-10-20 How to determine terminal speed and format of modem using "AT" KR880005528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019860008789A KR880005528A (en) 1986-10-20 1986-10-20 How to determine terminal speed and format of modem using "AT"

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019860008789A KR880005528A (en) 1986-10-20 1986-10-20 How to determine terminal speed and format of modem using "AT"

Publications (1)

Publication Number Publication Date
KR880005528A true KR880005528A (en) 1988-06-29

Family

ID=68838229

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019860008789A KR880005528A (en) 1986-10-20 1986-10-20 How to determine terminal speed and format of modem using "AT"

Country Status (1)

Country Link
KR (1) KR880005528A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100438980B1 (en) * 2001-05-02 2004-07-03 엘지산전 주식회사 Automatic baud rate detection apparatus and method of asynchronous communication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100438980B1 (en) * 2001-05-02 2004-07-03 엘지산전 주식회사 Automatic baud rate detection apparatus and method of asynchronous communication

Similar Documents

Publication Publication Date Title
KR890015137A (en) I / O control system
KR880005528A (en) How to determine terminal speed and format of modem using "AT"
KR910006831A (en) Controller for connecting peripheral devices with microcomputer
KR930017341A (en) Data reception control device and method of remote controller
KR940010580A (en) Interface circuit for data transmission control
US4606029A (en) Data transmission system
KR900013609A (en) Event Limit Inspection Structures for Integrated Circuits
KR880008172A (en) Data processing system with bus commands for another subsystem generated by one subsystem
KR100249171B1 (en) Method for detecting error in non-syncronus type data transmit and receive device
KR850006090A (en) Data transmission system
JPS63164554A (en) Automatic recognizing system for data speed
JPH10294772A (en) At command reception system
KR900013752A (en) Private Exchange System and Maintenance Virtual Terminal Connection Method
JPS61284148A (en) Detection for speed of no-procedure terminal
JP2776355B2 (en) Keyboard interface circuit
JP2945123B2 (en) Communications system
KR920006865A (en) Shared terminal management system and management method using memory card
JPS56168254A (en) Advance control system for input/output control unit
KR890001798B1 (en) Data signal processing apparatus
JPS56156981A (en) Bubble memory device
JPH04111637A (en) Data transmission speed automatic recognition device
JPS6049465A (en) Data transfer method between microcomputers
KR970032240A (en) Code data detection method of remote control signal
JPS62216439A (en) Method for deciding state of reception of high speed modem for facsimile
KR970049693A (en) Information processing device for integrated test and performance measurement of main computer

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination