KR870010713A - Method and circuit for automatic determination of transmission speed of modem - Google Patents

Method and circuit for automatic determination of transmission speed of modem Download PDF

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Publication number
KR870010713A
KR870010713A KR1019860003352A KR860003352A KR870010713A KR 870010713 A KR870010713 A KR 870010713A KR 1019860003352 A KR1019860003352 A KR 1019860003352A KR 860003352 A KR860003352 A KR 860003352A KR 870010713 A KR870010713 A KR 870010713A
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KR
South Korea
Prior art keywords
checking
data
speed
input
unit
Prior art date
Application number
KR1019860003352A
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Korean (ko)
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KR890002479B1 (en
Inventor
조태영
Original Assignee
삼성전자 주식회사
한형수
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Application filed by 삼성전자 주식회사, 한형수 filed Critical 삼성전자 주식회사
Priority to KR1019860003352A priority Critical patent/KR890002479B1/en
Publication of KR870010713A publication Critical patent/KR870010713A/en
Application granted granted Critical
Publication of KR890002479B1 publication Critical patent/KR890002479B1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00Arrangements for synchronising receiver with transmitter
    • H04L7/04Speed or phase control by synchronisation signals

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)

Abstract

내용 없음No content

Description

모뎀의 전송속도 자동 결정방법 및 회로.Automatic transmission method and circuit of modem.

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

제2도는 본 발명에 따른 제1도의 구체회로도.2 is a detailed circuit diagram of FIG. 1 according to the present invention.

Claims (2)

모뎀의 보우속도 결정에 있어서, 단말기로 부터 명령신호나 “AT”신호가 디지탈 신호로 R S-232방식에 의해 전송라인을 통해 완충되어 입력되는 입력부(10)와,In determining the baud rate of the modem, a command signal or an "AT" signal is input from the terminal as a digital signal buffered through a transmission line by an R S-232 method; 프로그램과 보우속도 결정테이블이 설정되어 있는 메모리부와 전송을 동기시키기 위한 2가지 플랙과 입·출력 레지스터를 갖는 범용비동기식 송수신 장치(UART)가 구성되어 상기 입력부(10)로부터 입력되는 신호를 받아 자동으로 프로그램에 의해 설정된 테이블에서 입력치와 비교하여 보우속도가 결정되어 UART에 세팅되는 마이콤부(20)와,A universal asynchronous transmission / reception device (UART) having two flags and a input / output register for synchronizing transmissions with a memory unit having a program and a baud rate determination table set up are configured to automatically receive a signal input from the input unit 10. The microcomputer 20 and the baud rate is determined by comparing with the input value in the table set by the program and set in the UART, 상기 마이콤부(20)로부터 데이타수신 및 속도와 기능에 따른 표시용 데이타를 래치하는 래치부(30)와,A latch unit 30 which latches data for display from the micom unit 20 and displays data according to speed and function; 상기 표시부(30)로 출력에 따라 각 속도 및 각 기능에 따른 표시장치가 디스플레이 되도록 구동되는 표시부(40)로 구성된 것을 특징으로 하는 모뎀의 전송속도 자동 결정회로.Automatic transmission circuit of the modem, characterized in that composed of a display unit 40 is driven to display the display device according to each speed and each function according to the output to the display unit (30). 모뎀의 보우속도 결정방법에 있어서,In the bow speed determination method of the modem, 입력부(10)으로 부터 입력되는 “AT”신호의 데이타포멜의 시작비트부터 “로우”폭을 카운트하여 체크하는 제1수단과,First means for counting and checking the "low" width from the start bit of the dataform of the "AT" signal input from the input unit 10, 상기 제1 수단의 시작비트 다음 부터 비트1 부터 “하이”폭을 채크하는 제2수단과,Second means for checking a “high” width from bit 1 after the start bit of the first means; 상기 제 1,2수단에서 테이블된 데이타를 체크한후 “A” 데이타 포멜 체크에 의해 속도를 세팅하는 제 3수단과,Third means for setting the speed by checking the data tabled in the first and second means and then checking the data of " A " 상기제 1, 2수단에서 테이블된 데이타와 체크한후 제 3수단의 “A”가 아닐때 재다이얼링시 “1”를 채크하는 제 4수단과, 상기 제 1-4수단으로부터 “T”데이타포멜을 체크하여 “AT”의 공통부분에서 최종 속도를 결정하며 패리더를 체크하여 단말기와 속도 및 데이타포멧을 일치시키도록 하는 제 5 수단으로 구성된 것을 특징으로 하는 모뎀의 전송속도 자동 결정방법.A fourth means for checking "1" during redialing when checking with the data tabled in said first and second means and not "A" of said third means, and "T" data from the first to fourth means And determining a final speed at a common part of “AT” and checking the parity to match the speed and data format with the terminal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019860003352A 1986-04-30 1986-04-30 Communicating speed decision circuit KR890002479B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019860003352A KR890002479B1 (en) 1986-04-30 1986-04-30 Communicating speed decision circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019860003352A KR890002479B1 (en) 1986-04-30 1986-04-30 Communicating speed decision circuit

Publications (2)

Publication Number Publication Date
KR870010713A true KR870010713A (en) 1987-11-30
KR890002479B1 KR890002479B1 (en) 1989-07-10

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ID=19249709

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019860003352A KR890002479B1 (en) 1986-04-30 1986-04-30 Communicating speed decision circuit

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KR (1) KR890002479B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100447165B1 (en) * 2001-06-26 2004-09-04 엘지전자 주식회사 detecting method of communication speed in device through receiver signal detection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100447165B1 (en) * 2001-06-26 2004-09-04 엘지전자 주식회사 detecting method of communication speed in device through receiver signal detection

Also Published As

Publication number Publication date
KR890002479B1 (en) 1989-07-10

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