KR970004353A - Modem's telephone line usage detector - Google Patents

Modem's telephone line usage detector Download PDF

Info

Publication number
KR970004353A
KR970004353A KR1019950015746A KR19950015746A KR970004353A KR 970004353 A KR970004353 A KR 970004353A KR 1019950015746 A KR1019950015746 A KR 1019950015746A KR 19950015746 A KR19950015746 A KR 19950015746A KR 970004353 A KR970004353 A KR 970004353A
Authority
KR
South Korea
Prior art keywords
telephone line
modem
control unit
present
detecting
Prior art date
Application number
KR1019950015746A
Other languages
Korean (ko)
Other versions
KR0157552B1 (en
Inventor
정준용
Original Assignee
김광호
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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950015746A priority Critical patent/KR0157552B1/en
Publication of KR970004353A publication Critical patent/KR970004353A/en
Application granted granted Critical
Publication of KR0157552B1 publication Critical patent/KR0157552B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop

Abstract

본 발명은 모뎀을 내장한 데이타 송/수신시스템에 관한 것이다. 본 발명은 모뎀을 제어하는 제어부와, 모뎀의 전화선에 연결되어, 전화선이 사용중인지의 여부를 감지하여 제어부에 통보하는 전화선 사용 감지부를 포함한다. 본 발명에 의한 전화선 사용 감지부는 포토커플러(Photocoupler)를 이용하여 현재 전화선의 사용여부를 감지해 낸다. 따라서, 본 발명은 사용자가 통화중일 때 본 발명의 시스템제어부는 다이얼링 시도를 중단하므로써 사용자가 안전하게 통화할 수 있도록 한다.The present invention relates to a data transmission / reception system incorporating a modem. The present invention includes a control unit for controlling a modem and a telephone line use detection unit connected to a telephone line of the modem and detecting whether the telephone line is in use and notifying the control unit. Telephone line use detection unit according to the present invention detects the use of the current telephone line using a photocoupler (Photocoupler). Therefore, the present invention allows the user to talk safely by stopping the dialing attempt when the user is busy.

Description

모뎀의 전화선 사용 감지장치.Modem's telephone line usage detector.

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

제2도는 본 발명에 의한 데이타 송/수신시스템을 나타낸 구성도, 제3도는 제2도에서 전화선 사용 감지부를 나타낸 회로도.2 is a block diagram showing a data transmission / reception system according to the present invention, and FIG. 3 is a circuit diagram showing a telephone line use detection unit in FIG.

Claims (3)

모뎀을 내장한 데이타 송/수신시스템에 있어서, 상기 모뎀을 제어하는 제어부; 및 상기 모뎀의 전화선에 연결되어, 전화선이 사용중인지의 여부를 감지하여 상기 제어부에 통보하는 전화선 사용 감지부를 포함하는 모뎀의 전화선 사용 감지장치.A data transmission / reception system with a modem, comprising: a control unit for controlling the modem; And a telephone line use detection unit connected to the telephone line of the modem and detecting whether the telephone line is in use and notifying the control unit. 제1항에 있어서, 상기 전화선 사용 감지부는 전화선에 연결되어 전류가 흐를 때 빛을 발하는 발광다이오드와, 출력단이 상기 제어부에 연결되어 상기 다이오드가 빛을 발할 때 전류가 흐르는 포토트랜지스터의 결합으로 이루어진 포토커플러로 구성된 것을 특징으로 하는 모뎀의 전화선 사용 감지장치.The photoelectric device of claim 1, wherein the telephone line use detecting unit comprises a light emitting diode connected to a telephone line and emitting light when current flows, and an output terminal connected to the control unit and a phototransistor through which current flows when the diode emits light. Telephone line use detection device of a modem, characterized in that consisting of a coupler. 제1항에 있어서, 상기 제어부는 상기 전화선 사용 감지부와 전화선이 사용중임을 감지할 때 모뎀을 이용한 전화통화 시도를 금지하는 것을 특징으로 하는 모뎀의 전화선 사용 감지장치.The apparatus of claim 1, wherein the controller prohibits a telephone call attempt using a modem when detecting that the telephone line use detecting unit and the telephone line are in use. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950015746A 1995-06-14 1995-06-14 Detection apparatus using a telephone line for modem KR0157552B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950015746A KR0157552B1 (en) 1995-06-14 1995-06-14 Detection apparatus using a telephone line for modem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950015746A KR0157552B1 (en) 1995-06-14 1995-06-14 Detection apparatus using a telephone line for modem

Publications (2)

Publication Number Publication Date
KR970004353A true KR970004353A (en) 1997-01-29
KR0157552B1 KR0157552B1 (en) 1998-12-15

Family

ID=19417113

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950015746A KR0157552B1 (en) 1995-06-14 1995-06-14 Detection apparatus using a telephone line for modem

Country Status (1)

Country Link
KR (1) KR0157552B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100284426B1 (en) * 1997-05-30 2001-03-02 구자홍 Telephone line access arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100284426B1 (en) * 1997-05-30 2001-03-02 구자홍 Telephone line access arrangement

Also Published As

Publication number Publication date
KR0157552B1 (en) 1998-12-15

Similar Documents

Publication Publication Date Title
SE9503196D0 (en) Telephone device for automatically forming a voice path of a speakerphone and control method therefor
KR930015410A (en) Method and device for monitoring power loss in communication system
KR970004353A (en) Modem's telephone line usage detector
KR970072871A (en) An apparatus and method for automatically recovering a call from a telephone terminal
KR100238539B1 (en) Circuit and method of detection of off-hook state
ATE304268T1 (en) COMBINATION DEVICE WITH FAX PART AND TELEPHONE PART AND WITH ßFAX ACTIVß SWITCH
KR890007665Y1 (en) Sensing circuit of exchange
JPS6027294A (en) Key telephone device
KR890016819A (en) Door phone interface circuit in key phone system
KR200301283Y1 (en) Ring / down unit with loop detection
KR0154459B1 (en) Apparatus and method for mutual calling using branched telephone set
KR100264541B1 (en) Automatic line possesive apparatus of telephone
KR200241108Y1 (en) exchanging system having a voice signal end alarming device
KR0177682B1 (en) Circuit for detecting tel-line status
JPS5624864A (en) Automatic dial transmitter with guard function
JPH089960Y2 (en) Fax machine
KR950002583B1 (en) Key-phone system
KR940003260A (en) Telephone and its automatic receiving method
KR970004462A (en) Abnormal state detection circuit of wireless telephone
KR970009113A (en) Electronic exchange system with power noise cancellation
KR930015479A (en) How to control dialing out of telephone
KR19980014944A (en) A call termination signal generating device
KR960032997A (en) Home automation (HA) channel connection device
KR940017483A (en) Power failure compensation method and device therefor
JPS6411452A (en) Automatic answer system for telephone set

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20050629

Year of fee payment: 8

LAPS Lapse due to unpaid annual fee