KR930011584A - Keyphone system with variable frequency of ring signal - Google Patents

Keyphone system with variable frequency of ring signal Download PDF

Info

Publication number
KR930011584A
KR930011584A KR1019910019744A KR910019744A KR930011584A KR 930011584 A KR930011584 A KR 930011584A KR 1019910019744 A KR1019910019744 A KR 1019910019744A KR 910019744 A KR910019744 A KR 910019744A KR 930011584 A KR930011584 A KR 930011584A
Authority
KR
South Korea
Prior art keywords
dial
frequency
dtmf
circuit
speaker
Prior art date
Application number
KR1019910019744A
Other languages
Korean (ko)
Other versions
KR940005520B1 (en
Inventor
김종성
Original Assignee
백중영
금성통신 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 백중영, 금성통신 주식회사 filed Critical 백중영
Priority to KR1019910019744A priority Critical patent/KR940005520B1/en
Publication of KR930011584A publication Critical patent/KR930011584A/en
Application granted granted Critical
Publication of KR940005520B1 publication Critical patent/KR940005520B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Telephonic Communication Services (AREA)

Abstract

내용 없음No content

Description

링 신호의 주파수 가변 가능한 키폰 시스템Keyphone system with variable frequency of ring signal

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

제1도는 종래의 키폰 시스템의 블록도.1 is a block diagram of a conventional keyphone system.

제2도는 본 발명에 따른 일실시예의 블록도.2 is a block diagram of one embodiment according to the present invention.

제3도는 DTMF 다이얼 매트릭스.3 is a DTMF dial matrix.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

21 : 송신회로 22 : CPU21: transmitting circuit 22: CPU

24 : 스피커 구동회로 26 : DTMF 다이얼 발생회로24 speaker driving circuit 26 DTMF dial generating circuit

27 : LCD 모듈 28 : 다이얼 버튼 회로27: LCD module 28: dial button circuit

Claims (1)

키폰 시스템에 있어서, CPU로부터 임의의 코드가 입력될 때 DTMF 다이얼 매트릭스에서 미리 설정된 구분 가능한 7가지 주파수중 해당 주파수가 발생하도록 되어 있는 DTMF 다이얼 발생 회로와, 상기 DTMF 다이얼 발생회로의 DTMF 다이얼 매트릭스에서 7가지 주파수를 선택하기 위한 다이얼 버튼 회로와, 7가지 주파수 선택시 사용자를 안내하기 위해 일정한 정보를 표시하는 LCD 모듈과, 상기 다이얼 버튼 회로의 다이얼 버튼을 누를때 이 데이터를 상기 CPU를 통해 전달받아 해당 단말기 번호와 함께 기억하고 있는 주장치와, 상기 DTMF 다이얼 발생회로로부터의 선택 주파수를 스피커로 송출하도록 구동시키는 스피커 구동회로로 구비되어 사용자가 선택한 주파수로 착신 링을 울리도록 되어 있는 링 신호의 주파수가 가변 가능한 키폰 시스템.In a key phone system, a DTMF dial generating circuit is configured to generate a corresponding frequency among seven distinguishable frequencies preset in the DTMF dial matrix when an arbitrary code is input from the CPU, and 7 in the DTMF dial matrix of the DTMF dial generating circuit. A dial button circuit for selecting branch frequencies, an LCD module for displaying constant information to guide the user when seven frequencies are selected, and receiving this data through the CPU when the dial button of the dial button circuit is pressed A main device memorized together with the terminal number and a speaker drive circuit for driving the speaker to transmit the selected frequency from the DTMF dial generating circuit to the speaker, the frequency of the ring signal being ringed at the frequency selected by the user is variable. Keyphone system available. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910019744A 1991-11-07 1991-11-07 Keyphone system with changeable ring signals KR940005520B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910019744A KR940005520B1 (en) 1991-11-07 1991-11-07 Keyphone system with changeable ring signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910019744A KR940005520B1 (en) 1991-11-07 1991-11-07 Keyphone system with changeable ring signals

Publications (2)

Publication Number Publication Date
KR930011584A true KR930011584A (en) 1993-06-24
KR940005520B1 KR940005520B1 (en) 1994-06-20

Family

ID=19322408

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910019744A KR940005520B1 (en) 1991-11-07 1991-11-07 Keyphone system with changeable ring signals

Country Status (1)

Country Link
KR (1) KR940005520B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487186B1 (en) * 1997-07-09 2005-07-18 삼성전자주식회사 Ring service method by extension subscriber in simple exchange system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487186B1 (en) * 1997-07-09 2005-07-18 삼성전자주식회사 Ring service method by extension subscriber in simple exchange system

Also Published As

Publication number Publication date
KR940005520B1 (en) 1994-06-20

Similar Documents

Publication Publication Date Title
KR930022805A (en) Universal authentication device for use over a telephone line
KR880005772A (en) Telephone system
KR890006011A (en) Cordless Telephone Device
KR930011584A (en) Keyphone system with variable frequency of ring signal
KR850002903A (en) Terminal processing device
KR910015131A (en) A cordless phone device
KR900002584A (en) Wireless line control method
KR880002347A (en) Phone with Speed Dial Function
KR890006024A (en) Button phone
KR960027985A (en) Caller Information Receiver of Key Phone System
KR950026158A (en) Speed Dialing Device and Method of Cordless Telephone
KR940017300A (en) Specific number ring tone alarm function in vibration mode of wireless page receiver
KR940010609A (en) Single-axis dial driving method
KR930015568A (en) Missed Call Key Phone
KR930015452A (en) Matching method of data communication speed in digital simple switching system
KR950007359A (en) Dial control of the telephone
KR900016930A (en) Alarm device using wireless call function of telephone communication network
KR970024659A (en) How to Implement Text Input and Send Function in Pager
KR920022731A (en) Telephone device
KR920022732A (en) Telephone device
KR960043580A (en) Simple pager calling device of household walkie-talkie
KR940017517A (en) How to display phone number of optical dial phone
KR940013043A (en) Customer Information Service Method
KR960009541A (en) Text recognition phone
KR950002506A (en) PCM data tester of electronic exchanger voice processing device

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19990313

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee