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KR900702695A - An encrypted telephone - Google Patents

An encrypted telephone

Info

Publication number
KR900702695A
KR900702695A KR1019900700622A KR900700622A KR900702695A KR 900702695 A KR900702695 A KR 900702695A KR 1019900700622 A KR1019900700622 A KR 1019900700622A KR 900700622 A KR900700622 A KR 900700622A KR 900702695 A KR900702695 A KR 900702695A
Authority
KR
South Korea
Prior art keywords
telephone
cryptographic
circuit
caller
hook detection
Prior art date
Application number
KR1019900700622A
Other languages
Korean (ko)
Inventor
제임스 앤더슨 존
Original Assignee
제임스 앤더슨 존
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 제임스 앤더슨 존 filed Critical 제임스 앤더슨 존
Publication of KR900702695A publication Critical patent/KR900702695A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/53—Generation of additional signals, e.g. additional pulses
    • H04M1/54—Arrangements wherein a dial or the like generates identifying signals, e.g. in party-line systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/663—Preventing unauthorised calls to a telephone set
    • H04M1/665—Preventing unauthorised calls to a telephone set by checking the validity of a code
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/57—Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set
    • H04M1/573—Line monitoring circuits for detecting caller identification

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Telephonic Communication Services (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Telephone Function (AREA)

Abstract

내용 없음No content

Description

암호식 전화기An encrypted telephone

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

제1도는 본 발명에 따른 장치의 시스템 블럭도이고, 제2도는 링검출기 및 원격 온-후크 검출기의 개략도이며, 제3도는 다이얼 펄스 카운터의 개략도이다.1 is a system block diagram of an apparatus according to the invention, FIG. 2 is a schematic diagram of a ring detector and a remote on-hook detector, and FIG. 3 is a schematic diagram of a dial pulse counter.

Claims (5)

호출자가 상대방의 전화번호를 입력하고, 링신호가 울린후 호출자가 암호번호를 입력시키면 수신단에서 특정의 예정된 톤이 발생되어 통화하고자하는 수화자 또는 호출자의 신원을 확인함을 특징으로 하는 암호식 전화기.When the caller enters the other party's phone number, the ringer rings and the caller enters the password number, a specific scheduled tone is generated at the receiving end to verify the identity of the called party or caller. . 제1항에 있어서, 상기의 암호번호는 용이하게 변경됨을 특징으로 하는 암호식 전화기.The telephone set according to claim 1, wherein the password number is easily changed. 제2항에 있어서, 상기의 전화기는 전화단자와 전화기 또는 인터컴 장치 사이에 연결됨을 특징으로 하는 암호식 전화기.3. A cryptographic telephone according to claim 2, wherein said telephone is connected between a telephone terminal and a telephone or intercom device. 제3항에 있어서, 상기의 전화기는 링검출기, 펄스 카운터회로, 음향 발생회로, 원격 온-후크 검출회로 및 국부 오프-후크 검출회로를 포함하는 서브 회로로 구성됨을 특징으로 하는 암호식 전화기.4. A cryptographic telephone according to claim 3, wherein said telephone comprises a sub circuit including a ring detector, a pulse counter circuit, a sound generating circuit, a remote on-hook detection circuit and a local off-hook detection circuit. 제1도 내지 제6도를 참조하여 기술된 바와 같은 암호식 전화기.A cryptographic telephone as described with reference to FIGS. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900700622A 1988-07-25 1989-04-07 An encrypted telephone KR900702695A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPI943088 1988-07-25
AUPI9430 1988-07-25
PCT/AU1989/000152 WO1990001236A1 (en) 1988-07-25 1989-04-07 Personal signalling telephone

Publications (1)

Publication Number Publication Date
KR900702695A true KR900702695A (en) 1990-12-08

Family

ID=3773234

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900700622A KR900702695A (en) 1988-07-25 1989-04-07 An encrypted telephone

Country Status (4)

Country Link
EP (1) EP0423131A4 (en)
JP (1) JPH03501674A (en)
KR (1) KR900702695A (en)
WO (1) WO1990001236A1 (en)

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US6618668B1 (en) 2000-04-26 2003-09-09 Arrivalstar, Inc. System and method for obtaining vehicle schedule information in an advance notification system
US6278936B1 (en) 1993-05-18 2001-08-21 Global Research Systems, Inc. System and method for an advance notification system for monitoring and reporting proximity of a vehicle
US6952645B1 (en) 1997-03-10 2005-10-04 Arrivalstar, Inc. System and method for activation of an advance notification system for monitoring and reporting status of vehicle travel
US6700507B2 (en) 1993-05-18 2004-03-02 Arrivalstar, Inc. Advance notification system and method utilizing vehicle signaling
US6748318B1 (en) 1993-05-18 2004-06-08 Arrivalstar, Inc. Advanced notification systems and methods utilizing a computer network
ES2103187B1 (en) * 1994-10-24 1998-04-01 Gorrochategui Grajirena D Javi TWO-WIRE COMMUNICATION SYSTEM, FOR AUTOMATIC GOALKEEPERS.
GB2308038B (en) * 1995-12-07 2000-07-19 Nokia Mobile Phones Ltd Telephone apparatus with calling line identification
US6975998B1 (en) 2000-03-01 2005-12-13 Arrivalstar, Inc. Package delivery notification system and method
US7119716B2 (en) 2003-05-28 2006-10-10 Legalview Assets, Limited Response systems and methods for notification systems for modifying future notifications
US7561069B2 (en) 2003-11-12 2009-07-14 Legalview Assets, Limited Notification systems and methods enabling a response to change particulars of delivery or pickup

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US3514548A (en) * 1967-04-12 1970-05-26 Priva Phone Inc Telephone apparatus for discriminating between desired and undesired calls
IT953541B (en) * 1972-03-22 1973-08-10 Siemens Spa Italiana SYSTEM FOR DISPLAYING THE NUMBER OF THE CALLED USER ON THE TELEPHONE DEVICE OF THE CALLED USER
US3829616A (en) * 1974-06-28 1974-08-13 Int Mobile Machines Ringer blocking attachment for telephones
CH619332A5 (en) * 1976-02-02 1980-09-15 Intertel Ii Inc Signal-controlled system for optional blocking or unblocking of a transmission line, and use of the system
GB2019698B (en) * 1978-04-20 1982-04-21 Feedback Ltd Telephone number memory and indicator system
US4266098A (en) * 1978-11-03 1981-05-05 Novak Albert P Device to automatically screen incoming telephone calls, determine the identity of the caller and process the call accordingly
US4304968A (en) * 1979-09-24 1981-12-08 Klausner Industries Telephone electronic answering device
GB2062410A (en) * 1979-10-25 1981-05-20 Standard Telephones Cables Ltd Call barring arrangement
US4387272A (en) * 1981-07-31 1983-06-07 Marcelo Castro Method and apparatus for controlling a subscriber phone system including at least one automatic phone-answering machine
JPS592474A (en) * 1982-06-28 1984-01-09 Yumiko Tanaka Automatic telephone set
US4446334A (en) * 1983-01-31 1984-05-01 Groff James W Telephone number coding device
US4508937A (en) * 1983-02-28 1985-04-02 At&T Information Systems Inc. Method and circuitry for encoding telephone ringing signals
US4491691A (en) * 1983-02-28 1985-01-01 At&T Bell Laboratories Electronic tone ringer
JPS6046160A (en) * 1983-08-23 1985-03-12 Nippon Resuko:Kk Telephone device
JPS60253360A (en) * 1983-12-05 1985-12-14 Nippo Tsushin Kogyo Kk Communication system
JPS60144055A (en) * 1984-01-06 1985-07-30 Nec Corp Telephone set
US4598179A (en) * 1984-06-28 1986-07-01 Sakura Telecommunications, Inc. Telephone privacy system
JPS6143051A (en) * 1984-08-07 1986-03-01 Nec Corp Telephone set circuit
JPS6166449A (en) * 1984-09-10 1986-04-05 Matsushita Electric Ind Co Ltd Telephone set
US4639552A (en) * 1985-03-08 1987-01-27 Leon Hall Apparatus for converting a standard telephone to an unlisted number telephone
US4674115A (en) * 1985-09-20 1987-06-16 Jabil Circuit Company Programmable telephone switcher
FR2620886A1 (en) * 1987-09-17 1989-03-24 Parienti Raoul Discriminator of telephone calls

Also Published As

Publication number Publication date
JPH03501674A (en) 1991-04-11
EP0423131A1 (en) 1991-04-24
EP0423131A4 (en) 1992-05-20
WO1990001236A1 (en) 1990-02-08

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Legal Events

Date Code Title Description
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19900324

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid