KR880005782A - 전화기의 전원 절환 장치 - Google Patents

전화기의 전원 절환 장치

Info

Publication number
KR880005782A
KR880005782A KR1019870011197A KR870011197A KR880005782A KR 880005782 A KR880005782 A KR 880005782A KR 1019870011197 A KR1019870011197 A KR 1019870011197A KR 870011197 A KR870011197 A KR 870011197A KR 880005782 A KR880005782 A KR 880005782A
Authority
KR
South Korea
Prior art keywords
telephone
power switch
switch
power
Prior art date
Application number
KR1019870011197A
Other languages
English (en)
Other versions
KR910001734B1 (ko
Inventor
마사유끼 이이다
신이찌 쯔루후지
Original Assignee
상요덴기 가부시기가이샤
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 상요덴기 가부시기가이샤 filed Critical 상요덴기 가부시기가이샤
Publication of KR880005782A publication Critical patent/KR880005782A/ko
Application granted granted Critical
Publication of KR910001734B1 publication Critical patent/KR910001734B1/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
KR1019870011197A 1986-10-07 1987-10-06 전화기의 전원 절환 장치 KR910001734B1 (ko)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP23850586 1986-10-07
JP61-238504 1986-10-07
JP23850486 1986-10-07
JP61-238505 1986-10-07
JP24255486 1986-10-13
JP61-242554 1986-10-13

Publications (2)

Publication Number Publication Date
KR880005782A true KR880005782A (ko) 1988-06-30
KR910001734B1 KR910001734B1 (ko) 1991-03-22

Family

ID=27332592

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870011197A KR910001734B1 (ko) 1986-10-07 1987-10-06 전화기의 전원 절환 장치

Country Status (2)

Country Link
US (1) US4916735A (ko)
KR (1) KR910001734B1 (ko)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5381472A (en) * 1990-08-10 1995-01-10 Tamura Electric Works, Ltd. Power source control apparatus for telephone set
JPH0530502A (ja) * 1991-07-24 1993-02-05 Hitachi Ltd 一体型テレビ電話機
US5587735A (en) * 1991-07-24 1996-12-24 Hitachi, Ltd. Video telephone
EP0500091B1 (en) * 1991-02-20 1998-07-15 Hitachi, Ltd. Television telephone
JP2905616B2 (ja) * 1991-05-20 1999-06-14 シャープ株式会社 通信端末装置
DE69222479T2 (de) * 1991-07-15 1998-04-09 Hitachi Ltd Telekonferenzendstellengerät
DE69230298T2 (de) * 1991-07-15 2000-07-20 Hitachi Ltd Telekonferenzgerät
US5544243A (en) * 1993-05-17 1996-08-06 Vxi Corporation Telephone headset interface circuit
DE9417202U1 (de) * 1994-10-26 1995-02-16 Siemens Ag Stromversorgungseinrichtung für ein Telekommunikationsendgerät
DE19623827C1 (de) * 1996-06-14 1998-01-08 Siemens Ag Elektronische Sprechschaltungsanordnung
US6128384A (en) * 1997-12-22 2000-10-03 Vxi Corporation Self configuring telephone headset amplifier
FR2774839B1 (fr) * 1998-02-11 2000-06-23 Sagem Telecopieur comportant des moyens de prise de ligne a alimentation secourue
KR100480298B1 (ko) * 2001-10-13 2005-04-07 삼성전자주식회사 무 전원 전화 통화시 통화 안정화 전화장치 및 그 제어 방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232200A (en) * 1978-10-23 1980-11-04 United Networks, Inc. Dialing system
US4585904A (en) * 1982-02-05 1986-04-29 General Telephone Inc. Programmable computerized telephone call cost metering device
US4578540A (en) * 1982-12-20 1986-03-25 At&T Bell Laboratories Telecommunications systems
US4670628A (en) * 1984-04-19 1987-06-02 Boratgis James P Reprogrammable call forwarding device

Also Published As

Publication number Publication date
KR910001734B1 (ko) 1991-03-22
US4916735A (en) 1990-04-10

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
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: 20020313

Year of fee payment: 12

LAPS Lapse due to unpaid annual fee