JPS6462943A - Telephone set - Google Patents

Telephone set

Info

Publication number
JPS6462943A
JPS6462943A JP21916887A JP21916887A JPS6462943A JP S6462943 A JPS6462943 A JP S6462943A JP 21916887 A JP21916887 A JP 21916887A JP 21916887 A JP21916887 A JP 21916887A JP S6462943 A JPS6462943 A JP S6462943A
Authority
JP
Japan
Prior art keywords
handset
cord
opticalsignal
light emitting
emitting element
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP21916887A
Other languages
Japanese (ja)
Inventor
Harushige Urata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP21916887A priority Critical patent/JPS6462943A/en
Publication of JPS6462943A publication Critical patent/JPS6462943A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent invasion of noise due to electromagnetic induction or electric shock by connecting a handset cord by an optical fiber. CONSTITUTION:A received electric signal is converted into an opticalsignal by a light emitting element drive circuit 11 and a light emitting element 12 and listened to as a sound wave via an optoacoustic conversion means 21. Moreover, the voice to the handset 20 is sent to a photodetector 14 as an opticalsignal modulated based on its sound pressure and becomes a transmitted electric signal to a telephone set circuit. In this case, since the cord 30 of handset consists of optical fibers 31,32, 33, no noise is invaded due to electromagnetic induction and no electric shock is caused due to damaged cord 30.
JP21916887A 1987-09-03 1987-09-03 Telephone set Pending JPS6462943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21916887A JPS6462943A (en) 1987-09-03 1987-09-03 Telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21916887A JPS6462943A (en) 1987-09-03 1987-09-03 Telephone set

Publications (1)

Publication Number Publication Date
JPS6462943A true JPS6462943A (en) 1989-03-09

Family

ID=16731266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21916887A Pending JPS6462943A (en) 1987-09-03 1987-09-03 Telephone set

Country Status (1)

Country Link
JP (1) JPS6462943A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5796504A (en) * 1996-03-13 1998-08-18 Hughes Electronics Fiber-optic telemetry system and method for large arrays of sensors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5796504A (en) * 1996-03-13 1998-08-18 Hughes Electronics Fiber-optic telemetry system and method for large arrays of sensors
US6043917A (en) * 1996-03-13 2000-03-28 Hughes Electronics Corporation Passive electro-optical acoustic sensor

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