JPS6485458A - Contactless dial telephone set - Google Patents

Contactless dial telephone set

Info

Publication number
JPS6485458A
JPS6485458A JP24070587A JP24070587A JPS6485458A JP S6485458 A JPS6485458 A JP S6485458A JP 24070587 A JP24070587 A JP 24070587A JP 24070587 A JP24070587 A JP 24070587A JP S6485458 A JPS6485458 A JP S6485458A
Authority
JP
Japan
Prior art keywords
light
telephone set
dialing
signal
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
JP24070587A
Other languages
Japanese (ja)
Inventor
Haruyuki Sato
Koichi Ota
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP24070587A priority Critical patent/JPS6485458A/en
Publication of JPS6485458A publication Critical patent/JPS6485458A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To attain dialing without direct finger contact by forming the dialing part by a photosensitvie means. CONSTITUTION:A light pen 5 is provided with a light emitting element 8 and a switch 9 lighting the element 8. The light pen 5 is removed from a telephone set 1 and the light emitting element 8 is moved to a position is opposition to a photodetector 7 in the order of dial number to depress a switch 9. The photodetector 7 senses an optical pulse from the light emitting element 8 to send a photodetection signal to a receiver built in the telephone set and the receiver identifies the dial number by using the photodetection signal. Since the optical signal from the light pen 5 is a special signal, the receiver discriminates the dialing signal from the background light such as light from a fluorescent light in a room. Thus, contactless dialing is applied and phe convenience of the telephone set is enhanced.
JP24070587A 1987-09-28 1987-09-28 Contactless dial telephone set Pending JPS6485458A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24070587A JPS6485458A (en) 1987-09-28 1987-09-28 Contactless dial telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24070587A JPS6485458A (en) 1987-09-28 1987-09-28 Contactless dial telephone set

Publications (1)

Publication Number Publication Date
JPS6485458A true JPS6485458A (en) 1989-03-30

Family

ID=17063478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24070587A Pending JPS6485458A (en) 1987-09-28 1987-09-28 Contactless dial telephone set

Country Status (1)

Country Link
JP (1) JPS6485458A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5276733A (en) * 1989-06-16 1994-01-04 Canon Kabushiki Kaisha System utilizing portable device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5276733A (en) * 1989-06-16 1994-01-04 Canon Kabushiki Kaisha System utilizing portable device

Similar Documents

Publication Publication Date Title
AU5867590A (en) Touch button light ring system
GB8820125D0 (en) Push button phone capable of sending to telephone line alphabetical characters
AU1029388A (en) Telephone having receive call indicating function and mute/light key
DE69229846D1 (en) Optical character recognition device with coordinate conversion function
DE2862135D1 (en) Light emitting and receiving diode, in particular for optical telecommunication
JPS6485458A (en) Contactless dial telephone set
ES2141111T3 (en) SYNTHETIC ARNT.
EP0448826B1 (en) Keyboard
EP0438670A3 (en) Light emitting type push button for telephone sets
CA2041568A1 (en) Support Structure Having Built-in Light Source
JPS57212856A (en) Terminal adaptor system
JPS5714705A (en) Detector for displacement
JPS5363903A (en) Wristwatch with pocket bell
EP0181051A3 (en) Telephone apparatus with speaker amplifier
JPS6457229A (en) Optical switch
JPS5435604A (en) Ringing system of push-button telephone set
KR910005743Y1 (en) Colored light and voice signal and mirror flash
KR880016950U (en) Phone button with luminous symbol integrally formed
JPS6462960A (en) Image sensor
JPS644149A (en) Display device for number of times of incoming call
JPS5485763A (en) Wristwatch with lighting device
JPS56160172A (en) Incoming circuit of public telephone set
KR960009474U (en) Dial button light emitting circuit of telephone
JPS6462946A (en) Telephone set with night light source automatic lighting device
JPS53132911A (en) Telephone set