JPS51126701A - Display of a key telephone - Google Patents

Display of a key telephone

Info

Publication number
JPS51126701A
JPS51126701A JP5034475A JP5034475A JPS51126701A JP S51126701 A JPS51126701 A JP S51126701A JP 5034475 A JP5034475 A JP 5034475A JP 5034475 A JP5034475 A JP 5034475A JP S51126701 A JPS51126701 A JP S51126701A
Authority
JP
Japan
Prior art keywords
display
key telephone
current
telephone
luminous
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
JP5034475A
Other languages
Japanese (ja)
Inventor
Tadashi Akiyama
Yuzo Izumitani
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5034475A priority Critical patent/JPS51126701A/en
Publication of JPS51126701A publication Critical patent/JPS51126701A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H04M9/003—Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Audible And Visible Signals (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To reduce the gross current to N X I (where I designates the current which runs in the luminous diode) by making luminous diodes luminesce selectively by serially connecting them within each telephone.
JP5034475A 1975-04-25 1975-04-25 Display of a key telephone Pending JPS51126701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5034475A JPS51126701A (en) 1975-04-25 1975-04-25 Display of a key telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5034475A JPS51126701A (en) 1975-04-25 1975-04-25 Display of a key telephone

Publications (1)

Publication Number Publication Date
JPS51126701A true JPS51126701A (en) 1976-11-05

Family

ID=12856288

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5034475A Pending JPS51126701A (en) 1975-04-25 1975-04-25 Display of a key telephone

Country Status (1)

Country Link
JP (1) JPS51126701A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0269095A (en) * 1988-09-03 1990-03-08 Nitsuko Corp Device for controlling current distribution to key telephone set of key telephone system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0269095A (en) * 1988-09-03 1990-03-08 Nitsuko Corp Device for controlling current distribution to key telephone set of key telephone system

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