JPS647749A - Pushbutton telephone set - Google Patents

Pushbutton telephone set

Info

Publication number
JPS647749A
JPS647749A JP16115887A JP16115887A JPS647749A JP S647749 A JPS647749 A JP S647749A JP 16115887 A JP16115887 A JP 16115887A JP 16115887 A JP16115887 A JP 16115887A JP S647749 A JPS647749 A JP S647749A
Authority
JP
Japan
Prior art keywords
led
controlling part
button
incoming call
telephone set
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
JP16115887A
Other languages
Japanese (ja)
Inventor
Yoshinobu Tsukada
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP16115887A priority Critical patent/JPS647749A/en
Publication of JPS647749A publication Critical patent/JPS647749A/en
Pending legal-status Critical Current

Links

Landscapes

  • Telephone Set Structure (AREA)
  • Telephone Function (AREA)

Abstract

PURPOSE:To prevent a misoperation by providing a dial button with a two-tone LED, an incoming call detection circuit and a controlling part to light on the two-tone LED upon perceiving peripheral brightness. CONSTITUTION:When the peripheral brightness of a telephone set becomes of a specific darkness, a controlling part 5 perceives it through a sensor 3 and lights on all the two-tones LED 2. In dialing to call, when a dial button is pressed, a controlling part 3 judges and changes the lighting color of the LED 2 to correspond with a button 1. On the other hand, when brightness is not of the specific darkness and the LED is turned off, the LED 2 corresponding to the pressed button 1 is turned on. Further, when there is an incoming call, the controlling part 3 perceives it through an incoming call detection circuit 4 and all the LED 2 are flickered at a time. Thus, misoperation can be prevented.
JP16115887A 1987-06-30 1987-06-30 Pushbutton telephone set Pending JPS647749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16115887A JPS647749A (en) 1987-06-30 1987-06-30 Pushbutton telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16115887A JPS647749A (en) 1987-06-30 1987-06-30 Pushbutton telephone set

Publications (1)

Publication Number Publication Date
JPS647749A true JPS647749A (en) 1989-01-11

Family

ID=15729696

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16115887A Pending JPS647749A (en) 1987-06-30 1987-06-30 Pushbutton telephone set

Country Status (1)

Country Link
JP (1) JPS647749A (en)

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