JPS575461A - Electric power supply control system - Google Patents

Electric power supply control system

Info

Publication number
JPS575461A
JPS575461A JP7903980A JP7903980A JPS575461A JP S575461 A JPS575461 A JP S575461A JP 7903980 A JP7903980 A JP 7903980A JP 7903980 A JP7903980 A JP 7903980A JP S575461 A JPS575461 A JP S575461A
Authority
JP
Japan
Prior art keywords
switch
power supply
power
operator
state
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
JP7903980A
Other languages
Japanese (ja)
Inventor
Hiroshi Uehara
Naruhiro Fujii
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 JP7903980A priority Critical patent/JPS575461A/en
Publication of JPS575461A publication Critical patent/JPS575461A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/066—Telephone sets adapted for data transmision

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To suppress wasteful power consumption, by adding a means for preventing a power switch from being left on to a portable terminal device. CONSTITUTION:When the operator uses a portable terminal device, first a switch SW2 of a power supply 6 is turned on. Whe a telephone set is set to an audio coupler 1, first a microswitch S1 is closed, pwer supply is supplied to the audio coupler 1 and a printer 4 from the power supply 6, and a control section 8 detects that the switch S1 is closed and the power supply is applied to the printer 4 and transits to on-line state. Further, to prevent the operator from leaving the power switch S2 as on-state, the control section detects the off-state of the said switch S1 (end of on-line job) to produce alarm tone, and this alarm tone continues until the said power switch S2 is turned off to inform it to the operator.
JP7903980A 1980-06-13 1980-06-13 Electric power supply control system Pending JPS575461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7903980A JPS575461A (en) 1980-06-13 1980-06-13 Electric power supply control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7903980A JPS575461A (en) 1980-06-13 1980-06-13 Electric power supply control system

Publications (1)

Publication Number Publication Date
JPS575461A true JPS575461A (en) 1982-01-12

Family

ID=13678770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7903980A Pending JPS575461A (en) 1980-06-13 1980-06-13 Electric power supply control system

Country Status (1)

Country Link
JP (1) JPS575461A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60103961U (en) * 1983-12-20 1985-07-16 大東興業株式会社 Portable signal transmitter/receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60103961U (en) * 1983-12-20 1985-07-16 大東興業株式会社 Portable signal transmitter/receiver

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