JPS52125206A - Display control circuit - Google Patents

Display control circuit

Info

Publication number
JPS52125206A
JPS52125206A JP4212376A JP4212376A JPS52125206A JP S52125206 A JPS52125206 A JP S52125206A JP 4212376 A JP4212376 A JP 4212376A JP 4212376 A JP4212376 A JP 4212376A JP S52125206 A JPS52125206 A JP S52125206A
Authority
JP
Japan
Prior art keywords
display control
control circuit
circuit
display
enable
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
JP4212376A
Other languages
Japanese (ja)
Inventor
Osamu Enomoto
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
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4212376A priority Critical patent/JPS52125206A/en
Publication of JPS52125206A publication Critical patent/JPS52125206A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/82—Line monitoring circuits for call progress or status discrimination

Landscapes

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

Abstract

PURPOSE:To enable the display control circuit reducing one pair than the conventional systems, by providing the circuit detecting the change in current value in the communicating lines and by using the output of this circuit as the control signal of the display circuit.
JP4212376A 1976-04-14 1976-04-14 Display control circuit Pending JPS52125206A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4212376A JPS52125206A (en) 1976-04-14 1976-04-14 Display control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4212376A JPS52125206A (en) 1976-04-14 1976-04-14 Display control circuit

Publications (1)

Publication Number Publication Date
JPS52125206A true JPS52125206A (en) 1977-10-20

Family

ID=12627163

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4212376A Pending JPS52125206A (en) 1976-04-14 1976-04-14 Display control circuit

Country Status (1)

Country Link
JP (1) JPS52125206A (en)

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