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JPS55147863A - Correcting system of dial pulse distortion - Google Patents

Correcting system of dial pulse distortion

Info

Publication number
JPS55147863A
JPS55147863A JP5525579A JP5525579A JPS55147863A JP S55147863 A JPS55147863 A JP S55147863A JP 5525579 A JP5525579 A JP 5525579A JP 5525579 A JP5525579 A JP 5525579A JP S55147863 A JPS55147863 A JP S55147863A
Authority
JP
Japan
Prior art keywords
value
dial signal
relay
frequency division
circuit
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
JP5525579A
Other languages
Japanese (ja)
Inventor
Shiro Kuzutani
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP5525579A priority Critical patent/JPS55147863A/en
Publication of JPS55147863A publication Critical patent/JPS55147863A/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
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To change the frequency division ratio of fundamental clocks to correct delay distortion of the dial signal dependent upon relay operations, by detecting connection and disconnection of the relay for signal output in case that fundametal clocks are frequency-divided to generate a prescribed dial signal. CONSTITUTION:Fundamental clocks are frequency-divided by dial signal generating circuit 3 to become a dial signal and turns on and off transistor Q1 to activate and inactivate relay R. By closing and opening contacts r1 and r2 of this relay R, the loop of telephone line L1 is connected and disconnected to transmit the dial signal, and simultaneously, this closed and open information is input to terminal IN4 of circuit 3. According to this input, circuit 3 decides whether the input value agrees with a prescribed value or not, and circuit 3 increases or reduces the frequency division value on the basis of the decision result to obtain a clock frequency division value where the input value agrees with the prescribed value. Then, this clock frequency division value is used after that.
JP5525579A 1979-05-08 1979-05-08 Correcting system of dial pulse distortion Pending JPS55147863A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5525579A JPS55147863A (en) 1979-05-08 1979-05-08 Correcting system of dial pulse distortion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5525579A JPS55147863A (en) 1979-05-08 1979-05-08 Correcting system of dial pulse distortion

Publications (1)

Publication Number Publication Date
JPS55147863A true JPS55147863A (en) 1980-11-18

Family

ID=12993480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5525579A Pending JPS55147863A (en) 1979-05-08 1979-05-08 Correcting system of dial pulse distortion

Country Status (1)

Country Link
JP (1) JPS55147863A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760763A (en) * 1980-09-29 1982-04-12 Fujitsu Ltd Dial pulse transmitting device
JPS5840969U (en) * 1981-09-08 1983-03-17 富士通株式会社 line control unit
JPS6072394A (en) * 1983-09-28 1985-04-24 Fujitsu Ltd digital impulse sender
KR101066101B1 (en) 2008-10-29 2011-09-20 유경수 Link Push Type Silicone Gun

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760763A (en) * 1980-09-29 1982-04-12 Fujitsu Ltd Dial pulse transmitting device
JPS5840969U (en) * 1981-09-08 1983-03-17 富士通株式会社 line control unit
JPS6072394A (en) * 1983-09-28 1985-04-24 Fujitsu Ltd digital impulse sender
KR101066101B1 (en) 2008-10-29 2011-09-20 유경수 Link Push Type Silicone Gun

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