JPS5728440A - Transmission system of control signal - Google Patents

Transmission system of control signal

Info

Publication number
JPS5728440A
JPS5728440A JP10347980A JP10347980A JPS5728440A JP S5728440 A JPS5728440 A JP S5728440A JP 10347980 A JP10347980 A JP 10347980A JP 10347980 A JP10347980 A JP 10347980A JP S5728440 A JPS5728440 A JP S5728440A
Authority
JP
Japan
Prior art keywords
control signal
notation counter
output
notation
counter
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.)
Granted
Application number
JP10347980A
Other languages
Japanese (ja)
Other versions
JPS6221459B2 (en
Inventor
Tomonori Okada
Junichi Shioda
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 JP10347980A priority Critical patent/JPS5728440A/en
Publication of JPS5728440A publication Critical patent/JPS5728440A/en
Publication of JPS6221459B2 publication Critical patent/JPS6221459B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To detect a control signal at reception side without error easily, by transmitting the data of fixed pattern as a control signal. CONSTITUTION:At the transmission side, a data (b) in which pulses of ''1'' or ''0'' are consecutive is transmitted as a control signal. At the reception side, a conversion circuit 26 converts a reception signal into an RZ code (c), and pulses of ''1s'' in the RZ code (c) are counted with an m-notation counter 22 reset with the output (d) of an n-notation counter 21. The output (d) of the n-notation counter 21 and the output (e) of the m-notation counter 22 are compared at a comparator 23, and the reception of the control signal (b) is judged only when the output (e) of the m-notation counter 22 is given to the comparator 23. In case of a voice signal, since ''1'' and ''0'' are produced in the 50% probability, the relation between the number of stages (n) of the n-notation counter 21 and that of (m) of the m-notation counter 22 is taken as n>(m-1).
JP10347980A 1980-07-28 1980-07-28 Transmission system of control signal Granted JPS5728440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10347980A JPS5728440A (en) 1980-07-28 1980-07-28 Transmission system of control signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10347980A JPS5728440A (en) 1980-07-28 1980-07-28 Transmission system of control signal

Publications (2)

Publication Number Publication Date
JPS5728440A true JPS5728440A (en) 1982-02-16
JPS6221459B2 JPS6221459B2 (en) 1987-05-13

Family

ID=14355140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10347980A Granted JPS5728440A (en) 1980-07-28 1980-07-28 Transmission system of control signal

Country Status (1)

Country Link
JP (1) JPS5728440A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59187074A (en) * 1983-04-06 1984-10-24 Hitachi Chem Co Ltd Base material for friction material
JPS59187073A (en) * 1983-04-06 1984-10-24 Hitachi Chem Co Ltd Base material for friction material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59187074A (en) * 1983-04-06 1984-10-24 Hitachi Chem Co Ltd Base material for friction material
JPS59187073A (en) * 1983-04-06 1984-10-24 Hitachi Chem Co Ltd Base material for friction material
JPS6026519B2 (en) * 1983-04-06 1985-06-24 日立化成工業株式会社 Base material for friction materials
JPS6027705B2 (en) * 1983-04-06 1985-07-01 日立化成工業株式会社 Base material for friction materials

Also Published As

Publication number Publication date
JPS6221459B2 (en) 1987-05-13

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