JPS54156404A - Carrier information transmission system in multi-modem system - Google Patents

Carrier information transmission system in multi-modem system

Info

Publication number
JPS54156404A
JPS54156404A JP6514378A JP6514378A JPS54156404A JP S54156404 A JPS54156404 A JP S54156404A JP 6514378 A JP6514378 A JP 6514378A JP 6514378 A JP6514378 A JP 6514378A JP S54156404 A JPS54156404 A JP S54156404A
Authority
JP
Japan
Prior art keywords
carrier
unit
information transmission
semi
low speed
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
JP6514378A
Other languages
Japanese (ja)
Inventor
Masaki Kitamura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6514378A priority Critical patent/JPS54156404A/en
Publication of JPS54156404A publication Critical patent/JPS54156404A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE:To establish the semi-duplex transmission mode with a simple constitution, by picking up the specific pattern for carrier information transmission in the reception data of the low speed MODEM at the terminal unit side and outputting the carrier signal to the terminal unit. CONSTITUTION:The transmission request information at CPU 11 responds the carrier detection information of the terminal unit 16, to perform the operation of semi-duplex transmission mode between the units 16 for CPU 11. The pattern detector 17 is placed between the low speed MODEM 15 and the unit 16, the specific pattern for carrier information transmission in the reception data of the low speed MODEM 15 at the unit 16 side is picked up, and the carrier detection signal is outputted to the unit 16. Thus, the semi-duplex transmission mode is established with a simple constitution.
JP6514378A 1978-05-31 1978-05-31 Carrier information transmission system in multi-modem system Pending JPS54156404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6514378A JPS54156404A (en) 1978-05-31 1978-05-31 Carrier information transmission system in multi-modem system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6514378A JPS54156404A (en) 1978-05-31 1978-05-31 Carrier information transmission system in multi-modem system

Publications (1)

Publication Number Publication Date
JPS54156404A true JPS54156404A (en) 1979-12-10

Family

ID=13278357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6514378A Pending JPS54156404A (en) 1978-05-31 1978-05-31 Carrier information transmission system in multi-modem system

Country Status (1)

Country Link
JP (1) JPS54156404A (en)

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