JPS56168462A - Data transmitting system - Google Patents

Data transmitting system

Info

Publication number
JPS56168462A
JPS56168462A JP7207780A JP7207780A JPS56168462A JP S56168462 A JPS56168462 A JP S56168462A JP 7207780 A JP7207780 A JP 7207780A JP 7207780 A JP7207780 A JP 7207780A JP S56168462 A JPS56168462 A JP S56168462A
Authority
JP
Japan
Prior art keywords
main signal
duration
transmitted
output
gain control
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
JP7207780A
Other languages
Japanese (ja)
Inventor
Masayuki Goto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP7207780A priority Critical patent/JPS56168462A/en
Publication of JPS56168462A publication Critical patent/JPS56168462A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/023—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse amplitude modulation

Landscapes

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

Abstract

PURPOSE:To ensure a correct and automatic gain control when the signal is transmitted from a DC through an optional speed of transmission, by transmitting the exclusive OR or a repetitive pulse having much narrower duration and the pulse duration of a main signal plus the main signal. CONSTITUTION:A repetitive pulse having a duration much narrower than the minimum duration of ''1'' or ''0'' of a main signal is produced from an oscillator 2 of a transmitter 9 and then applied to an exclusive OR circuit 3 along with the main signal. The output of the circuit 3 is transmitted to a receiver 10, and the transmitted signal receives an automatic gain control amplification through an automatic gain control amplifier 4. Then the output of amplification is integrated through an intergral network 5. The output of the network 5 is identified through a discriminator 6 at a certain level and then digitaized to reproduce the main signal.
JP7207780A 1980-05-29 1980-05-29 Data transmitting system Pending JPS56168462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7207780A JPS56168462A (en) 1980-05-29 1980-05-29 Data transmitting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7207780A JPS56168462A (en) 1980-05-29 1980-05-29 Data transmitting system

Publications (1)

Publication Number Publication Date
JPS56168462A true JPS56168462A (en) 1981-12-24

Family

ID=13478976

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7207780A Pending JPS56168462A (en) 1980-05-29 1980-05-29 Data transmitting system

Country Status (1)

Country Link
JP (1) JPS56168462A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0858179A (en) * 1995-06-22 1996-03-05 Toshiba Corp Document forming apparatus and document printing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0858179A (en) * 1995-06-22 1996-03-05 Toshiba Corp Document forming apparatus and document printing method

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