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JPS55109043A - Call piling system for optical data transmission - Google Patents

Call piling system for optical data transmission

Info

Publication number
JPS55109043A
JPS55109043A JP1533779A JP1533779A JPS55109043A JP S55109043 A JPS55109043 A JP S55109043A JP 1533779 A JP1533779 A JP 1533779A JP 1533779 A JP1533779 A JP 1533779A JP S55109043 A JPS55109043 A JP S55109043A
Authority
JP
Japan
Prior art keywords
signal
data
call
data signal
frequency
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
JP1533779A
Other languages
Japanese (ja)
Inventor
Kinichi Atsuya
Tsukumo Higeta
Hajime Kakehi
Yusaku Yamada
Yoshihide Watanabe
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 JP1533779A priority Critical patent/JPS55109043A/en
Publication of JPS55109043A publication Critical patent/JPS55109043A/en
Pending 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
    • H04M11/068—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using time division multiplex techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To obtain the digital signals by supplying both the data signal waveform and the call signal waveform to the modulator in the alternate switching and then giving the sampling with the frequency which is higher enough than the data signal frequency, thus amplifying the system constitution. CONSTITUTION:The data signal sent from data transmitter 1 is D/A-converted through modulator 21. And the call signal from telephone transmitter 11 is supplied directly to switch unit 22 since it is the analog signal. The both signals are switched in the time-division way through unit 22, and both the data signal and the call signal are sampled together at DELTAM modulator 23 and with the frequency which is higher enough than the frequency of the data signal. And one pulse of the data signal is converted into the digital signal of plural bits and then into the optical signal through photoelectric converter 2 to be converted again into the electric signal through photoelectric converter E2'. After this, the electric signal is converted into the analog signal through DELTAM demodulator 23' to be divided into the data signal and the call signal each through switch unit 22' to be sent to data receiver 1' and telephone receiver 11' directly each.
JP1533779A 1979-02-13 1979-02-13 Call piling system for optical data transmission Pending JPS55109043A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1533779A JPS55109043A (en) 1979-02-13 1979-02-13 Call piling system for optical data transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1533779A JPS55109043A (en) 1979-02-13 1979-02-13 Call piling system for optical data transmission

Publications (1)

Publication Number Publication Date
JPS55109043A true JPS55109043A (en) 1980-08-21

Family

ID=11885962

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1533779A Pending JPS55109043A (en) 1979-02-13 1979-02-13 Call piling system for optical data transmission

Country Status (1)

Country Link
JP (1) JPS55109043A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57191792A (en) * 1981-05-19 1982-11-25 Sharp Kk Marketing data processing system for vending machine
JPS57199087A (en) * 1981-05-30 1982-12-06 Sharp Kk Vending machine with optical fiber distribution
US4509212A (en) * 1983-03-10 1985-04-02 Corning Glass Works Multiple-user optical analyzer system using optical network for data transmission and control
JPS62161247A (en) * 1986-01-10 1987-07-17 Aihon Kk Interphone equipment
JP2009065989A (en) * 2009-01-08 2009-04-02 Kubota Corp Harvesting machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57191792A (en) * 1981-05-19 1982-11-25 Sharp Kk Marketing data processing system for vending machine
JPS57199087A (en) * 1981-05-30 1982-12-06 Sharp Kk Vending machine with optical fiber distribution
US4509212A (en) * 1983-03-10 1985-04-02 Corning Glass Works Multiple-user optical analyzer system using optical network for data transmission and control
JPS62161247A (en) * 1986-01-10 1987-07-17 Aihon Kk Interphone equipment
JP2009065989A (en) * 2009-01-08 2009-04-02 Kubota Corp Harvesting machine

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