JPS577651A - Control system for data communication - Google Patents

Control system for data communication

Info

Publication number
JPS577651A
JPS577651A JP8132780A JP8132780A JPS577651A JP S577651 A JPS577651 A JP S577651A JP 8132780 A JP8132780 A JP 8132780A JP 8132780 A JP8132780 A JP 8132780A JP S577651 A JPS577651 A JP S577651A
Authority
JP
Japan
Prior art keywords
control signal
data
antenna
modulation
channel
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
JP8132780A
Other languages
Japanese (ja)
Other versions
JPS634375B2 (en
Inventor
Kazu Moriyama
Masao Takaba
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.)
Kokusai Electric Corp
Original Assignee
Kokusai Electric Corp
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 Kokusai Electric Corp filed Critical Kokusai Electric Corp
Priority to JP8132780A priority Critical patent/JPS577651A/en
Publication of JPS577651A publication Critical patent/JPS577651A/en
Publication of JPS634375B2 publication Critical patent/JPS634375B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To secure data transmission of good quality by setting predictable combinations of the best frequency channels and antenna system successively and by transmitting data automatically in time-division mode. CONSTITUTION:The transmitting device of a fixed station sends a data signal over one channel (a) of two circuits from a transmission part 2 to a modulation part 3 and also sends a control signal over the other channel (b), and the modulation part 3 performs simultaneous modulation. This control signal is demodulated by a circuit 4 to be controlled, and then the contents of the control signal are recognized to send the control signal to each equipment. The data signal is inputted to a thus selected transmitter 5 to be transmitted from an antenna 7. The receiving device of the fixed station receives the control signal sent from a communication room at a circuit to be controlled, thereby selectively controlling receivers 16 and receiving antennas 18. Then, the reception output of the received antenna is sent to the demodulation part 13 of the communication room and a receiving data terminal equipment 11 reproduces the data.
JP8132780A 1980-06-18 1980-06-18 Control system for data communication Granted JPS577651A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8132780A JPS577651A (en) 1980-06-18 1980-06-18 Control system for data communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8132780A JPS577651A (en) 1980-06-18 1980-06-18 Control system for data communication

Publications (2)

Publication Number Publication Date
JPS577651A true JPS577651A (en) 1982-01-14
JPS634375B2 JPS634375B2 (en) 1988-01-28

Family

ID=13743286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8132780A Granted JPS577651A (en) 1980-06-18 1980-06-18 Control system for data communication

Country Status (1)

Country Link
JP (1) JPS577651A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60148238A (en) * 1984-01-12 1985-08-05 Kokusai Electric Co Ltd Polling communication method from fixed station switching automatically frequency and antenna to mobile station

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60148238A (en) * 1984-01-12 1985-08-05 Kokusai Electric Co Ltd Polling communication method from fixed station switching automatically frequency and antenna to mobile station

Also Published As

Publication number Publication date
JPS634375B2 (en) 1988-01-28

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