JPS5599866A - Connection unit for communication line - Google Patents

Connection unit for communication line

Info

Publication number
JPS5599866A
JPS5599866A JP749679A JP749679A JPS5599866A JP S5599866 A JPS5599866 A JP S5599866A JP 749679 A JP749679 A JP 749679A JP 749679 A JP749679 A JP 749679A JP S5599866 A JPS5599866 A JP S5599866A
Authority
JP
Japan
Prior art keywords
units
circuits
lines
communication line
constitution
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
JP749679A
Other languages
Japanese (ja)
Inventor
Isamu Takano
Takuya Iwagami
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 JP749679A priority Critical patent/JPS5599866A/en
Publication of JPS5599866A publication Critical patent/JPS5599866A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0008—Synchronisation information channels, e.g. clock distribution lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To effectively perform the data transmission in near or intermediate distance with a simple line constitution, by providing the clock generator at either one of a pair of communication line connection units only, and using this output as the reception element timing for another unit. CONSTITUTION:The communication line connection units 200 and 250 are located between the first and second communication control units 110, 114 performing transmission and reception of data, and the data transmission communication lines 204, 254 and the timing signal communication lines 205, 255 are connected between the units 200 and 250. The units 200 and 250 to the lines 204 to 254 are provided respectively with the data transmission circuit 230, 290 and the timing reception circuit 240, 280. Further, the circuits 210, 270, 230, 290 are provided with the photo coupling circuits 213, 271, 234, 291, and the circuits 230 and 290 are provided with the clock generation circuits 232, 293 to simplify the constitution of the units 200, 250 and the lines 204, 254, 205 and 255.
JP749679A 1979-01-24 1979-01-24 Connection unit for communication line Pending JPS5599866A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP749679A JPS5599866A (en) 1979-01-24 1979-01-24 Connection unit for communication line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP749679A JPS5599866A (en) 1979-01-24 1979-01-24 Connection unit for communication line

Publications (1)

Publication Number Publication Date
JPS5599866A true JPS5599866A (en) 1980-07-30

Family

ID=11667374

Family Applications (1)

Application Number Title Priority Date Filing Date
JP749679A Pending JPS5599866A (en) 1979-01-24 1979-01-24 Connection unit for communication line

Country Status (1)

Country Link
JP (1) JPS5599866A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57204654A (en) * 1981-06-12 1982-12-15 Kokusai Electric Co Ltd Data transmitting system using data set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57204654A (en) * 1981-06-12 1982-12-15 Kokusai Electric Co Ltd Data transmitting system using data set

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