JPS55161448A - Frame synchronizing system - Google Patents

Frame synchronizing system

Info

Publication number
JPS55161448A
JPS55161448A JP6839379A JP6839379A JPS55161448A JP S55161448 A JPS55161448 A JP S55161448A JP 6839379 A JP6839379 A JP 6839379A JP 6839379 A JP6839379 A JP 6839379A JP S55161448 A JPS55161448 A JP S55161448A
Authority
JP
Japan
Prior art keywords
frame
signal
synchronization
synchronizing
establish
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
JP6839379A
Other languages
Japanese (ja)
Inventor
Tadashi Akiba
Hisashi Morikawa
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 JP6839379A priority Critical patent/JPS55161448A/en
Publication of JPS55161448A publication Critical patent/JPS55161448A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0605—Special codes used as synchronising signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To shorten the frame releasing time, by adding the frame synchronizing signal to a specific pattern for synchronization and by transmitting them as a frame signal to establish frame synchronization in the receiving side in the frame synchronism acquisition process. CONSTITUTION:In case of occurrence of frame step-out in slave station B, a specific pattern is inserted to the position of the signal for information when frame signal generator 1 in master station A cannot establish synchronization by frame synchronizing circuit 2. Then, a frame signal is constituted by this pattern and the signal for frame synchronization and is transmitted to slave station B. In slave station B, the signal for frame synchronization is detected by frame synchronizing circuit 3 to extract the synchronizing signal. Then, frame signal reproducing circuit 4 reproduces a normal frame signal and transmits it to the master station. In the master station, the synchronizing signal is extracted from the frame signal to establish frame synchronization, and then, generator 1 stops insertion of the specific pattern and transmits the signal for information again.
JP6839379A 1979-05-31 1979-05-31 Frame synchronizing system Pending JPS55161448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6839379A JPS55161448A (en) 1979-05-31 1979-05-31 Frame synchronizing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6839379A JPS55161448A (en) 1979-05-31 1979-05-31 Frame synchronizing system

Publications (1)

Publication Number Publication Date
JPS55161448A true JPS55161448A (en) 1980-12-16

Family

ID=13372409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6839379A Pending JPS55161448A (en) 1979-05-31 1979-05-31 Frame synchronizing system

Country Status (1)

Country Link
JP (1) JPS55161448A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62269435A (en) * 1986-05-19 1987-11-21 Kokusai Electric Co Ltd Transmission method for frame synchronizing signal in vocoder system
JPS63185248A (en) * 1987-01-28 1988-07-30 Hitachi Ltd Frame synchronizing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62269435A (en) * 1986-05-19 1987-11-21 Kokusai Electric Co Ltd Transmission method for frame synchronizing signal in vocoder system
JPS63185248A (en) * 1987-01-28 1988-07-30 Hitachi Ltd Frame synchronizing system

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