JPS55162646A - Pulse stuff synchronizing multiplex unit - Google Patents

Pulse stuff synchronizing multiplex unit

Info

Publication number
JPS55162646A
JPS55162646A JP7033879A JP7033879A JPS55162646A JP S55162646 A JPS55162646 A JP S55162646A JP 7033879 A JP7033879 A JP 7033879A JP 7033879 A JP7033879 A JP 7033879A JP S55162646 A JPS55162646 A JP S55162646A
Authority
JP
Japan
Prior art keywords
ram301
random
multiplex unit
transmission characteristics
phase comparator
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
JP7033879A
Other languages
Japanese (ja)
Inventor
Shinichi Koike
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 JP7033879A priority Critical patent/JPS55162646A/en
Publication of JPS55162646A publication Critical patent/JPS55162646A/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
    • H04J3/07—Synchronising arrangements using pulse stuffing for systems with different or fluctuating information rates or bit rates
    • H04J3/073—Bit stuffing, e.g. PDH

Landscapes

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

Abstract

PURPOSE:To prevent the deterioration of transmission characteristics by destuffing jitter in random processing, through random sequence of output generation of phase comparator. CONSTITUTION:RAM301 having capacity of 2<n>-1(n>=3) is connected at the output terminal 215 of the phase comparator of the pulse stuff synchronizing multiplexer. The binary counter 302 of 2<n>-1 frequency division connected to the frame pulse input 311 and the PN code generator 303 are coupled with the RAM301. Thus, the phase comparison output is read out at rondom with the readout address from the RAM301 and the PN coder 303, the destuffing jitter can be made random and the degradation of the transmission characteristics can be prevented.
JP7033879A 1979-06-05 1979-06-05 Pulse stuff synchronizing multiplex unit Pending JPS55162646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7033879A JPS55162646A (en) 1979-06-05 1979-06-05 Pulse stuff synchronizing multiplex unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7033879A JPS55162646A (en) 1979-06-05 1979-06-05 Pulse stuff synchronizing multiplex unit

Publications (1)

Publication Number Publication Date
JPS55162646A true JPS55162646A (en) 1980-12-18

Family

ID=13428523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7033879A Pending JPS55162646A (en) 1979-06-05 1979-06-05 Pulse stuff synchronizing multiplex unit

Country Status (1)

Country Link
JP (1) JPS55162646A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764941A (en) * 1987-05-22 1988-08-16 American Telephone And Telegraph Company, At&T Bell Laboratories Digital frame synchronizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764941A (en) * 1987-05-22 1988-08-16 American Telephone And Telegraph Company, At&T Bell Laboratories Digital frame synchronizer

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