SE9600256L - Digital transmission on parallel optics link - Google Patents

Digital transmission on parallel optics link

Info

Publication number
SE9600256L
SE9600256L SE9600256A SE9600256A SE9600256L SE 9600256 L SE9600256 L SE 9600256L SE 9600256 A SE9600256 A SE 9600256A SE 9600256 A SE9600256 A SE 9600256A SE 9600256 L SE9600256 L SE 9600256L
Authority
SE
Sweden
Prior art keywords
input
transmission
parallel
lines
random number
Prior art date
Application number
SE9600256A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9600256D0 (en
Inventor
Gunnar Forsberg
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9600256A priority Critical patent/SE9600256L/en
Publication of SE9600256D0 publication Critical patent/SE9600256D0/en
Priority to PCT/SE1997/000101 priority patent/WO1997027694A1/en
Priority to AU15630/97A priority patent/AU1563097A/en
Priority to TW86100890A priority patent/TW393835B/en
Publication of SE9600256L publication Critical patent/SE9600256L/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Dc Digital Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

Data arrives on parallel electrical lines (11) together with a clock signal for the data bits on another parallel line (13). Data on the various lines are scrambled, by being delivered to one input of XOR-gates (25) and a random number sequence from a random number generator (23) delivered to the other input thereof. The signals thus generated and coded are shaped in flip-flops (27) and are therefrom provided to transmitting elements (3) for being issued on parallel lines (1), for example individual optical fibers. The information on the parallel transmission lines (1) arrives to receiver elements (7) and is decoded by being provided to XOR-gates (20), to the other input of which the random number sequence is fed that has been transmitted on one of the transmission links (1). The decoded pulse signals are uniformly shaped in flip-flops (33) to the other input of which a regenerated clock signal is fed that has been obtained from a clock extraction circuit (25). By using such a scrambling and descrambling process in the transmission, AC-coupled circuits can be used in the receiver elements (7) which results in high security in the transmission.
SE9600256A 1996-01-24 1996-01-24 Digital transmission on parallel optics link SE9600256L (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9600256A SE9600256L (en) 1996-01-24 1996-01-24 Digital transmission on parallel optics link
PCT/SE1997/000101 WO1997027694A1 (en) 1996-01-24 1997-01-22 Digital transmission on parallel optical links
AU15630/97A AU1563097A (en) 1996-01-24 1997-01-22 Digital transmission on parallel optical links
TW86100890A TW393835B (en) 1996-01-24 1997-01-25 Digital Transmission on parallel optical links

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9600256A SE9600256L (en) 1996-01-24 1996-01-24 Digital transmission on parallel optics link

Publications (2)

Publication Number Publication Date
SE9600256D0 SE9600256D0 (en) 1996-01-24
SE9600256L true SE9600256L (en) 1997-07-25

Family

ID=20401134

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9600256A SE9600256L (en) 1996-01-24 1996-01-24 Digital transmission on parallel optics link

Country Status (4)

Country Link
AU (1) AU1563097A (en)
SE (1) SE9600256L (en)
TW (1) TW393835B (en)
WO (1) WO1997027694A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060203888A1 (en) * 2005-03-10 2006-09-14 Moore George S Interface randomization methods and systems employing the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4304962A (en) * 1965-08-25 1981-12-08 Bell Telephone Laboratories, Incorporated Data scrambler
US4531022A (en) * 1983-01-13 1985-07-23 International Standard Electric Corporation Device for generating binary digit pseudo-random sequences
EP0232043A3 (en) * 1986-02-07 1989-05-10 Nortel Networks Corporation Scrambling data signals
US4817148A (en) * 1987-07-06 1989-03-28 Wegener Communications, Inc. Signal scrambling transmission system
US5355415A (en) * 1993-03-15 1994-10-11 Byeong Gi Lee Parallel distributed sample scrambling system
KR950013847B1 (en) * 1993-03-18 1995-11-16 한국전기통신공사 Descrambler of the cell based parallel atm physical layer

Also Published As

Publication number Publication date
AU1563097A (en) 1997-08-20
TW393835B (en) 2000-06-11
SE9600256D0 (en) 1996-01-24
WO1997027694A1 (en) 1997-07-31

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