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GB2155281A - Probabilistic scrambler and method of probabilistic scrambling - Google Patents
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GB2155281A - Probabilistic scrambler and method of probabilistic scrambling - Google Patents

Probabilistic scrambler and method of probabilistic scrambling

Info

Publication number
GB2155281A
GB2155281A GB08431645A GB8431645A GB2155281A GB 2155281 A GB2155281 A GB 2155281A GB 08431645 A GB08431645 A GB 08431645A GB 8431645 A GB8431645 A GB 8431645A GB 2155281 A GB2155281 A GB 2155281A
Authority
GB
United Kingdom
Prior art keywords
seed
probabilistic
scrambling
generate
bit sequence
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.)
Withdrawn
Application number
GB08431645A
Other versions
GB8431645D0 (en
Inventor
John Corrigan
David A Roos
Shu-Gwei Tyan
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.)
MA Com DCC Inc
Original Assignee
MA Com DCC Inc
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 MA Com DCC Inc filed Critical MA Com DCC Inc
Publication of GB8431645D0 publication Critical patent/GB8431645D0/en
Publication of GB2155281A publication Critical patent/GB2155281A/en
Withdrawn legal-status Critical Current

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)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

Probabilistic scrambling, and the complementary probabilistic descrambling, for purposes of assuring reasonably frequent transitions in a transmitted signal for the purposes of receiver clocking. The transmitter (30) is provided with apparatus (16) for generating one or more different seeds. For transmitting any particular message, a seed is selected. The seed is generated randomly in order to increase the probability of successful transmission. The seed is used to generate a scrambling bit sequence which is combined with the data for transmission to generate a transmitted signal. The transmitted signal include at least some information identifying the scrambling bit sequence or the particular seed used for generating the scrambling bit sequence. Preferably, the seed itself (in scrambled or unscrambled form) precedes the scrambled data. At the receiver, (40) this seed is used to generate a complementary descrambling bit sequence which is combined with the received data to generate the original data scrambled at the transmitter (30).
GB08431645A 1983-06-29 1984-06-29 Probabilistic scrambler and method of probabilistic scrambling Withdrawn GB2155281A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50911183A 1983-06-29 1983-06-29
PCT/US1984/001022 WO1985000259A1 (en) 1983-06-29 1984-06-29 Probabilistic scrambler and method of probabilistic scrambling

Publications (2)

Publication Number Publication Date
GB8431645D0 GB8431645D0 (en) 1985-01-30
GB2155281A true GB2155281A (en) 1985-09-18

Family

ID=24025306

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08431645A Withdrawn GB2155281A (en) 1983-06-29 1984-06-29 Probabilistic scrambler and method of probabilistic scrambling

Country Status (4)

Country Link
EP (1) EP0148263A4 (en)
JP (1) JPS60501684A (en)
GB (1) GB2155281A (en)
WO (1) WO1985000259A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003343A1 (en) * 1986-10-22 1988-05-05 Bell Communications Research, Inc. Multiplex digital communications system
GB2288519A (en) * 1994-04-05 1995-10-18 Ibm Data encryption
GB9903900D0 (en) 1999-02-19 1999-04-14 Digital Gramaphone And Wireles Data encoding/decoding device and apparatus using the same
JP2001016196A (en) * 1999-04-28 2001-01-19 Fuji Soft Abc Inc Encryption / decryption method using multiple affine keys, authentication method, and devices using the same
DE602004014109D1 (en) 2003-03-03 2008-07-10 Matsushita Electric Industrial Co Ltd METHOD AND DEVICES FOR REDUCING DISCRETE POWER DENSITY COMPONENTS OF SIGNALS TRANSMITTED IN BROADBAND COMMUNICATION SYSTEMS
US7721060B2 (en) * 2003-11-13 2010-05-18 Intel Corporation Method and apparatus for maintaining data density for derived clocking
US9473333B2 (en) * 2008-02-11 2016-10-18 International Business Machines Corporation Communications system via data scrambling and associated methods
US20090303972A1 (en) * 2008-06-06 2009-12-10 Silver Spring Networks Dynamic Scrambling Techniques for Reducing Killer Packets in a Wireless Network

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522374A (en) * 1966-06-17 1970-07-28 Int Standard Electric Corp Ciphering unit
US3808536A (en) * 1972-04-12 1974-04-30 Gen Electric Co Ltd Communication scrambler system
US4052565A (en) * 1975-05-28 1977-10-04 Martin Marietta Corporation Walsh function signal scrambler
US4176247A (en) * 1973-10-10 1979-11-27 Sperry Rand Corporation Signal scrambler-unscrambler for binary coded transmission system
US4214209A (en) * 1977-09-22 1980-07-22 Siemens Aktiengesellschaft Circuit for synchronizing a pseudo-random generator mounted at a receiver for communication transmission systems utilizing pseudo-noise phase shift keying
US4221931A (en) * 1977-10-17 1980-09-09 Harris Corporation Time division multiplied speech scrambler
US4264781A (en) * 1979-04-16 1981-04-28 Ncr Corporation Apparatus for encoding and decoding data signals
US4355388A (en) * 1979-09-27 1982-10-19 Communications Satellite Corporation Microprogrammable TDMA terminal controller

Family Cites Families (2)

* 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
DE3010969A1 (en) * 1980-03-21 1981-10-01 Siemens AG, 1000 Berlin und 8000 München PCM SYSTEM WITH TRANSMITTER ENCODER AND RECEIVED DESIGNER

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522374A (en) * 1966-06-17 1970-07-28 Int Standard Electric Corp Ciphering unit
US3808536A (en) * 1972-04-12 1974-04-30 Gen Electric Co Ltd Communication scrambler system
US4176247A (en) * 1973-10-10 1979-11-27 Sperry Rand Corporation Signal scrambler-unscrambler for binary coded transmission system
US4052565A (en) * 1975-05-28 1977-10-04 Martin Marietta Corporation Walsh function signal scrambler
US4214209A (en) * 1977-09-22 1980-07-22 Siemens Aktiengesellschaft Circuit for synchronizing a pseudo-random generator mounted at a receiver for communication transmission systems utilizing pseudo-noise phase shift keying
US4221931A (en) * 1977-10-17 1980-09-09 Harris Corporation Time division multiplied speech scrambler
US4264781A (en) * 1979-04-16 1981-04-28 Ncr Corporation Apparatus for encoding and decoding data signals
US4355388A (en) * 1979-09-27 1982-10-19 Communications Satellite Corporation Microprogrammable TDMA terminal controller

Also Published As

Publication number Publication date
EP0148263A4 (en) 1986-09-15
EP0148263A1 (en) 1985-07-17
WO1985000259A1 (en) 1985-01-17
GB8431645D0 (en) 1985-01-30
JPS60501684A (en) 1985-10-03

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)