DE69030053T2 - Modem fähig zur detektierung von synchronzuständen ausserhalb eines rahmens - Google Patents

Modem fähig zur detektierung von synchronzuständen ausserhalb eines rahmens

Info

Publication number
DE69030053T2
DE69030053T2 DE69030053T DE69030053T DE69030053T2 DE 69030053 T2 DE69030053 T2 DE 69030053T2 DE 69030053 T DE69030053 T DE 69030053T DE 69030053 T DE69030053 T DE 69030053T DE 69030053 T2 DE69030053 T2 DE 69030053T2
Authority
DE
Germany
Prior art keywords
frame
modem capable
detecting synchronous
synchronous outside
outside
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.)
Expired - Fee Related
Application number
DE69030053T
Other languages
English (en)
Other versions
DE69030053D1 (de
Inventor
Yasunao Mizutani
Takashi Kaku
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
Priority claimed from JP1151272A external-priority patent/JPH088562B2/ja
Priority claimed from JP1164624A external-priority patent/JP2610999B2/ja
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE69030053D1 publication Critical patent/DE69030053D1/de
Publication of DE69030053T2 publication Critical patent/DE69030053T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/048—Speed or phase control by synchronisation signals using the properties of error detecting or error correcting codes, e.g. parity as synchronisation signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
DE69030053T 1989-06-13 1990-06-13 Modem fähig zur detektierung von synchronzuständen ausserhalb eines rahmens Expired - Fee Related DE69030053T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1151272A JPH088562B2 (ja) 1989-06-13 1989-06-13 フレーム同期外れ検出方式
JP1164624A JP2610999B2 (ja) 1989-06-27 1989-06-27 データ伝送装置の誤り制御方式
PCT/JP1990/000769 WO1990016123A1 (fr) 1989-06-13 1990-06-13 Modem capable de detecter des conditions de synchronisme hors bloc

Publications (2)

Publication Number Publication Date
DE69030053D1 DE69030053D1 (de) 1997-04-10
DE69030053T2 true DE69030053T2 (de) 1997-06-12

Family

ID=26480573

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69030053T Expired - Fee Related DE69030053T2 (de) 1989-06-13 1990-06-13 Modem fähig zur detektierung von synchronzuständen ausserhalb eines rahmens
DE69033637T Expired - Fee Related DE69033637T2 (de) 1989-06-13 1990-06-13 Modulator-Demodulator mit der Fähigkeit, nicht-synchronisierte Rahmenzustände zu Erkennen

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69033637T Expired - Fee Related DE69033637T2 (de) 1989-06-13 1990-06-13 Modulator-Demodulator mit der Fähigkeit, nicht-synchronisierte Rahmenzustände zu Erkennen

Country Status (6)

Country Link
US (3) US5319650A (de)
EP (2) EP0721265B1 (de)
CA (1) CA2034007C (de)
DE (2) DE69030053T2 (de)
ES (1) ES2098268T3 (de)
WO (1) WO1990016123A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2817785B2 (ja) * 1996-06-20 1998-10-30 日本電気株式会社 自動識別点制御識別器およびその制御方法
US6031873A (en) * 1996-06-24 2000-02-29 3Com Corporation Nested shell mapping
US6101216A (en) * 1997-10-03 2000-08-08 Rockwell International Corporation Splitterless digital subscriber line communication system
US6735724B1 (en) * 1999-04-08 2004-05-11 Texas Instruments Incorporated Detection error estimation and method
JP3545726B2 (ja) * 2001-02-27 2004-07-21 松下電器産業株式会社 受信側装置
WO2019003301A1 (ja) * 2017-06-27 2019-01-03 三菱電機株式会社 尤度生成装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146841A (en) * 1977-09-28 1979-03-27 Harris Corporation Technique for combatting jitter in multiple phase transmission system
CH656760A5 (de) * 1981-11-11 1986-07-15 Landis & Gyr Ag Verfahren und anordnung zur sicherstellung der start-synchronisation eines aus bit-impulsfolgen bestehenden telegramms innerhalb eines empfaengers.
US4546322A (en) * 1983-08-24 1985-10-08 Reliance Electric Company Adaptable demodulator for arbitrary amplitude and phase keyed modulation signals
US4756007A (en) * 1984-03-08 1988-07-05 Codex Corporation Adaptive communication rate modem
JPS60213150A (ja) * 1984-04-06 1985-10-25 Nec Corp 符号方式
JPS60214150A (ja) * 1984-04-09 1985-10-26 Fujitsu Ltd デ−タアクセスユニツトの試験方法
JPS61118049A (ja) * 1984-11-14 1986-06-05 Fujitsu Ltd デ−タ伝送方式
JPS61137447A (ja) * 1984-12-07 1986-06-25 Mitsubishi Electric Corp 多相ｐｓｋ信号の復号装置
US4837766A (en) * 1986-03-24 1989-06-06 Nec Corporation Frame step-out detecting system
JPS6333028A (ja) * 1986-07-26 1988-02-12 Nec Corp 信号検出方式
US5001729A (en) * 1987-05-26 1991-03-19 Hayes Microcomputer Products, Inc. High speed half duplex modem with fast turnaround protocol
US4891806A (en) * 1987-09-18 1990-01-02 Racal Data Communications Inc. Constellation multiplexed inband secondary channel for voiceband modem
US4873766A (en) * 1988-04-25 1989-10-17 Johnston Robert H Power saw
JPH06310837A (ja) * 1993-04-23 1994-11-04 Nec Toyama Ltd 印刷配線板及びその製造方法

Also Published As

Publication number Publication date
EP0721265B1 (de) 2000-09-27
CA2034007A1 (en) 1990-12-14
DE69033637D1 (de) 2000-11-02
US5574737A (en) 1996-11-12
DE69033637T2 (de) 2001-02-08
EP0429674A1 (de) 1991-06-05
EP0721265A3 (de) 1996-11-27
US5572537A (en) 1996-11-05
US5319650A (en) 1994-06-07
EP0429674B1 (de) 1997-03-05
ES2098268T3 (es) 1997-05-01
EP0721265A2 (de) 1996-07-10
DE69030053D1 (de) 1997-04-10
WO1990016123A1 (fr) 1990-12-27
EP0429674A4 (en) 1993-05-12
CA2034007C (en) 1997-09-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee