CA2112758A1 - Data Communication System - Google Patents

Data Communication System

Info

Publication number
CA2112758A1
CA2112758A1 CA2112758A CA2112758A CA2112758A1 CA 2112758 A1 CA2112758 A1 CA 2112758A1 CA 2112758 A CA2112758 A CA 2112758A CA 2112758 A CA2112758 A CA 2112758A CA 2112758 A1 CA2112758 A1 CA 2112758A1
Authority
CA
Canada
Prior art keywords
subjected
information
frame
transmitted
line quality
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.)
Granted
Application number
CA2112758A
Other languages
French (fr)
Other versions
CA2112758C (en
Inventor
Hiroaki Sato
Katsuhiko Hayashi
Toru Tateishi
Katsumi Murano
Takayasu Aoki
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.)
Toshiba Corp
Original Assignee
Individual
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 JP00126293A external-priority patent/JP3233472B2/en
Priority claimed from JP5001263A external-priority patent/JPH06205189A/en
Application filed by Individual filed Critical Individual
Publication of CA2112758A1 publication Critical patent/CA2112758A1/en
Application granted granted Critical
Publication of CA2112758C publication Critical patent/CA2112758C/en
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
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1809—Selective-repeat protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/188—Time-out mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32609—Fault detection or counter-measures, e.g. original mis-positioned, shortage of paper
    • H04N1/32614—Fault detection or counter-measures, e.g. original mis-positioned, shortage of paper related to a single-mode communication, e.g. at the transmitter or at the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32609—Fault detection or counter-measures, e.g. original mis-positioned, shortage of paper
    • H04N1/32646—Counter-measures
    • H04N1/32683—Preventive counter-measures, e.g. using redundant hardware, or anticipating a fault
    • H04N1/32689—Involving the use of error correction codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/333—Mode signalling or mode changing; Handshaking therefor
    • H04N1/3333—Mode signalling or mode changing; Handshaking therefor during transmission, input or output of the picture signal; within a single document or page
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/333—Mode signalling or mode changing; Handshaking therefor
    • H04N1/33361—Mode signalling or mode changing; Handshaking therefor according to characteristics or the state of the communication line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/333—Mode signalling or mode changing; Handshaking therefor
    • H04N2201/33307—Mode signalling or mode changing; Handshaking therefor of a particular mode
    • H04N2201/33378—Type or format of data, e.g. colour or B/W, halftone or binary, computer image file or facsimile data

Abstract

In order to combine an ARQ system and an FEC system, an error correction code is inserted between an error detection code for a variable-length ARQ frame and a frame boundary flag pattern. Information to be transmitted is divided into blocks having a suitable length by a block divider in accordance with a line quality judged by-a line quality judger, and then subjected to a framing operation by an information frame preparer. The information subjected to the framing operation is attached with a CRC code by a CRC code generation/application circuit, subjected by a zero insertion circuit to an insertion of a suitable number of zero bits therein to provide a distinguished frame boundary with a flag, and then transmitted.
CA002112758A 1993-01-07 1994-01-04 Data communication system Expired - Fee Related CA2112758C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1,262/1993 1993-01-07
JP00126293A JP3233472B2 (en) 1993-01-07 1993-01-07 Data communication device
JP1,263/1993 1993-01-07
JP5001263A JPH06205189A (en) 1993-01-07 1993-01-07 Facsimile communication equipment

Publications (2)

Publication Number Publication Date
CA2112758A1 true CA2112758A1 (en) 1994-07-08
CA2112758C CA2112758C (en) 1999-07-06

Family

ID=26334456

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002112758A Expired - Fee Related CA2112758C (en) 1993-01-07 1994-01-04 Data communication system

Country Status (4)

Country Link
US (1) US5638384A (en)
EP (1) EP0606016B1 (en)
CA (1) CA2112758C (en)
DE (1) DE69332367T2 (en)

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JP3201265B2 (en) * 1996-06-12 2001-08-20 富士ゼロックス株式会社 Data transmission apparatus and method
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DE19651593B4 (en) * 1996-12-11 2008-11-20 Rohde & Schwarz Gmbh & Co. Kg Arrangement for optimizing the data transmission via a bidirectional radio channel
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US6269464B1 (en) * 1997-06-18 2001-07-31 Sutmyn Storage Corporation Error checking technique for use in mass storage systems
DE69834492T2 (en) * 1997-07-15 2007-05-10 Viasat Inc., Carlsbad METHOD AND DEVICE FOR SEGMENTING, REBUILDING AND INVERSE MULTIPLEXING OF PACKAGES AND ATM CELLS VIA SATELLITE / WIRELESS NETWORKS
US6477669B1 (en) 1997-07-15 2002-11-05 Comsat Corporation Method and apparatus for adaptive control of forward error correction codes
US6182166B1 (en) * 1997-08-25 2001-01-30 Emc Corporation Method/apparatus for interfacing two remotely disposed devices coupled via transmission medium with first and second commands transmitted without first checking receiving device for readiness
US6208663B1 (en) 1997-08-29 2001-03-27 Telefonaktiebolaget Lm Ericsson (Publ) Method and system for block ARQ with reselection of FEC coding and/or modulation
JP3449204B2 (en) * 1998-01-23 2003-09-22 ソニー株式会社 Control device, wireless transmission device, and wireless transmission method
JP3132484B2 (en) * 1998-09-09 2001-02-05 日本電気株式会社 Method and apparatus for controlling data transmission according to quality of communication line
US6418549B1 (en) 1998-10-30 2002-07-09 Merunetworks, Inc. Data transmission using arithmetic coding based continuous error detection
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US7593380B1 (en) * 1999-03-05 2009-09-22 Ipr Licensing, Inc. Variable rate forward error correction for enabling high performance communication
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GB2348583A (en) * 1999-03-31 2000-10-04 Adaptive Broadband Ltd Automatic re-transmission of data
US6421803B1 (en) * 1999-06-25 2002-07-16 Telefonaktiebolaget L M Ericsson (Publ) System and method for implementing hybrid automatic repeat request using parity check combining
US6625165B1 (en) * 1999-07-27 2003-09-23 Lucent Technologies Inc. Data link protocol for wireless systems
KR100607934B1 (en) * 1999-08-27 2006-08-03 삼성전자주식회사 Link layer error control method in wideband wireless communication, and computer readable medium therefor
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US7069491B2 (en) * 2000-11-27 2006-06-27 Macrovision Europe Limited Copy protected DVD and method for producing and validating same
US7085019B2 (en) * 2001-03-27 2006-08-01 Canon Kabushiki Kaisha Facsimile apparatus
US20030169740A1 (en) * 2002-03-08 2003-09-11 Harris John M. Method and apparatus for transmitting and receiving data
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US7451381B2 (en) * 2004-02-03 2008-11-11 Phonex Broadband Corporation Reliable method and system for efficiently transporting dynamic data across a network
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Also Published As

Publication number Publication date
US5638384A (en) 1997-06-10
EP0606016B1 (en) 2002-10-09
DE69332367D1 (en) 2002-11-14
CA2112758C (en) 1999-07-06
DE69332367T2 (en) 2003-07-03
EP0606016A1 (en) 1994-07-13

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