DE69117857D1 - Gerät und Verfahren zur Parallelgeneration von zyklischen redundanten Prüfungskoden - Google Patents

Gerät und Verfahren zur Parallelgeneration von zyklischen redundanten Prüfungskoden

Info

Publication number
DE69117857D1
DE69117857D1 DE69117857T DE69117857T DE69117857D1 DE 69117857 D1 DE69117857 D1 DE 69117857D1 DE 69117857 T DE69117857 T DE 69117857T DE 69117857 T DE69117857 T DE 69117857T DE 69117857 D1 DE69117857 D1 DE 69117857D1
Authority
DE
Germany
Prior art keywords
test codes
parallel generation
redundant test
cyclic redundant
cyclic
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
DE69117857T
Other languages
English (en)
Other versions
DE69117857T2 (de
Inventor
Subrahmanyam Dravida
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.)
AT&T Corp
Original Assignee
AT&T Corp
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 AT&T Corp filed Critical AT&T Corp
Publication of DE69117857D1 publication Critical patent/DE69117857D1/de
Application granted granted Critical
Publication of DE69117857T2 publication Critical patent/DE69117857T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/09—Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
    • H03M13/091—Parallel or block-wise CRC computation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/65—Purpose and implementation aspects
    • H03M13/6575—Implementations based on combinatorial logic, e.g. Boolean circuits
DE69117857T 1990-10-11 1991-10-02 Gerät und Verfahren zur Parallelgeneration von zyklischen redundanten Prüfungskoden Expired - Fee Related DE69117857T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59589990A 1990-10-11 1990-10-11

Publications (2)

Publication Number Publication Date
DE69117857D1 true DE69117857D1 (de) 1996-04-18
DE69117857T2 DE69117857T2 (de) 1996-08-14

Family

ID=24385167

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69117857T Expired - Fee Related DE69117857T2 (de) 1990-10-11 1991-10-02 Gerät und Verfahren zur Parallelgeneration von zyklischen redundanten Prüfungskoden

Country Status (5)

Country Link
US (1) US5282214A (de)
EP (1) EP0480621B1 (de)
JP (1) JPH087700B2 (de)
CA (1) CA2050123C (de)
DE (1) DE69117857T2 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2821324B2 (ja) * 1992-11-04 1998-11-05 三菱電機株式会社 誤り訂正回路
US5390196A (en) * 1992-11-12 1995-02-14 Bull Hn Information Systems Inc. Byte-wise determination of a checksum from a CRC-32 polynomial
JP3000811B2 (ja) * 1993-01-25 2000-01-17 日本電気株式会社 巡回符号化およびｃｒｃ装置とその処理方法
GB9312135D0 (en) * 1993-06-11 1993-07-28 Inmos Ltd Generation of checking data
GB9312136D0 (en) * 1993-06-11 1993-07-28 Inmos Ltd Transmission of messages
KR950009690B1 (ko) * 1993-09-14 1995-08-26 재단법인한국전자통신연구소 순환 여유검사(crc) 동기 장치
US5878057A (en) * 1995-10-06 1999-03-02 Tektronix, Inc. Highly parallel cyclic redundancy code generator
US5796733A (en) * 1996-07-03 1998-08-18 General Signal Corporation Time division switching system
US5805614A (en) * 1996-07-03 1998-09-08 General Signal Corporation Fault tolerant switch fabric with control and data correction by hamming codes
US5812556A (en) * 1996-07-03 1998-09-22 General Signal Corporation Fault tolerant switch fabric with control and data correction by hamming codes and error inducing check register
GB2321374A (en) * 1997-01-21 1998-07-22 Ico Services Ltd Spread spectrum satellite communication
US6006354A (en) * 1997-02-12 1999-12-21 Stmicroelectronics, Inc. Security device for a video digital to analog converter
EP0876021B1 (de) * 1997-04-30 2004-10-06 Hewlett-Packard Company, A Delaware Corporation Anordnung und Verfahren zur Übertragung von Daten über eine Vielzahl von Kanälen
DE19838865C2 (de) * 1998-08-26 2001-03-01 Ericsson Telefon Ab L M Parallele CRC Erzeugungsschaltung zum Erzeugen eines CRC Codes und Verfahren zum Generieren einer derartigen Schaltung
US6519738B1 (en) * 2000-03-07 2003-02-11 International Business Machines Corporation Method and apparatus for high-speed CRC computation based on state-variable transformation
US6609225B1 (en) * 2000-12-21 2003-08-19 Cisco Technology, Inc. Method and apparatus for generating and checking cyclic redundancy code (CRC) values using a multi-byte CRC generator on a variable number of bytes
US6766493B1 (en) 2000-12-21 2004-07-20 Cisco Technology, Inc. Method and apparatus for generating and checking cyclic redundancy code (CRC) values using a CRC generator and binary galois field multiplier
GB2383725A (en) * 2001-12-27 2003-07-02 Ubinetics Ltd Data decoding with Cyclic Redundancy Check
US7458006B2 (en) * 2002-02-22 2008-11-25 Avago Technologies General Ip (Singapore) Pte. Ltd. Methods for computing the CRC of a message from the incremental CRCs of composite sub-messages
US7225387B2 (en) * 2004-02-03 2007-05-29 International Business Machines Corporation Multilevel parallel CRC generation and checking circuit
US8438265B2 (en) * 2004-11-04 2013-05-07 International Business Machines Corporation Method of offloading iSCSI PDU corruption-detection digest generation from a host processing unit, and related iSCSI offload engine
JP4935787B2 (ja) * 2008-09-12 2012-05-23 日本電気株式会社 巡回符号演算処理回路

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805232A (en) * 1972-01-24 1974-04-16 Honeywell Inf Systems Encoder/decoder for code words of variable length
US3775746A (en) * 1972-05-19 1973-11-27 Ibm Method and apparatus for detecting odd numbers of errors and burst errors of less than a predetermined length in scrambled digital sequences
US4312068A (en) * 1976-08-12 1982-01-19 Honeywell Information Systems Inc. Parallel generation of serial cyclic redundancy check
JPS58147807A (ja) * 1982-02-26 1983-09-02 Toshiba Corp 誤り訂正回路
US4454600A (en) * 1982-08-25 1984-06-12 Ael Microtel Limited Parallel cyclic redundancy checking circuit
US4498174A (en) * 1982-08-25 1985-02-05 Ael Microtel Limited Parallel cyclic redundancy checking circuit
US4677623A (en) * 1983-11-11 1987-06-30 Hitachi, Ltd. Decoding method and apparatus for cyclic codes
US4593393A (en) * 1984-02-06 1986-06-03 Motorola, Inc. Quasi parallel cyclic redundancy checker
US4809273A (en) * 1987-01-29 1989-02-28 International Business Machines Corporation Device for verifying operation of a checking code generator
US4890286A (en) * 1987-12-11 1989-12-26 Sanyo Electric Co., Ltd. Method and apparatus for decoding error correcting code
US5121396A (en) * 1988-10-27 1992-06-09 International Business Machines Corp. Preservation of crc integrity upon intentional data alteration during message transmission
US5111463A (en) * 1989-11-09 1992-05-05 Exabyte Corporation Error correction method and apparatus
US5103451A (en) * 1990-01-29 1992-04-07 Motorola, Inc. Parallel cyclic redundancy check circuit

Also Published As

Publication number Publication date
CA2050123C (en) 1997-12-09
EP0480621A2 (de) 1992-04-15
JPH05127934A (ja) 1993-05-25
EP0480621B1 (de) 1996-03-13
EP0480621A3 (de) 1992-05-13
DE69117857T2 (de) 1996-08-14
CA2050123A1 (en) 1992-04-12
JPH087700B2 (ja) 1996-01-29
US5282214A (en) 1994-01-25

Similar Documents

Publication Publication Date Title
DE69117857T2 (de) Gerät und Verfahren zur Parallelgeneration von zyklischen redundanten Prüfungskoden
DE3486027T2 (de) Testvorrichtung und verfahren.
DE68927037D1 (de) Verfahren und Vorrichtung zur Erzeugung von Plasma
DE69421963D1 (de) Nachbearbeitungsverfahren und Vorrichtung zur Erzeugung von Zuverlässigkeitsymbolen
DE69033130T2 (de) Verfahren und Gerät zur Prüfung von Substraten
DE68916588T2 (de) Verfahren und Gerät zur Feststellung von Gasen.
DE69028130D1 (de) Verfahren und Gerät zur Reinigung von Halbleiterbauelementen
DE69021659D1 (de) Verfahren und Vorrichtung zur reihenweisen Parallelprogrammfehlersuche.
DE3787818T2 (de) Anordnung und Verfahren zur Paketerzeugung.
DE58906917D1 (de) Vorrichtung und Verfahren zur Leckprüfung.
DE69034140D1 (de) Verfahren und Einrichtung zur Erzeugung von Mustern
DE69109213T2 (de) Verfahren und Vorrichtung zur Erzeugung von Röntgenstrahlen.
DE3869325D1 (de) Verfahren und vorrichtung zur pruefung von lichtwellenleiter-knotenpunkten.
DE3778954D1 (de) Verfahren und geraet zur wellenformkombination.
DE69432507D1 (de) Verfahren und Geräte zur Erzeugung von Zeichnungsdaten
DE3764295D1 (de) Verfahren und vorrichtung zur pruefung von faeden.
DE69208108D1 (de) Verfahren und Vorrichtung zur Prüfung von Gasleckage
DE69333806D1 (de) Verfahren und Gerät zur Prüfsequenzgenerierung
DE69223820T2 (de) Gerät und Verfahren zur Programmfehlerbeseitigung
DE69125613T2 (de) Verfahren und Vorrichtung zur Erzeugung von Testsignalen
DE3881795D1 (de) Testvorrichtung und verfahren.
DE69220345D1 (de) Verfahren und Vorrichtung zur Erzeugung von Fernsehprüfmustern
DE68926721T2 (de) Verfahren und Gerät zur Charakterisierung von optischen Systemen
DE69029974D1 (de) Gerät und Verfahren zur Erzeugung von Signalen
DE68912900D1 (de) Verfahren und Gerät zur Inspektion von Schichten.

Legal Events

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