FR2361699A1 - CYCLIC REDUNDANCY CONTROL METHOD AND DEVICE FOR COMPUTERS - Google Patents
CYCLIC REDUNDANCY CONTROL METHOD AND DEVICE FOR COMPUTERSInfo
- Publication number
- FR2361699A1 FR2361699A1 FR7724812A FR7724812A FR2361699A1 FR 2361699 A1 FR2361699 A1 FR 2361699A1 FR 7724812 A FR7724812 A FR 7724812A FR 7724812 A FR7724812 A FR 7724812A FR 2361699 A1 FR2361699 A1 FR 2361699A1
- Authority
- FR
- France
- Prior art keywords
- data
- character
- cyclic redundancy
- computers
- control method
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Detection And Correction Of Errors (AREA)
- Error Detection And Correction (AREA)
- Executing Machine-Instructions (AREA)
Abstract
L'invention concerne un dispositif pour générer un caractère de contrôle par redondance dans un ordinateur universel et un procédé pour générer ce caractère. Le procédé selon l'invention utilise l'équipement fixe 401, 402 d'un ordinateur pour générer un caractère de contrôle par redondance cyclique chaque fois qu'une unité de donnée est transmise, ce caractère étant enchaîné à droite de la donnée transmise et, chaque fois que la donnée particulière est requise, le caractère de contrôle et la donnée à laquelle il est associé sont manipulés de la même façon que pour générer le caractère de contrôle. Si la donnée reçue est la même que la donnée transmise le résultat de cette manipulation est zéro.The invention relates to a device for generating a redundancy check character in a universal computer and to a method for generating this character. The method according to the invention uses the fixed equipment 401, 402 of a computer to generate a cyclic redundancy check character each time a data unit is transmitted, this character being chained to the right of the transmitted data and, each time the particular data is required, the check character and the data with which it is associated are handled in the same way as to generate the check character. If the data received is the same as the data transmitted, the result of this manipulation is zero.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US71407476A | 1976-08-12 | 1976-08-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2361699A1 true FR2361699A1 (en) | 1978-03-10 |
FR2361699B1 FR2361699B1 (en) | 1984-12-28 |
Family
ID=24868662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7724812A Granted FR2361699A1 (en) | 1976-08-12 | 1977-08-11 | CYCLIC REDUNDANCY CONTROL METHOD AND DEVICE FOR COMPUTERS |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS6027420B2 (en) |
AU (1) | AU2770077A (en) |
CA (1) | CA1099022A (en) |
DE (1) | DE2735806A1 (en) |
FR (1) | FR2361699A1 (en) |
GB (1) | GB1541539A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2429466A1 (en) * | 1978-06-21 | 1980-01-18 | Data General Corp | ERROR CORRECTION CIRCUIT FOR DATA PROCESSING SYSTEMS |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1366833A (en) * | 1973-01-26 | 1974-09-11 | Post Office | Telemunications systems |
-
1977
- 1977-08-05 CA CA284,163A patent/CA1099022A/en not_active Expired
- 1977-08-08 AU AU27700/77A patent/AU2770077A/en active Pending
- 1977-08-09 DE DE19772735806 patent/DE2735806A1/en not_active Withdrawn
- 1977-08-11 JP JP52095647A patent/JPS6027420B2/en not_active Expired
- 1977-08-11 FR FR7724812A patent/FR2361699A1/en active Granted
- 1977-08-11 GB GB3370777A patent/GB1541539A/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1366833A (en) * | 1973-01-26 | 1974-09-11 | Post Office | Telemunications systems |
Non-Patent Citations (3)
Title |
---|
EXBK/72 * |
EXBK/76 * |
EXBK/78 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2429466A1 (en) * | 1978-06-21 | 1980-01-18 | Data General Corp | ERROR CORRECTION CIRCUIT FOR DATA PROCESSING SYSTEMS |
Also Published As
Publication number | Publication date |
---|---|
GB1541539A (en) | 1979-03-07 |
DE2735806A1 (en) | 1978-02-16 |
JPS6027420B2 (en) | 1985-06-28 |
CA1099022A (en) | 1981-04-07 |
JPS5322341A (en) | 1978-03-01 |
FR2361699B1 (en) | 1984-12-28 |
AU2770077A (en) | 1979-02-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DK0671037T3 (en) | Method and system for generating, specifying and developing parametric fonts | |
FR2436438A1 (en) | SEQUENCE DISPLAY CONTROL METHOD AND DEVICE | |
Peterson et al. | May 1970: The Campus Aftermath of Cambodia and Kent State. | |
DE68908454D1 (en) | CARD TRANSACTION PROCESSING DEVICE. | |
EP0326158A3 (en) | Method and apparatus for magnifying display data generated in computer system | |
FR2361699A1 (en) | CYCLIC REDUNDANCY CONTROL METHOD AND DEVICE FOR COMPUTERS | |
Cameron et al. | DIALOG: a conversational programming system with a graphical orientation | |
ES2117704T3 (en) | DEVICE TO SIMPLIFY THE USE OF A COMPUTER SYSTEM. | |
FR2423828A1 (en) | MANUAL OPTICAL READING DEVICE FOR CHARACTER IDENTIFICATION | |
SU564630A1 (en) | Data introducing device | |
Rowlett Jr | The new computer profession | |
DE59506349D1 (en) | Input system for computers | |
AVDIUSHIN et al. | Problems in the representation and processing of heliogeophysical data(Russian book) | |
SU930317A1 (en) | Device for adding numbers in residual class system | |
JPS56147251A (en) | Control system with computer | |
BROWNSTEIN | A CDC 6600-based cross-assembler for the DEC PDP 8 minicomputer[Final Technical Report] | |
KOCHKAREV | Application of orthogonal signals in hybrid computers | |
El‐Shaarawi et al. | Consistency, stability and convergence of the finite‐difference equations for flow about a rotating sphere in an axial stream | |
Van Staden | A comprehensive introduction to vector algebra | |
Kaufman | Remark on “Algorithm 496: The LZ Algorithm to Solve the Generalized Eigenvalue Problem for Complex Matrices [F2]” | |
Anderson et al. | Automated Q-Gert source code generation using computer aided design. | |
FR2373101A1 (en) | PROCESS AND DEVICE ALLOWING A PROCESSOR OF A COMPUTER TO COMMUNICATE WITH ANOTHER | |
KR890010572A (en) | Hard disk driver measuring device using personal computer | |
Hickey | TO DEFINE TRUE MADNESS | |
Cheadle III | Computer program for Universal Transverse Mercator map projection.[MYPROJ subroutine] |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |