GB905554A - A data-processing machine including means for checking input data - Google Patents
A data-processing machine including means for checking input dataInfo
- Publication number
- GB905554A GB905554A GB1405459A GB1405459A GB905554A GB 905554 A GB905554 A GB 905554A GB 1405459 A GB1405459 A GB 1405459A GB 1405459 A GB1405459 A GB 1405459A GB 905554 A GB905554 A GB 905554A
- Authority
- GB
- United Kingdom
- Prior art keywords
- check digits
- data
- store
- processing machine
- including means
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
- G06F11/1012—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using codes or arrangements adapted for a specific type of error
- G06F11/104—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using codes or arrangements adapted for a specific type of error using arithmetic codes, i.e. codes which are preserved during operation, e.g. modulo 9 or 11 check
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
905,554. Calculating check digits. TELEFUNKEN G.m.b.H. April 24, 1959 [May 31, 1958], No. 14054/59. Class 106 (1). Two or more check digits for an n-digit decimal number, Ao = a n-1 . . . a 0 , are calculated by forming the numbers where v = 1,2, . . . k, k being the number of check digits, and the gi(v) are weights, e.g. powers of a suitable prime N (gi = Ni). The Qv are then expressed as residues of coprime numbers m v and the residues taken as the check digits. It is convenient to express the weights as their smallest representation mod. m v . In the machine shown a number is entered by a keyboard 1 into a store 2 together with precalculated check digits r 1 , r2. The store number is passed to a circuit 3 which calculates the check digits r 1 <SP>1</SP>, r 2 <SP>1</SP> independently. Circuits 4 and 5 form r 1 -r 1 <SP>1</SP>, and r 2 -r<SP>1</SP> 2 = and pass the results to circuit 6. If the results are zero, switch 7 is closed and the store contents transferred. If not, a signal is given indicating an error.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET0015219 | 1958-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB905554A true GB905554A (en) | 1962-09-12 |
Family
ID=7547852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1405459A Expired GB905554A (en) | 1958-05-31 | 1959-04-24 | A data-processing machine including means for checking input data |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH366988A (en) |
| FR (1) | FR1226757A (en) |
| GB (1) | GB905554A (en) |
| NL (1) | NL239505A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1360665A1 (en) * | 2001-02-12 | 2003-11-12 | France Telecom | Telepayment method and system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1280315B (en) * | 1966-02-10 | 1968-10-17 | Philips Patentverwaltung | Circuit arrangement for calculating test characters and for obtaining direct correction information |
-
0
- NL NL239505D patent/NL239505A/xx unknown
-
1959
- 1959-03-20 CH CH7102559A patent/CH366988A/en unknown
- 1959-04-07 FR FR791448A patent/FR1226757A/en not_active Expired
- 1959-04-24 GB GB1405459A patent/GB905554A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1360665A1 (en) * | 2001-02-12 | 2003-11-12 | France Telecom | Telepayment method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1226757A (en) | 1960-08-16 |
| CH366988A (en) | 1963-01-31 |
| NL239505A (en) |
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