FR2561427B1 - Procede d'identification de la nature d'un support magnetisable - Google Patents
Procede d'identification de la nature d'un support magnetisableInfo
- Publication number
- FR2561427B1 FR2561427B1 FR8403979A FR8403979A FR2561427B1 FR 2561427 B1 FR2561427 B1 FR 2561427B1 FR 8403979 A FR8403979 A FR 8403979A FR 8403979 A FR8403979 A FR 8403979A FR 2561427 B1 FR2561427 B1 FR 2561427B1
- Authority
- FR
- France
- Prior art keywords
- identifying
- nature
- magnetizable medium
- magnetizable
- medium
- 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
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
- G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
- G07F7/086—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means by passive credit-cards adapted therefor, e.g. constructive particularities to avoid counterfeiting, e.g. by inclusion of a physical or chemical security-layer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1207—Testing individual magnetic storage devices, e.g. records carriers or digital storage elements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K5/00—Methods or arrangements for verifying the correctness of markings on a record carrier; Column detection devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Security & Cryptography (AREA)
- Theoretical Computer Science (AREA)
- Credit Cards Or The Like (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8403979A FR2561427B1 (fr) | 1984-03-13 | 1984-03-13 | Procede d'identification de la nature d'un support magnetisable |
CA000476248A CA1261919A (fr) | 1984-03-13 | 1985-03-11 | Procede d'identification de la nature d'un support magnetisable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8403979A FR2561427B1 (fr) | 1984-03-13 | 1984-03-13 | Procede d'identification de la nature d'un support magnetisable |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2561427A1 FR2561427A1 (fr) | 1985-09-20 |
FR2561427B1 true FR2561427B1 (fr) | 1986-11-14 |
Family
ID=9302061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8403979A Expired FR2561427B1 (fr) | 1984-03-13 | 1984-03-13 | Procede d'identification de la nature d'un support magnetisable |
Country Status (2)
Country | Link |
---|---|
CA (1) | CA1261919A (fr) |
FR (1) | FR2561427B1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3887395T2 (de) * | 1987-07-02 | 1994-06-16 | Seagate Technology | Unschädliches Verfahren für die magnetische Messung von Aufzeichnungsplatten. |
GB0519971D0 (en) * | 2005-09-30 | 2005-11-09 | Rue De Int Ltd | Method and apparatus for detecting a magnetic feature on an article |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3566356A (en) * | 1968-02-29 | 1971-02-23 | Minnesota Mining & Mfg | Magnetic recording document and method |
BE789503A (fr) * | 1971-10-13 | 1973-01-15 | Burroughs Corp | |
GB1519142A (en) * | 1974-07-04 | 1978-07-26 | Emi Ltd | Detection of magnetic patterns |
GB1534859A (en) * | 1976-06-04 | 1978-12-06 | De La Rue Crosfield | Detector for documents comprising magnetizable material |
GB1551254A (en) * | 1976-08-27 | 1979-08-30 | Emi Ltd | Examination for a permanent magnetic structure |
-
1984
- 1984-03-13 FR FR8403979A patent/FR2561427B1/fr not_active Expired
-
1985
- 1985-03-11 CA CA000476248A patent/CA1261919A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA1261919A (fr) | 1989-09-26 |
FR2561427A1 (fr) | 1985-09-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |