FR2688907B1 - Procede d'enregistrement et de lecture d'une bande magnetique bicouche et systeme de mise en óoeuvre. - Google Patents
Procede d'enregistrement et de lecture d'une bande magnetique bicouche et systeme de mise en óoeuvre.Info
- Publication number
- FR2688907B1 FR2688907B1 FR9203388A FR9203388A FR2688907B1 FR 2688907 B1 FR2688907 B1 FR 2688907B1 FR 9203388 A FR9203388 A FR 9203388A FR 9203388 A FR9203388 A FR 9203388A FR 2688907 B1 FR2688907 B1 FR 2688907B1
- Authority
- FR
- France
- Prior art keywords
- playing
- implementing
- recording
- same
- magnetic tape
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06187—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with magnetically detectable marking
- G06K19/06196—Constructional details
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
- G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
- G06K1/125—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by magnetic means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
- G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
- G06K19/12—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by magnetic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Digital Magnetic Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9203388A FR2688907B1 (fr) | 1992-03-20 | 1992-03-20 | Procede d'enregistrement et de lecture d'une bande magnetique bicouche et systeme de mise en óoeuvre. |
EP93400639A EP0561678A1 (fr) | 1992-03-20 | 1993-03-12 | Procédé d'enregistrement et de lecture d'une bande magnétique bicouche et système de mise en oeuvre |
US08/695,513 US5867639A (en) | 1992-03-20 | 1996-08-12 | Method for the recording and reading of a two-layer magnetic tape, and system of implementation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9203388A FR2688907B1 (fr) | 1992-03-20 | 1992-03-20 | Procede d'enregistrement et de lecture d'une bande magnetique bicouche et systeme de mise en óoeuvre. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2688907A1 FR2688907A1 (fr) | 1993-09-24 |
FR2688907B1 true FR2688907B1 (fr) | 1994-05-27 |
Family
ID=9427906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9203388A Expired - Fee Related FR2688907B1 (fr) | 1992-03-20 | 1992-03-20 | Procede d'enregistrement et de lecture d'une bande magnetique bicouche et systeme de mise en óoeuvre. |
Country Status (3)
Country | Link |
---|---|
US (1) | US5867639A (fr) |
EP (1) | EP0561678A1 (fr) |
FR (1) | FR2688907B1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2324644B (en) * | 1997-04-22 | 2001-09-12 | Central Research Lab Ltd | Apparatus for reading permanently structured magnetic records |
US6189791B1 (en) * | 1997-09-19 | 2001-02-20 | Sankyo Seiki Mfg Co., Ltd. | Magnetic card reader and method for determining the coercive force of a magnetic card therein |
CA2442724C (fr) * | 2001-03-29 | 2009-04-07 | Kci Licensing, Inc. | Lit therapeutique pour positionnement sur le ventre |
US6671905B2 (en) * | 2001-03-29 | 2004-01-06 | Kci Licensing, Inc. | Prone positioning therapeutic bed |
US8310780B2 (en) * | 2010-07-20 | 2012-11-13 | International Business Machines Corporation | Method and apparatus for bipolar servo marks writing with high output |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4237189A (en) * | 1973-10-31 | 1980-12-02 | Robert J. Deffeyes | Polymodal magnetic recording media process for making and verifying the same and compositions useful therein |
US4114029A (en) * | 1974-10-16 | 1978-09-12 | E M I Limited | Magnetic recording |
JP2743960B2 (ja) * | 1986-02-17 | 1998-04-28 | 日本電信電話株式会社 | 磁気カード |
JPH0780384B2 (ja) * | 1989-02-23 | 1995-08-30 | 凸版印刷株式会社 | プリペイドカードおよびその不正使用防止方法 |
JPH0325703A (ja) * | 1989-06-23 | 1991-02-04 | Nippon Kaade Center Kk | 磁気カードのデータ書込方法 |
US5295258A (en) * | 1989-12-22 | 1994-03-15 | Tandem Computers Incorporated | Fault-tolerant computer system with online recovery and reintegration of redundant components |
US5157663A (en) * | 1990-09-24 | 1992-10-20 | Novell, Inc. | Fault tolerant computer system |
US5343422A (en) * | 1993-02-23 | 1994-08-30 | International Business Machines Corporation | Nonvolatile magnetoresistive storage device using spin valve effect |
-
1992
- 1992-03-20 FR FR9203388A patent/FR2688907B1/fr not_active Expired - Fee Related
-
1993
- 1993-03-12 EP EP93400639A patent/EP0561678A1/fr not_active Withdrawn
-
1996
- 1996-08-12 US US08/695,513 patent/US5867639A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5867639A (en) | 1999-02-02 |
EP0561678A1 (fr) | 1993-09-22 |
FR2688907A1 (fr) | 1993-09-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |