FR1238490A - Dispositif pour rendre visibles des signaux magnétiques enregistrés - Google Patents
Dispositif pour rendre visibles des signaux magnétiques enregistrésInfo
- Publication number
- FR1238490A FR1238490A FR803685A FR803685A FR1238490A FR 1238490 A FR1238490 A FR 1238490A FR 803685 A FR803685 A FR 803685A FR 803685 A FR803685 A FR 803685A FR 1238490 A FR1238490 A FR 1238490A
- Authority
- FR
- France
- Prior art keywords
- magnetic signals
- recorded magnetic
- signals visible
- making recorded
- making
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
-
- 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
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G19/00—Processes using magnetic patterns; Apparatus therefor, i.e. magnetography
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
- G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Artificial Intelligence (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Magnetic Heads (AREA)
- Television Signal Processing For Recording (AREA)
- Paints Or Removers (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US757781A US3013206A (en) | 1958-08-28 | 1958-08-28 | Magnetic reader |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1238490A true FR1238490A (fr) | 1960-08-12 |
Family
ID=25049197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR803685A Expired FR1238490A (fr) | 1958-08-28 | 1959-08-27 | Dispositif pour rendre visibles des signaux magnétiques enregistrés |
Country Status (3)
Country | Link |
---|---|
US (1) | US3013206A (fr) |
FR (1) | FR1238490A (fr) |
GB (1) | GB927350A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2415341A1 (fr) * | 1978-01-24 | 1979-08-17 | Crouzet Sa | Ticket a affichage magnetique |
EP0388712A2 (fr) * | 1989-03-21 | 1990-09-26 | British Steel plc | Dispositif pour inspecter un patron magnétique |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3181059A (en) * | 1961-10-02 | 1965-04-27 | Gerald L Mohnkern | Optical polarity indicator for magnetically recorded signals |
US3292171A (en) * | 1964-08-31 | 1966-12-13 | Collins Radio Co | Display device depositing suspended particles by selective magnetization of a viewable surface |
US3491352A (en) * | 1967-01-03 | 1970-01-20 | Honeywell Inc | Strobe system employing a multichannel recording transducer for recording strobe bits |
US3683382A (en) * | 1969-05-29 | 1972-08-08 | Honeywell Inc | Recording medium responsive to force fields and apparatus for recording and reproducing signals on the medium |
US3978398A (en) * | 1973-11-29 | 1976-08-31 | Rockwell International Corporation | Method for nondestructive magnetic inspection of an object employing a putty-like magnetic recording medium |
US4032980A (en) * | 1976-07-02 | 1977-06-28 | Xerox Corporation | Recorded magnetic member viewing apparatus |
US4101905A (en) * | 1976-12-10 | 1978-07-18 | Ncr Corporation | Method for writing and viewing magnetic human readable characters and viewing means therefor |
US4659619A (en) * | 1981-06-11 | 1987-04-21 | Thalatta, Inc. | Color changeable fabric |
US4457723A (en) * | 1981-06-11 | 1984-07-03 | Thalatta, Inc. | Color changeable fabric |
US4608992A (en) * | 1983-08-18 | 1986-09-02 | Salomon Hakim | External magnetic detection of physiopathological and other parameters |
US4745267A (en) * | 1983-12-28 | 1988-05-17 | Fairview Partners | Fraudulent card intercept system |
US4626669A (en) * | 1983-12-28 | 1986-12-02 | Fairview Partners | Intercept system for intercepting stolen, lost and fraudulent cards |
US5006000A (en) * | 1990-01-23 | 1991-04-09 | House Charles E | Educational aid with substitutable magnetic items |
US5754044A (en) * | 1994-12-05 | 1998-05-19 | Tanielian; Aram | Magnetooptic system for article defects and flaws detection |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB439324A (en) * | 1934-09-26 | 1935-12-04 | Alan Marsh Armour | Improvements relating to a method of and apparatus for observing the nature of a magnetic field |
US2530564A (en) * | 1948-06-30 | 1950-11-21 | Rca Corp | Editing and inspection of invisible sound tracks |
US2764733A (en) * | 1952-05-03 | 1956-09-25 | Magnaflux Corp | Method and means for detecting flaws |
-
1958
- 1958-08-28 US US757781A patent/US3013206A/en not_active Expired - Lifetime
-
1959
- 1959-08-25 GB GB29070/59A patent/GB927350A/en not_active Expired
- 1959-08-27 FR FR803685A patent/FR1238490A/fr not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2415341A1 (fr) * | 1978-01-24 | 1979-08-17 | Crouzet Sa | Ticket a affichage magnetique |
EP0388712A2 (fr) * | 1989-03-21 | 1990-09-26 | British Steel plc | Dispositif pour inspecter un patron magnétique |
EP0388712A3 (fr) * | 1989-03-21 | 1992-07-08 | British Steel plc | Dispositif pour inspecter un patron magnétique |
Also Published As
Publication number | Publication date |
---|---|
GB927350A (en) | 1963-05-29 |
US3013206A (en) | 1961-12-12 |
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