DE2311950A1 - Einrichtung zum aufzeichnen und abtasten von informationen auf magnetisierbaren kennkarten - Google Patents
Einrichtung zum aufzeichnen und abtasten von informationen auf magnetisierbaren kennkartenInfo
- Publication number
- DE2311950A1 DE2311950A1 DE19732311950 DE2311950A DE2311950A1 DE 2311950 A1 DE2311950 A1 DE 2311950A1 DE 19732311950 DE19732311950 DE 19732311950 DE 2311950 A DE2311950 A DE 2311950A DE 2311950 A1 DE2311950 A1 DE 2311950A1
- Authority
- DE
- Germany
- Prior art keywords
- gate
- input
- scanning
- information
- flip
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
- G11B20/1415—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol conversion to or from pulse frequency coding
-
- 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
-
- 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
- G06K7/083—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 inductive
- G06K7/084—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 inductive sensing magnetic material by relative movement detecting flux changes without altering its magnetised state
-
- 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
- G11B5/80—Card carriers
Landscapes
- Engineering & Computer Science (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH74473A CH554567A (de) | 1973-01-19 | 1973-01-19 | Einrichtung zum aufzeichnen und abtasten von informationen auf magnetisierbaren kennkarten. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2311950A1 true DE2311950A1 (de) | 1974-08-08 |
Family
ID=4194190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19732311950 Pending DE2311950A1 (de) | 1973-01-19 | 1973-03-07 | Einrichtung zum aufzeichnen und abtasten von informationen auf magnetisierbaren kennkarten |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH554567A (fr) |
| DE (1) | DE2311950A1 (fr) |
| FR (1) | FR2215157A7 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176259A (en) * | 1976-10-04 | 1979-11-27 | Honeywell Information Systems, Inc. | Read apparatus |
-
1973
- 1973-01-19 CH CH74473A patent/CH554567A/xx not_active IP Right Cessation
- 1973-03-07 DE DE19732311950 patent/DE2311950A1/de active Pending
-
1974
- 1974-01-17 FR FR7401560A patent/FR2215157A7/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH554567A (de) | 1974-09-30 |
| FR2215157A7 (fr) | 1974-08-19 |
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