DK131213B - Informationsregistrerings- og gengiveanlæg. - Google Patents
Informationsregistrerings- og gengiveanlæg.Info
- Publication number
- DK131213B DK131213B DK19769AA DK19769A DK131213B DK 131213 B DK131213 B DK 131213B DK 19769A A DK19769A A DK 19769AA DK 19769 A DK19769 A DK 19769A DK 131213 B DK131213 B DK 131213B
- Authority
- DK
- Denmark
- Prior art keywords
- information recording
- reproducing systems
- reproducing
- systems
- recording
- Prior art date
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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1215—Formatting, e.g. arrangement of data block or words on the record carriers on cards
-
- 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
- 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
- G11B20/1419—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 to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code
-
- 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
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1816—Testing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
-
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
-
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US69773568A | 1968-01-15 | 1968-01-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
DK131213B true DK131213B (da) | 1975-06-09 |
DK131213C DK131213C (ko) | 1975-11-10 |
Family
ID=24802323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK19769AA DK131213B (da) | 1968-01-15 | 1969-01-14 | Informationsregistrerings- og gengiveanlæg. |
Country Status (11)
Country | Link |
---|---|
US (1) | US3530448A (ko) |
AT (1) | AT298834B (ko) |
BE (1) | BE725197A (ko) |
CH (1) | CH493060A (ko) |
DK (1) | DK131213B (ko) |
ES (1) | ES361916A1 (ko) |
FI (1) | FI51015C (ko) |
FR (1) | FR1601336A (ko) |
GB (1) | GB1210587A (ko) |
NL (1) | NL160961C (ko) |
SE (1) | SE358761B (ko) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3898432A (en) * | 1973-06-20 | 1975-08-05 | Ibm | Read/write machine for magnetic stripped document card |
US3946206A (en) * | 1974-08-21 | 1976-03-23 | R. D. Products, Inc. | Magnetic-type information card and method and apparatus for encoding and reading |
US4017857A (en) * | 1975-03-03 | 1977-04-12 | Evans Jr Howard M | Computer time clock |
US4110803A (en) * | 1977-01-28 | 1978-08-29 | Xerox Corporation | Magnetic head assembly adjustable relative to roll, pitch and azimuth |
US4159799A (en) * | 1977-12-14 | 1979-07-03 | Bell Telephone Laboratories, Incorporated | Cassette unit and fixture for loading the unit with a planar member |
FR2452148A1 (fr) * | 1979-03-21 | 1980-10-17 | Automatisme Cie Gle | Procede d'enregistrement magnetique |
DE3241400A1 (de) * | 1982-11-09 | 1984-05-10 | Nixdorf Computer Ag, 4790 Paderborn | Verfahren und einrichtung zur fortlaufenden aufzeichnung von informationssignalen vorbestimmter laenge auf eine magnetspeicherspur |
GB2136618A (en) * | 1983-02-14 | 1984-09-19 | Bryan Frederick Nicholls | Data recording and storage arrangement |
GB2264580A (en) * | 1992-02-27 | 1993-09-01 | Siemens Measurements Ltd | Metering apparatus including a token reader |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL236625A (ko) * | 1958-03-03 | |||
US3136465A (en) * | 1961-12-20 | 1964-06-09 | Potter Instrument Co Inc | Tape back-space device |
US3395405A (en) * | 1965-06-01 | 1968-07-30 | Ibm | Transducing apparatus requiring no interrecord gaps on a record carrier |
US3444541A (en) * | 1965-06-21 | 1969-05-13 | Ibm | Tape inter-block gap size control |
-
1968
- 1968-01-15 US US697735A patent/US3530448A/en not_active Expired - Lifetime
- 1968-11-29 FR FR1601336D patent/FR1601336A/fr not_active Expired
- 1968-12-10 BE BE725197D patent/BE725197A/xx unknown
- 1968-12-17 FI FI683614A patent/FI51015C/fi active
- 1968-12-27 ES ES361916A patent/ES361916A1/es not_active Expired
-
1969
- 1969-01-02 GB GB254/69A patent/GB1210587A/en not_active Expired
- 1969-01-06 NL NL6900172.A patent/NL160961C/xx not_active IP Right Cessation
- 1969-01-09 AT AT21069A patent/AT298834B/de not_active IP Right Cessation
- 1969-01-13 CH CH35569A patent/CH493060A/de not_active IP Right Cessation
- 1969-01-13 SE SE00363/69A patent/SE358761B/xx unknown
- 1969-01-14 DK DK19769AA patent/DK131213B/da unknown
Also Published As
Publication number | Publication date |
---|---|
NL160961B (nl) | 1979-07-16 |
FI51015C (fi) | 1976-09-10 |
AT298834B (de) | 1972-05-25 |
NL6900172A (ko) | 1969-07-17 |
FR1601336A (ko) | 1970-08-17 |
SE358761B (ko) | 1973-08-06 |
NL160961C (nl) | 1979-12-17 |
ES361916A1 (es) | 1970-11-01 |
DK131213C (ko) | 1975-11-10 |
BE725197A (ko) | 1969-05-16 |
CH493060A (de) | 1970-06-30 |
US3530448A (en) | 1970-09-22 |
DE1900902A1 (de) | 1969-08-07 |
DE1900902B2 (de) | 1975-06-05 |
GB1210587A (en) | 1970-10-28 |
FI51015B (ko) | 1976-05-31 |
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