LU45171A1 - - Google Patents
Info
- Publication number
- LU45171A1 LU45171A1 LU45171DA LU45171A1 LU 45171 A1 LU45171 A1 LU 45171A1 LU 45171D A LU45171D A LU 45171DA LU 45171 A1 LU45171 A1 LU 45171A1
- Authority
- LU
- Luxembourg
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
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
-
- 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
- G11B20/16—Digital recording or reproducing using non self-clocking codes, i.e. the clock signals are either recorded in a separate clocking track or in a combination of several information tracks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Digital Magnetic Recording (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR921493A FR1359158A (fr) | 1963-01-15 | 1963-01-15 | Perfectionnements apportés aux dispositifs d'enregistrement d'informations sur un support magnétique, en particulier sur une bande magnétique multipiste, et de lecture des informations ainsi enregistrées |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU45171A1 true LU45171A1 (fr) | 1964-03-07 |
Family
ID=8794748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU45171D LU45171A1 (fr) | 1963-01-15 | 1964-01-07 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3354446A (fr) |
| BE (1) | BE642229A (fr) |
| CH (1) | CH439394A (fr) |
| DE (1) | DE1449738A1 (fr) |
| ES (1) | ES295278A1 (fr) |
| FR (1) | FR1359158A (fr) |
| GB (1) | GB1038114A (fr) |
| LU (1) | LU45171A1 (fr) |
| NL (1) | NL6400253A (fr) |
| SE (1) | SE316507B (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1275629B (de) * | 1964-09-30 | 1968-08-22 | Varian Internat A G | Verfahren zur Befreiung wiederholbarer Spannungsverlaeufe von statistischen Stoerungen und Anordnung zur Durchfuehrung des Verfahrens |
| JPS5165915A (en) * | 1974-12-04 | 1976-06-08 | Fujitsu Ltd | Toratsukukanisozurehoshohoshiki |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2813259A (en) * | 1954-04-12 | 1957-11-12 | Monroe Calculating Machine | Magnetic tape recording systems |
| US3281804A (en) * | 1957-08-06 | 1966-10-25 | Dirks Gerhard | Redundant digital data storage system |
| US3264623A (en) * | 1960-05-03 | 1966-08-02 | Potter Instrument Co Inc | High density dual track redundant recording system |
-
0
- BE BE642229D patent/BE642229A/xx unknown
-
1963
- 1963-01-15 FR FR921493A patent/FR1359158A/fr not_active Expired
-
1964
- 1964-01-07 LU LU45171D patent/LU45171A1/xx unknown
- 1964-01-08 CH CH19964A patent/CH439394A/fr unknown
- 1964-01-10 GB GB1290/64A patent/GB1038114A/en not_active Expired
- 1964-01-14 US US337686A patent/US3354446A/en not_active Expired - Lifetime
- 1964-01-14 SE SE416/64A patent/SE316507B/xx unknown
- 1964-01-14 ES ES295278A patent/ES295278A1/es not_active Expired
- 1964-01-15 NL NL6400253A patent/NL6400253A/xx unknown
- 1964-01-15 DE DE19641449738 patent/DE1449738A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1449738A1 (de) | 1969-01-23 |
| FR1359158A (fr) | 1964-04-24 |
| BE642229A (fr) | |
| US3354446A (en) | 1967-11-21 |
| SE316507B (fr) | 1969-10-27 |
| NL6400253A (fr) | 1964-07-16 |
| ES295278A1 (es) | 1964-06-16 |
| CH439394A (fr) | 1967-07-15 |
| GB1038114A (en) | 1966-08-03 |