SE335642B - - Google Patents
Info
- Publication number
- SE335642B SE335642B SE00780/66A SE78066A SE335642B SE 335642 B SE335642 B SE 335642B SE 00780/66 A SE00780/66 A SE 00780/66A SE 78066 A SE78066 A SE 78066A SE 335642 B SE335642 B SE 335642B
- Authority
- SE
- Sweden
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
- G11B20/1419—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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US427348A US3390284A (en) | 1965-01-22 | 1965-01-22 | Double frequency detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE335642B true SE335642B (xx) | 1971-06-01 |
Family
ID=23694485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE00780/66A SE335642B (xx) | 1965-01-22 | 1966-01-21 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3390284A (xx) |
| CH (1) | CH459297A (xx) |
| FR (1) | FR1462702A (xx) |
| GB (1) | GB1073497A (xx) |
| NL (1) | NL153345B (xx) |
| SE (1) | SE335642B (xx) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3518554A (en) * | 1967-05-22 | 1970-06-30 | Honeywell Inc | Detection of double transition recording |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2462100A (en) * | 1946-04-18 | 1949-02-22 | Fed Telecomm Lab Inc | Demodulator system for time modulated pulses |
| GB727439A (en) * | 1953-01-27 | 1955-03-30 | Gen Electric Co Ltd | Improvements in or relating to electric pulse generators |
| US2972735A (en) * | 1955-05-04 | 1961-02-21 | Lab For Electronics Inc | Data processing |
| US3108265A (en) * | 1957-08-14 | 1963-10-22 | Time Inc | Magnetic data recording system |
| US3217329A (en) * | 1960-05-03 | 1965-11-09 | Potter Instrument Co Inc | Dual track high density recording system |
| US3069568A (en) * | 1961-03-06 | 1962-12-18 | Ibm | Synchronization of phase of (dividing) counter output pulses by continually resetting counter with data pulses |
| NL295627A (xx) * | 1962-07-23 | |||
| US3244986A (en) * | 1962-10-08 | 1966-04-05 | Ibm | Detection of bi-phase digital signals |
| US3337747A (en) * | 1963-07-31 | 1967-08-22 | Honeywell Inc | Analogue phase and frequency synchronizer for data communications |
-
1965
- 1965-01-22 US US427348A patent/US3390284A/en not_active Expired - Lifetime
-
1966
- 1966-01-03 FR FR44580A patent/FR1462702A/fr not_active Expired
- 1966-01-21 CH CH84566A patent/CH459297A/de unknown
- 1966-01-21 NL NL666600855A patent/NL153345B/xx not_active IP Right Cessation
- 1966-01-21 GB GB2779/66A patent/GB1073497A/en not_active Expired
- 1966-01-21 SE SE00780/66A patent/SE335642B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH459297A (de) | 1968-07-15 |
| NL6600855A (xx) | 1966-07-25 |
| FR1462702A (fr) | 1966-04-15 |
| NL153345B (nl) | 1977-05-16 |
| GB1073497A (en) | 1967-06-28 |
| US3390284A (en) | 1968-06-25 |