BE740030A - - Google Patents
Info
- Publication number
- BE740030A BE740030A BE740030DA BE740030A BE 740030 A BE740030 A BE 740030A BE 740030D A BE740030D A BE 740030DA BE 740030 A BE740030 A BE 740030A
- Authority
- BE
- Belgium
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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US76653168A | 1968-10-10 | 1968-10-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE740030A true BE740030A (xx) | 1970-04-09 |
Family
ID=25076722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE740030D BE740030A (xx) | 1968-10-10 | 1969-10-09 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3646546A (xx) |
| BE (1) | BE740030A (xx) |
| DE (1) | DE1950924A1 (xx) |
| FR (1) | FR2020343A1 (xx) |
| NL (1) | NL6915397A (xx) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3737895A (en) * | 1971-08-02 | 1973-06-05 | Edmac Ass Inc | Bi-phase data recorder |
| US3806816A (en) * | 1972-11-08 | 1974-04-23 | Nasa | Pulse code modulated signal synchronizer |
| US3982195A (en) * | 1975-05-29 | 1976-09-21 | Teletype Corporation | Method and apparatus for decoding diphase signals |
| CH638357A5 (de) * | 1979-07-06 | 1983-09-15 | Siemens Ag Albis | Schaltungsanordnung zur automatischen bitratenerkennung an einem flankencodierten informationssignal. |
| US4606051A (en) * | 1983-11-10 | 1986-08-12 | Universal Data Systems, Inc. | QPSK demodulator with I and Q post-detection data correction |
| US4769723A (en) * | 1985-12-30 | 1988-09-06 | Mcdonnel Douglas Helicopter Co. | Multiplexed bus data encoder and decoder for facilitating data recording |
-
1968
- 1968-10-10 US US766531A patent/US3646546A/en not_active Expired - Lifetime
-
1969
- 1969-10-09 DE DE19691950924 patent/DE1950924A1/de active Pending
- 1969-10-09 BE BE740030D patent/BE740030A/xx unknown
- 1969-10-10 FR FR6934742A patent/FR2020343A1/fr not_active Withdrawn
- 1969-10-10 NL NL6915397A patent/NL6915397A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1950924A1 (de) | 1970-04-16 |
| NL6915397A (xx) | 1970-04-14 |
| FR2020343A1 (xx) | 1970-07-10 |
| US3646546A (en) | 1972-02-29 |