BE726753A - - Google Patents
Info
- Publication number
- BE726753A BE726753A BE726753DA BE726753A BE 726753 A BE726753 A BE 726753A BE 726753D A BE726753D A BE 726753DA BE 726753 A BE726753 A BE 726753A
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Dc Digital Transmission (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US69771768A | 1968-01-15 | 1968-01-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE726753A true BE726753A (US07534539-20090519-C00280.png) | 1969-06-16 |
Family
ID=24802259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE726753D BE726753A (US07534539-20090519-C00280.png) | 1968-01-15 | 1969-01-10 |
Country Status (9)
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3622894A (en) * | 1970-12-07 | 1971-11-23 | Ibm | Predetection signal compensation |
| US3795903A (en) * | 1972-09-29 | 1974-03-05 | Ibm | Modified phase encoding |
| US3828167A (en) * | 1972-10-10 | 1974-08-06 | Singer Co | Detector for self-clocking data with variable digit periods |
| NL7315904A (nl) * | 1973-11-21 | 1975-05-23 | Philips Nv | Inrichting voor omzetting van een analoog en een binair signaal. |
| US3938083A (en) * | 1974-11-27 | 1976-02-10 | Burroughs Corporation | Parity checking a double-frequency coherent-phase data signal |
| US4394695A (en) * | 1981-02-02 | 1983-07-19 | Sharp Corporation | Method and apparatus for evaluating recording systems |
| US4392226A (en) * | 1981-09-28 | 1983-07-05 | Ncr Corporation | Multiple source clock encoded communications error detection circuit |
| US4486795A (en) * | 1981-12-23 | 1984-12-04 | Pioneer Electronic Corporation | Disc drive servo system |
| JPS5930217A (ja) * | 1982-08-06 | 1984-02-17 | インタ−ナシヨナル ビジネス マシ−ンズ コ−ポレ−シヨン | 誤り検出機能を有する復調器 |
| US4502142A (en) * | 1982-09-07 | 1985-02-26 | Lockheed Electronics Company, Inc. | Apparatus for detecting errors in a digital data stream encoded in a double density code |
| US5251220A (en) * | 1990-11-28 | 1993-10-05 | Scientific-Atlanta, Inc. | Method and apparatus for error detection and processing |
| JPH0793056A (ja) * | 1993-09-24 | 1995-04-07 | Toshiba Corp | リセット信号検知方法及び装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2985715A (en) * | 1956-10-04 | 1961-05-23 | Hughes Aircraft Co | Gating system |
| US3054990A (en) * | 1958-09-24 | 1962-09-18 | Ibm | Noise eliminator |
| US3335224A (en) * | 1963-06-21 | 1967-08-08 | Rca Corp | Signal distortion detection by sampling digital diphase signals at twice the bit repetition rate |
| DE1287608B (US07534539-20090519-C00280.png) * | 1964-07-23 | 1969-01-23 |
-
1968
- 1968-01-15 US US697717A patent/US3524164A/en not_active Expired - Lifetime
- 1968-12-04 GB GB57457/68A patent/GB1213688A/en not_active Expired
- 1968-12-20 FR FR1600715D patent/FR1600715A/fr not_active Expired
- 1968-12-24 ES ES361821A patent/ES361821A1/es not_active Expired
-
1969
- 1969-01-10 BE BE726753D patent/BE726753A/xx unknown
- 1969-01-11 DE DE1901225A patent/DE1901225C3/de not_active Expired
- 1969-01-13 NL NL6900495A patent/NL6900495A/xx not_active Application Discontinuation
- 1969-01-13 SE SE6900361A patent/SE387458B/xx unknown
- 1969-01-14 CH CH41469A patent/CH476347A/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE1901225A1 (de) | 1969-09-04 |
| GB1213688A (en) | 1970-11-25 |
| US3524164A (en) | 1970-08-11 |
| DE1901225B2 (de) | 1978-10-26 |
| NL6900495A (US07534539-20090519-C00280.png) | 1969-07-17 |
| CH476347A (de) | 1969-07-31 |
| ES361821A1 (es) | 1970-11-01 |
| FR1600715A (US07534539-20090519-C00280.png) | 1970-07-27 |
| DE1901225C3 (de) | 1979-06-13 |
| SE387458B (sv) | 1976-09-06 |
