BE692891A - - Google Patents
Info
- Publication number
- BE692891A BE692891A BE692891DA BE692891A BE 692891 A BE692891 A BE 692891A BE 692891D A BE692891D A BE 692891DA BE 692891 A BE692891 A BE 692891A
- 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
-
- 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
- G06K7/01—Details
- G06K7/016—Synchronisation of sensing process
- G06K7/0166—Synchronisation of sensing process by means of clock-signals derived from the code marks, e.g. self-clocking code
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)
- Measurement Of Unknown Time Intervals (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52911566A | 1966-02-21 | 1966-02-21 | |
| US00115044A US3750108A (en) | 1966-02-21 | 1971-02-12 | Self-clocking record sensing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE692891A true BE692891A (US06346242-20020212-C00066.png) | 1967-07-03 |
Family
ID=26812789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE692891D BE692891A (US06346242-20020212-C00066.png) | 1966-02-21 | 1967-01-19 |
Country Status (8)
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1425033A (en) * | 1972-03-10 | 1976-02-18 | Hendrickson A E | Data signal recogniion apparatus |
| US3859510A (en) * | 1973-12-26 | 1975-01-07 | Ibm | Data separation circuitry for reading information from a moving support |
| US3974523A (en) * | 1974-09-30 | 1976-08-10 | Hewlett-Packard Company | Speed invariant decoding of digital information from a magnetic tape |
| FR2443170A1 (fr) * | 1974-11-08 | 1980-06-27 | Ibm | Procede de codage de donnees en code f2f, et procede et appareil pour l'interpretation de ces donnees |
| US3947662A (en) * | 1974-12-31 | 1976-03-30 | International Business Machines Corporation | Distorted two frequency coded data interpreting method and apparatus |
| US3959626A (en) * | 1975-02-03 | 1976-05-25 | International Business Machines Corporation | Distorted two frequency coded data interpreting method and apparatus |
| US3969613A (en) * | 1975-02-03 | 1976-07-13 | International Business Machines Corporation | Two frequency coded data interpreting method and apparatus |
| US3978319A (en) * | 1975-10-29 | 1976-08-31 | International Business Machines Corporation | Universal self-clocking code reading method and apparatus |
| US4403158A (en) * | 1981-05-15 | 1983-09-06 | Inmos Corporation | Two-way regulated substrate bias generator |
| US4441193A (en) * | 1982-05-03 | 1984-04-03 | Burroughs Corporation | Frequency-encoding circuit for reducing distortion |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2972735A (en) * | 1955-05-04 | 1961-02-21 | Lab For Electronics Inc | Data processing |
| US3138759A (en) * | 1960-11-23 | 1964-06-23 | Bell Telephone Labor Inc | Pulse spacing detection circuit |
| US3191058A (en) * | 1961-10-19 | 1965-06-22 | Sperry Rand Corp | Detection circuit utilizing opposite conductiviity transistors to detect charge on acapacitor |
| GB1078782A (en) * | 1963-03-04 | 1967-08-09 | Crosfield Electronics Ltd | Improvements in or relating to electronic circuits |
| FR86907E (fr) * | 1964-08-24 | 1966-05-06 | Ibm France | Procédé de transmission de données et dispositif réalisant cette transmission |
-
1967
- 1967-01-11 NL NL6700438A patent/NL6700438A/xx unknown
- 1967-01-19 FR FR91834A patent/FR1508670A/fr not_active Expired
- 1967-01-19 BE BE692891D patent/BE692891A/xx unknown
- 1967-02-03 DE DE19671524925 patent/DE1524925A1/de active Pending
- 1967-02-07 CH CH178267A patent/CH484476A/de not_active IP Right Cessation
- 1967-02-20 SE SE2289/67A patent/SE345176B/xx unknown
- 1967-02-21 GB GB8273/67A patent/GB1181564A/en not_active Expired
-
1971
- 1971-02-12 US US00115044A patent/US3750108A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR1508670A (fr) | 1968-01-05 |
| NL6700438A (US06346242-20020212-C00066.png) | 1967-08-22 |
| US3750108A (en) | 1973-07-31 |
| CH484476A (de) | 1970-01-15 |
| GB1181564A (en) | 1970-02-18 |
| SE345176B (US06346242-20020212-C00066.png) | 1972-05-15 |
| DE1524925A1 (de) | 1970-12-17 |
