FR1508670A - Système de lecture d'enregistrements à minutage autonome - Google Patents

Système de lecture d'enregistrements à minutage autonome

Info

Publication number
FR1508670A
FR1508670A FR91834A FR91834A FR1508670A FR 1508670 A FR1508670 A FR 1508670A FR 91834 A FR91834 A FR 91834A FR 91834 A FR91834 A FR 91834A FR 1508670 A FR1508670 A FR 1508670A
Authority
FR
France
Prior art keywords
self
playback system
recording playback
timer recording
timer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR91834A
Other languages
English (en)
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MONROE INT
MONROE INTERNATIONAL CORP
Original Assignee
MONROE INT
MONROE INTERNATIONAL CORP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MONROE INT, MONROE INTERNATIONAL CORP filed Critical MONROE INT
Application granted granted Critical
Publication of FR1508670A publication Critical patent/FR1508670A/fr
Expired legal-status Critical Current

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 OR CALCULATING; 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)
FR91834A 1966-02-21 1967-01-19 Système de lecture d'enregistrements à minutage autonome Expired FR1508670A (fr)

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
FR1508670A true FR1508670A (fr) 1968-01-05

Family

ID=26812789

Family Applications (1)

Application Number Title Priority Date Filing Date
FR91834A Expired FR1508670A (fr) 1966-02-21 1967-01-19 Système de lecture d'enregistrements à minutage autonome

Country Status (8)

Country Link
US (1) US3750108A (enEXAMPLES)
BE (1) BE692891A (enEXAMPLES)
CH (1) CH484476A (enEXAMPLES)
DE (1) DE1524925A1 (enEXAMPLES)
FR (1) FR1508670A (enEXAMPLES)
GB (1) GB1181564A (enEXAMPLES)
NL (1) NL6700438A (enEXAMPLES)
SE (1) SE345176B (enEXAMPLES)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
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
US3947662A (en) * 1974-12-31 1976-03-30 International Business Machines Corporation Distorted two frequency coded data interpreting method and apparatus
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
US3969613A (en) * 1975-02-03 1976-07-13 International Business Machines Corporation 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
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE1524925A1 (de) 1970-12-17
SE345176B (enEXAMPLES) 1972-05-15
US3750108A (en) 1973-07-31
BE692891A (enEXAMPLES) 1967-07-03
NL6700438A (enEXAMPLES) 1967-08-22
GB1181564A (en) 1970-02-18
CH484476A (de) 1970-01-15

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