FR2420822A1 - Dispositif pour controler la duplication des bandes magnetiques - Google Patents

Dispositif pour controler la duplication des bandes magnetiques

Info

Publication number
FR2420822A1
FR2420822A1 FR7808178A FR7808178A FR2420822A1 FR 2420822 A1 FR2420822 A1 FR 2420822A1 FR 7808178 A FR7808178 A FR 7808178A FR 7808178 A FR7808178 A FR 7808178A FR 2420822 A1 FR2420822 A1 FR 2420822A1
Authority
FR
France
Prior art keywords
calibrator
amplifier stages
magnetic tape
read heads
tape
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.)
Granted
Application number
FR7808178A
Other languages
English (en)
Other versions
FR2420822B1 (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.)
PATHE MARCONI EMI
Original Assignee
PATHE MARCONI EMI
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 PATHE MARCONI EMI filed Critical PATHE MARCONI EMI
Priority to FR7808178A priority Critical patent/FR2420822A1/fr
Publication of FR2420822A1 publication Critical patent/FR2420822A1/fr
Application granted granted Critical
Publication of FR2420822B1 publication Critical patent/FR2420822B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

Dispositif pour contrôler la duplication des bandes magnétiques enregistrées à plusieurs pistes, notamment à pistes stéréophoniques. Le dispositif 1, dit calibrateur, est posé sur la platine 2 d'un enregistreur esclave 3 normalement relié à un lecteur maître, de manière à lire par sa tête 22 sur la bande 14, à vitesse de duplication, un signal de contrôle injecté à l'entrée de l'esclave 3 et enregistré par les têtes 11a, 11b de l'esclave. Le calibrateur comporte quatre chaînes d'amplification pour les quatre pistes de la bande, et deux VU-metres commutables pour chaque paire de pistes, en parallèle sur deux sorties 25a, 25b pour un oscilloscope. Les chaînes d'amplification comportent deux sensiblilités pour le contrôle des aigus. Application au contrôle périodique des enregistreurs esclaves dans la duplication des bandes magnétiques.
FR7808178A 1978-03-21 1978-03-21 Dispositif pour controler la duplication des bandes magnetiques Granted FR2420822A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7808178A FR2420822A1 (fr) 1978-03-21 1978-03-21 Dispositif pour controler la duplication des bandes magnetiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7808178A FR2420822A1 (fr) 1978-03-21 1978-03-21 Dispositif pour controler la duplication des bandes magnetiques

Publications (2)

Publication Number Publication Date
FR2420822A1 true FR2420822A1 (fr) 1979-10-19
FR2420822B1 FR2420822B1 (fr) 1980-10-17

Family

ID=9206095

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7808178A Granted FR2420822A1 (fr) 1978-03-21 1978-03-21 Dispositif pour controler la duplication des bandes magnetiques

Country Status (1)

Country Link
FR (1) FR2420822A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519762A (en) * 1967-09-25 1970-07-07 Collins Radio Co Tape duplicator with master and copy tapes driven by same spindle and capstan means

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519762A (en) * 1967-09-25 1970-07-07 Collins Radio Co Tape duplicator with master and copy tapes driven by same spindle and capstan means

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
EXBK/56 *
EXBK/57 *
EXBK/68 *
EXBK/75 *

Also Published As

Publication number Publication date
FR2420822B1 (fr) 1980-10-17

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Legal Events

Date Code Title Description
ST Notification of lapse