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Method and device for the regeneration of reproduced data signals recorded on an optical disc

Assignee: Thales SA
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Filing: 1984-06-26
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Granted: —
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Expires: 2004-06-26
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Abstract

Abstract Translated from French La présente invention concerne la remise en forme d'un signal de lecture de façon à compenser des distorsions éventuelles, notamment de son rapport cyclique. Durant un intervalle de temps choisi par un dispositif de commande (5) en fonction d'informations de synchronisation préinscrites sur le disque. L'information de synchronisation est intégrée par un intégrateur (41). Le seuil de tension obtenu est comparé à l'information lue par un circuit de comparaison (42). Le résultat de la comparaison donne lieu à un signal (S) mis sous forme rectangulaire. Ce signal peut servir utilement au réglage de phase du système de lecture. Le dispositif peut être utilisé notamment dans un dispositif de remise en phase de l'horloge donnant les impulsions de lecture. The present invention relates to the reshaping of a read signal so as to compensate for possible distortions, in particular of its duty cycle. During an interval of time chosen by a control device (5) according to synchronization information pre-written on the disc. The synchronization information is integrated by an integrator (41). The voltage threshold obtained is compared with the information read by a comparison circuit (42). The result of the comparison gives rise to a signal (S) put in rectangular form. This signal can usefully be used to adjust the phase of the reading system. The device can be used in particular in a device for resetting the clock giving the read pulses.

Inventors

  • 👤 René Romeas
  • 👤 Daniel Lecomte

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 18:33
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/08; H03K5/082; H03K5/084; G; G11; G11B; G11B20/00; G11B20/10; G11B27/00; G11B27/10; G11B27/19; G11B27/24; G11B27/28; G11B27/30; G11B27/3027; G11B7/00; G11B7/004; G11B7/005; G11B2220/00; G11B2220/20

Claims Analysis

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References Cited (Backward Citations)

DE2139404A1 Cited
GB1523307A Cited
GB2085685A Cited
EP0051343A2 Cited
EP0077075A1 Cited

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