Magneto-optical reading device for multi-track magnetic tapes
AssigneeThales
InventorsJean-Claude Jacquet, Stephane Bertrand, Françoise Le Texier
Life of this patent
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Abstract
The disclosure relates to a magneto-optical reading device for multi-track magnetic tapes, including a flat large incident beam directed onto the active part of a magneto-optical read head and reflected by this head onto an array of sensors, characterized in that it includes a correction device able to move the zone of incidence of the beam on the read head in order to keep the beam optimally positioned on the active part of the read head as the latter suffers progressive wear. The invention increases the useful working life of such a reading device.
Claims7
A magneto-optical reading device for multi-track magnetic tapes, comprising:
- a magnet-optical read head configured to receive a flat large incident beam at an active part on an initial surface of the magneto-optical read head configured to contact the multi-track magnetic tape prior to any wear on the initial surface due to passage of the multi-track magnetic tape and to reflect the flat large incident beam from the active part onto an array of sensors as a reflected beam;
- and
- a correction device configured to move a zone of incidence of said flat large incident beam from the active part on the initial surface to a new active part on a worn surface on said read head in order to keep said beam optimally positioned on said active part of said read head after wear of the initial surface due to the passage of the multi-track magnetic tape.
A magneto-optical reading device for multi-track magnetic tapes, comprising:
- a magnet-optical read head means for receiving a flat large incident beam at an active part on an initial surface of the magneto-optical read head means configured to contact the multi-track magnetic tape prior to any wear on the initial surface due to passage of the multi-track magnetic tape and to reflect the flat large incident beam from the active part onto an array of sensors as a reflected beam;
- and
- a correction means for moving a zone of incidence of said flat large incident beam from the active part on the initial surface to a new active part on a worn surface on said read head means in order to keep said beam optimally positioned on said active part of said read head means after wear of the initial surface due to the passage of the multi-track magnetic tape.
Dependencies are inferred from the claim text.