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US2008267047A1
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Secure optical data card system
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US2006248548A1
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Optical card drive with adaptive receiving tray and focusing adaptor
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US2006039246A1
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Adaptive system to allow multiple update and correction sessions on an optical data storage card
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US2005270942A1
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Optical disk tracking servo circuit enabled to compensate for non-continuous track segments or prolonged defect
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US2004218518A1
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Multi-layered data storage card
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US2004159707A1
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Layer structure and method of manufacture for optical memory strip (OMS)
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US2004076105A1
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Data access device using rotational head to access data stored in data strips and data arc segments or data circles
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US2002138808A1
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Data card with a full circular track for alignment and amplitude calibration
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US2002005432A1
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Positioning of a recording head for a data storage device
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US2001033446A1
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Data access device implemented with open and closed control loops to access data stored in discrete stepwise segments
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US6545831B1
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Servo-sector arrangement over several data arcs for a rotational head data recording and retrieving system
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EP1086464A1
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Storage card and devices
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US6311893B1
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Optical data access system with data card reader having a single rotational moving pickup head
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