Data card with a full circular track for alignment and amplitude calibration

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6934098
APP PUB NO 20020138808A1
SERIAL NO

09969288

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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This invention discloses a flat data storage medium that includes a plurality of substantially parallel data arc-segments. The data arcs further include at least one full circle data track provided for obtaining a measurement of an average amplitude of data signals over the full circle data track for calibrating a pickup head implemented for reading data from the data arc-segments. This invention further discloses a data storage system for accessing data stored in a data storage medium. The data storage system includes dynamic head loading/unloading system that includes a handle for pushing a linkage connected to the handle for loading and unloading the data storage medium to an engaged and disengaged positions relative to a pickup head for accessing data disposed on the data storage medium. The dynamic head loading/unloading system further includes a locking mechanism for automatically locking the data storage medium inside the data storage system when the linkage is disposed at an engaged-position. The dynamic head loading/unloading system further includes a data-storage medium orientation-selection for cooperating and adapting the data storage medium inside the data storage system only when the data storage medium is inserted into the data storage system in a predefined orientation.

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Patent Owner(s)

Patent OwnerAddress
DCARD INC560 VALLEY WAY MILPITAS CA 95035

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
King, Francis K San Jose, CA 25 217
Liu, Jeffrey F San Jose, CA 12 89
Mao, Shand-Ling Hacienda Heights, CA 4 40

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