Adaptive system to allow multiple update and correction sessions on an optical data storage card
AssigneeDcard, Inc.
InventorsFrancis King, Jeffrey Liu
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Abstract
An adaptive method of managing system configuration in either a rewritable or a write-once optical card with zones formed in combination with an emulated drive buffer to behave as a Direct-access device. In the card medium, zones are formed for recording user data and the capacity of each zone is variable according to the available volume capacity, partition capacity, and user requirement, a spare area for recording alternative sectors; a defect list area for recording a defect list and a table area for usage and definition of user zones.
Claims42
A method for enabling multiple sessions of data updates in a card-shaped information-recording medium comprising:
- providing a plurality of data tracks on said card-shaped information-recording medium and allocating a segment of said data tracks for providing an address pointing to a multiple session management location in said data tracks employed for carrying out said multiple sessions of data updates.
A data access device for accessing data stored in card-shaped information-recording medium comprising:
- a plurality of data tracks disposed on said card-shaped information-recording medium including a first segment in said data tracks storing an address pointing to a multiple session management location in said data tracks employed for carrying out multiple sessions of data updates on said card-shaped recording medium.
A card-shaped information-recording medium comprising:
- a plurality of data tracks disposed in a data access area comprising data to enable a data handling system to process said card-shaped information-recording medium as a logic device.
Dependencies are inferred from the claim text.