Systems and methods for testing unformatted optical recording media
AssigneeOracle International Corporation
InventorFaramarz Mahnad
Life of this patent
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AssigneeOracle International Corporation
InventorFaramarz Mahnad
Estimating the term…
Various embodiments herein include one or more of systems, methods, software, and/or data structures to test and evaluate unformatted optical media such as optical tape and optical discs. Advantageously, testing and evaluation can be performed earlier in the manufacturing process of the optical media to locate defects and/or other problems or issues with the optical media that can be addressed before additional manufacturing steps are performed and possible wasted. The systems and methods include at least two optical pickup units (OPUs), a first of which may be dedicated to writing digital data and the second of which may be dedicated to scanning, locating, tracking and/or reading the written data (when the optical media is moving in a first direction) in one of a plurality of manners. Information (e.g., optical signals such as sum, differential push pull and focus error signals) associated with the writing, scanning and retrieving of data at one or more locations or segments of the optical media may be used part of an analysis of one or more properties (e.g., signal to noise, signal jitter, thickness, roughness) of the optical media.
A device for writing data to and reading data from an optical media component, the device comprising:
A device for writing data to and reading data from an optical media component, the device comprising:
A device for writing data to and reading data from an optical media component, the device comprising:
A system for writing data to and reading data from an unformatted optical media component that is free of data track location features, the unformatted optical media component being movable in first and second opposing directions, the system comprising:
A method for use with an optical media component, the method comprising:
A method for use with an optical media component, the method comprising:
Dependencies are inferred from the claim text.