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US 8,619,528 B2Granted
Method and system for optical calibration
AssigneeSeagate Technology LLC
InventorsHamid Ghazvini, David Kuo, Minh Huong Le, Kim Yang Lee, HongYing Wang, Nobuo Kurataka, Yautzong Hsu, Henry Hung Yang
Life of this patent
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Abstract
A system and method of calibrating optical measuring equipment includes optically measuring discrete objects of a first known predictable pattern from a calibration apparatus, wherein the first known predictable pattern is a bit pattern. A recording surface optical reader is calibrated based on the optically measuring. Using the first known predictable pattern, contamination is filtered from the results of the optically measuring.
Claims20
A method comprising:
- optically measuring discrete objects of a first known predictable pattern from a calibration apparatus, wherein said first known predictable pattern is a bit pattern;
- and
- calibrating a recording surface optical reader based on said optically measuring.
An apparatus comprising:
- a substrate;
- and
- a first predetermined predictable bit pattern of objects on said substrate,
- wherein said objects are operable to be individually measured by a recording surface optical reader and wherein said recording surface optical reader comprises a Candela tool.
1 more element
An apparatus comprising:
- means for optically measuring discrete objects of a first known predictable pattern from a calibration apparatus, wherein said first known predictable pattern is a bit pattern;
- and
- means for calibrating a recording surface optical reader based on said optically measuring.
An apparatus comprising:
- a substrate;
- a first predetermined predictable bit pattern of first objects on said substrate, wherein said first objects are operable to be individually measured by a recording surface optical reader;
- and
- a second predetermined predictable bit pattern of second objects on said substrate, wherein said second objects are operable to be individually measured by said recording surface optical reader.
1 more element
Dependencies are inferred from the claim text.