Method and apparatus for optimizing optical recording
AssigneeMarvell International Ltd.
InventorPeter J. Kivits
Life of this patent
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Abstract
Aspects of the disclosure can provide a method to optimize optical recording. The method can include recording a pre-defined pattern on an optical medium according to a first write strategy, measuring edge timings corresponding to the pre-defined pattern recorded on the optical medium, determining a second write strategy including at least timing modifications to the first write strategy, and recording data on the optical medium according to the second write strategy. The timing modifications can be determined based on the measured edge timings, edge timing targets for desired edge timings and edge timing sensitivities to the timing modifications.
Claims17
A method to optimize optical recording, comprising:
- recording a pre-defined pattern on an optical medium according to a first write strategy;
- measuring edge timings corresponding to the pre-defined pattern recorded on the optical medium;
- determining a second write strategy including at least timing modifications to the first write strategy, the timing modifications being based on the measured edge timings, edge timing targets for desired edge timings and edge timing sensitivities to the timing modifications;
- recording user data on the optical medium according to the second write strategy;
- and
- determining a power modification based on an average of the measured edge timings, wherein the second write strategy includes the power modification to the first write strategy.
An optical drive, comprising:
- a recording unit configured to drive a laser unit to record patterns on an optical medium according to a write strategy;
- a reading unit configured to generate reading signals corresponding to recorded patterns on the optical medium;
- and
- a controller configured to provide the recording unit with a first write strategy for the recording unit to record a pre-defined pattern on the optical medium, measure edge timings corresponding to the recorded pre-defined pattern from signals generated by the reading unit, determine a second write strategy including at least timing modifications to the first write strategy, and provide the second write strategy to the recording unit for recording user data, wherein the timing modifications are based on the measured edge timings, edge timing targets and edge timing sensitivities to the timing modifications, the controller further configured to determine a power modification based on an average of the measured edge timings, and the second write strategy includes the power modification to the first write strategy.
A method to optimize optical recording, comprising:
- recording a pre-defined pattern on an optical medium according to a first write strategy;
- measuring edge timings corresponding to the pre-defined pattern recorded on the optical medium;
- determining a second write strategy including at least timing modifications to the first write strategy, the timing modifications being based on the measured edge timings, edge timing targets for desired edge timings and edge timing sensitivities to the timing modifications;
- and
- recording user data on the optical medium according to the second write strategy,
- wherein the edge timing sensitivities are defined by degrees of a timing change of an edge caused by a transition from a pair of space and mark of the pre-defined pattern to another pair of space and mark of the pre-defined pattern.
Dependencies are inferred from the claim text.