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US 7,480,217 B2Granted
Method and apparatus for adjusting tracking error balance in an optical disk reproducing apparatus
AssigneeLG Electronics Inc.
InventorSeong Hwan Seo
Life of this patent
Estimating the term…
Abstract
A method and apparatus for adjusting tracking error balance in an optical disk reproducing apparatus are provided. The method includes pre-setting a tracking error balance for an optical recording medium and adjusting the tracking error balance during reproduction of data from the optical recording medium.
Claims4
A method of adjusting a tracking error balance, comprising:
- pre-setting a tracking error balance for an optical recording medium;
- and
- adjusting the tracking error balance during reproduction of data from the optical recording medium by:
- determining a first average being an average of focus drive signal values of a previous focus drive signal;
- determining a second average being an average of focus drive signal values of a current focus drive signal;
- and
- adjusting the tracking error balance using the first and second averages by:
- calculating a difference between the first and second averages;
- multiplying the difference by a coefficient;
- and
- adding a result of the multiplying step to a current tracking error balance to produce an updated tracking error balance.
8 more elements
An apparatus for adjusting a tracking error balance, comprising:
- a servo unit configured to control reproduction of data from an optical recording medium;
- a controller configured to pre-set a tracking error balance for the optical recording medium;
- and
- an adjuster configured to adjust the tracking error balance during the reproduction of data from the optical recording medium by:
- determining a first average being an average of focus drive signal values of a previous focus drive signal;
- determining a second average being an average of focus drive signal values of a current focus drive signal;
- and
- adjusting the tracking error balance using the first and second averages by:
- calculating a difference between the first and second averages;
- multiplying the difference by a coefficient;
- and
- adding a result of the multiplying step to a current tracking error balance to produce an updated tracking error balance.
9 more elements
Dependencies are inferred from the claim text.