| 摘要 |
A method and apparatus used in compensating for birefringence effects in measuring recording data quality on optical discs, beta , in an optical disc reader/recorder comprising performing a power series of writes on the optical disc within the optical disc reader/recorder, wherein each member of the series has a merit parameter, beta value, identified and placed in a table versus recording parameters; identifying at least one particular track having an ideal merit parameters as compared to a predetermined value; using defocused optics to read the series of writes contained within the at least one particular track to generate a rate of change for beta vs. defocus setting for the particular track; determining a beta compensation value for the rate of change; and applying the beta compensation in conjunction with the table to select appropriate recording parameters.
|
