Patent ID: 8077564

Claim:
A method for improving readability of an optical disc, the method comprising: changing a first control parameter of an optical storage apparatus that accesses the optical disc and obtaining a plurality of associated values of an index corresponding to the readability of the optical disc for respective changed/unchanged values of the first control parameter; setting the first control parameter to be an optimal value out of the changed/unchanged values of the first control parameter according to the associated values of the index; changing a second control parameter of the optical storage apparatus with the first control parameter set to be the optimal value and obtaining a plurality of associated values of the index for respective changed/unchanged values of the second control parameter; setting the second control parameter to be an optimal value out of the changed/unchanged values of the second control parameter according to the associated values of the index that are obtained for the respective changed/unchanged values of the second control parameter; and utilizing the first and the second control parameters having their individual optimal values for further control during decoding.