Patent ID: RE41639

Claim:
A writing power control method of an optical disc drive for determining the writing power utilized for writing data onto an optical disc; the writing power control method comprising: (a) constructing a polynomial function which represents a relationship between a writing power and a target read-back signal parameter; (b) retrieving the target read-back signal parameter from the optical disc; (c) determining a first writing power corresponding to the target read-back signal parameter according to the polynomial function; (d) selecting successive blocks from a test area of the optical disc, performing a writing test procedure on the successive blocks utilizing the first writing power then determining a real read-back signal parameter according to an average result of read-back signal parameters obtained from a plurality of blocks of the successive blocks; (e) comparing the real read-back signal parameter with the target read-back signal parameter; and (f) if a difference between the real read-back signal parameter and the target read-back signal parameter is less than a predetermined value, writing data in the optical disc utilizing the first writing power.