Patent ID: 7965603

Claim:
A method of adjusting a write strategy of a recordable disc, comprising steps of: generating a test pattern on a power calibrating area of the recordable disc according to a first write strategy and a first write power; establishing a Pit-to-Land Inter-Symbol Interference table and a Land-to-Pit Inter-Symbol Interference table through measuring a plurality of Pits and Lands with different time lengths in the test pattern, wherein the Land-to-Pit Inter-Symbol Interference table at least includes a plural of front-edge errors from a plural of Lands with different time lengths to a Pit with a time length of 3T and the Pit-to-Land Inter-Symbol Interference table at least includes a plural of rear-edge errors from a Pit with a time length of 3T to a plural of Lands with a different time lengths; providing a weight to each front-edge error and each rear-edge error; determining an adjusting ratio of a first overdrive power by multiplying a mapping constant by a summary of all the front-edge errors and the rear-edge errors with the weights; and generating a second overdrive power by adjusting the first overdrive power of the first write strategy according to the adjusting ratio.