Optical data write/reproduce device for determining optimum write strategy and writing data according to optimum writ strategy, and method thereof

A data write method for an optical write and reproduce device emitting a light signal onto an optical disk to write and reproduce data, the method comprising:

• (a) determining a write strategy indicating an emission type of the light signal;
• (b) emitting the light signal onto a test area of the optical disk according to the determined write strategy to write test data;
• (c) reproducing the test data;
• and
• (d) if a reproduction status of the test data does not satisfy a reference condition, changing the write strategy.

A data write method of an optical write and reproduce device emitting a light signal onto an optical disk to write and reproduce data, the method comprising:

• if information on a write strategy indicating an emission type of the light signal is reproduced from the optical disk, writing first test data on the optical disk according to the reproduced write strategy;
• reproducing the first test data written on the optical disk;
• if a reproduction status of the first test data does not satisfy a reference condition, checking a first write strategy corresponding to a type of the optical disk from a memory, wherein the memory stores a write strategy set for each type of optical disk;
• and
• changing the write strategy to the first write strategy.