Patent ID: 7719944
Filing Date: 2010-05-18
Classification: G11B

Abstract:
1. A method for recording information on an optical recording medium in which irradiating a laser beam, modulated into one or a plurality of write pulses with one or a plurality of write powers in accordance with target data to be written, onto a recording layer of the optical recording medium forms a record mark, the method comprising: modifying a target write pulse form corresponding to the target data with reference to a sum total Σf(a i, p, and q are distance indexes in a unit of channel bit which become smaller with getting near to the target data, a is a binary value except for zero of each channel bit, b is a weight index assigned to each channel bit, f is a bivariate function with variables a and b, in a reference data train being at least one of data trains before and after the target data to be written, wherein the length of the reference data train is equal to or more than a channel bit length, and is equal to or less than a diameter of a laser spot on a surface of a recording film.