Information processing apparatus, optical storage apparatus, and method for processing information, and program

A method for processing information executed in an information processing apparatus, the method comprising:

• processing of outputting a signal based on reflected light from a disk with respect to light emitted from a laser diode using a photodetector;
• processing of outputting a reference signal based on the light emitted from the laser diode using a front monitor;
• and
• executing data detection processing by inputting an output signal of the photodetector to a data detection processing unit and generating a reproduction signal using the data detection processing unit, wherein
• in the data detection processing, the data detection processing unit executes:
• processing of generating an equalization signal corresponding to a reproduction signal by an adaptive equalization processing based on the output signal of the photodetector;
• processing of generating an equalization signal corresponding to laser noise by the adaptive equalization processing based on a laser noise signal included in the reference signal output from the front monitor;
• arithmetic operation of the equalization signal corresponding to the reproduction signal and the equalization signal corresponding to the laser noise;
• and
• processing of generating an identifying signal based on the arithmetic operation result.

A program for causing an information processing apparatus to execute information processing, the information processing apparatus comprising:

• a photodetector that outputs a signal based on reflected light from a disk with respect to light emitted from a laser diode;
• a front monitor that outputs a reference signal based on the light emitted from the laser diode;
• and
• a data detection processing unit to which an output signal of the photodetector is input, which generates a reproduction signal and executes data detection processing,
• the program causing the data detection processing unit to execute:
• processing of generating an equalization signal corresponding to a reproduction signal by an adaptive equalization processing based on the output signal of the photodetector;
• processing of generating an equalization signal corresponding to laser noise by the adaptive equalization processing based on a laser noise signal included in the reference signal output from the front monitor;
• arithmetic operation of the equalization signal corresponding to the reproduction signal and the equalization signal corresponding to the laser noise;
• and
• processing of generating an identifying signal based on the arithmetic operation result.