Information recording apparatus and method, a computer program, and recording medium

Information recording apparatus (1) includes a recording means for recording the data pattern in the recording medium (100) (11), and reading means for obtaining a read signal by reading the data pattern (11), the amplitude level of the read signal predetermined acquires the limited signal by limiting by the amplitude limit value, the amplitude limit filtering means for obtaining an equalization correction signal by performing high frequency emphasis filtering process on the amplitude limit signal (15), a measuring means for measuring the jitter of the read signal or the equalized correction signal (19), detecting means for detecting a data pattern of the equalization correction signal (20), with reference to the data pattern, satisfying jitter desired and an adjusting means (21) for adjusting the recording condition such.