Patent ID: 6480449
Filing Date: 2002-11-12
Classification: G11B

Abstract:
An optical information recording apparatus in which a rewritable optical information recording medium is used and, before recording an information signal on the optical information recording medium, test recording is carried out on the optical information recording medium, the optical information recording apparatus comprising:a test signal generation means that generates a test signal; a recording means that converts the test signal and the information signal to a recording data signal, drives a light source based on the recording data signal, and records the test signal and the information signal on the optical information recording medium; a data pattern generation means that generates a data pattern having substantially no correlation with the test signal; a reproducing means that reproduces signals from the optical information recording medium; and a recording condition determination means that allows the data pattern generation means to supply the data pattern to the recording means to record the data pattern in an area for carrying out the test recording on the optical information recording medium, then allows the test signal generation means to supply the test signal to the recording means to overwrite the test signal in the area, and determines a proper value for edge positions of recording pulses in the recording data signal based on a result obtained by reproducing the test signal from the area by the reproducing means.