Optical disk recording method and apparatus

Abstract

To improve sound quality when music is recorded in a large capacity CD-R disk. Recording strategy for a normal recording mode and recording strategy for a recording mode taking a serious view of a cross talk are provided as recording strategy for an optical disk of the same model number. In the recording strategy for a normal recording mode, pulse width of a recording signal is shortened relatively to the recording strategy for a recording mode taking a serious view of the cross talk, recording power is set to a value in which an appropriate asymmetry value is obtained, recording in which jitter is reduced relatively to the recording strategy for a recording mode taking a serious view of the cross talk is performed. In the recording strategy for a recording mode taking a serious view of the cross talk, a pulse width of a recording signal is lengthened relatively to recording strategy for a normal recording mode, recording power is set to a value in which an appropriate asymmetry value is obtained, recording in which the cross talk is reduced relatively to the recording strategy for a normal recording mode is performed.

Description

technical field [0001] The present invention relates to a CD-R that irradiates a recording laser modulated by a recording signal on an information recording surface, and uses a mark length recording method to alternately form pits and lands to record information. A recording method for recording a recordable optical disc such as a CD) and a recording device capable of recording with improved crosstalk, for example, improving sound quality in music recording. Background technique [0002] As a standard for recordable optical discs, there is a CD-WO (CD Write Once) standard. It is recorded in CD format using CD-R discs. In the CD-WO standard, 3T, 4T, ..., 11T (1T=1 / 4.3218MHz=231ns) are used to record the pit length. If only the laser with the pulse width equivalent to the pit length to be formed is irradiated, due to residual heat, etc. Affected, the length of the actually formed pits will produce errors. This error in the pit length causes jitter in the broadcast signal, w...

AI Technical Summary

Problems solved by technology

However, among some music lovers, there are opinions that the sound quality of the 80-minute CD-R disc with a data capacity of 700MB (hereinafter referred to as "80-minute disc") is poor.

Images