Light information recording method and apparatus thereof

Abstract

The invention provides an optical information recording method and apparatus which conducts information recording with constant laser beam emission direction even if the information recording plane of an optical information recording medium is tilted. A tilt of the information recording plane at the pit forming position on an optical disc 10 for the plane where the laser beam emitted from an optical pickup 23 is crossing in orthogonal is detected with a tilt sensor 234 and tilt becomes the pit is formed by setting the higher laser beam intensity, as the larger. When the tilt of the information recording plane becomes large, the amount of irradiation of optical beam per unit area is reduced. However, the reduction in the amount of irradiation of optical beam per unit area generated due to the tilt of the information recording plane can be compensated without compensation in the laser beam emitting direction by setting the laser beam intensity to a higher value, as the tilt becomes larger.

Description

technical field [0001] The present invention relates to an optical information recording method and its apparatus capable of reducing the deterioration of recorded information quality caused by the inclination of an information recording medium. Background technique [0002] Conventionally, a technique for recording a large amount of information on an optical information recording medium, such as an optical disc such as a CD-R, has been used. In recent years, a technique of recording information at a recording speed of 26 times or higher has generally been popularized. [0003] When recording information on an optical disc, the optical pickup irradiates pulsed laser light to the rotating optical disc based on the digitized digital signal of the information to be recorded to form pits. [0004] When using the digital signal that digitizes the information of the recording object to form pits on the optical disc, for example, when the digital signal is at a high level, the int...

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Problems solved by technology

[0008] However, the mechanism for inclining the optical pickup 4 according to the inclination angle θ is often too complicated, resulting in high cost of the device

[0009] Also, as a method for performing proper (proper β) recording without using a tilt correction mechanism, although it is disclosed in "Power Calibration Method for Optical Disk Recording and Reproducing Device" (Japanese Patent Application Laid-Open No. 8-147701), OPC is also performed on the outer periphery. way, but in this case, OPC is too time-consuming

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