| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance the recording density of optical information by partially superposing reproducing regions, to simplify a configuration of an optical information processing apparatus by using adjacent reproducing light reproduced in adjacent regions of selected recording regions as servo controlling light and to enhance the storage efficiency of an optical information storage medium by changing the angle deviating from the threshold angle to an angle within a threshold angle range and irradiating the medium with the reference light. <P>SOLUTION: In the optical information processing apparatus, the optical information servo controlling method, the optical information recording method, and the optical information reproducing method, the optical information is subjected to multiplex recording and reproducing at multiplexed angles having different offset angles for every track during recording of the optical information; the multiplexed angles deviating from the threshold angle is changed to the angle within the threshold angle range and the optical information is subjected to the multiplex recording and reproducing and the servo control is performed by using the reproducing light of the different tracks reproduced together. <P>COPYRIGHT: (C)2008,JPO&INPIT |
