Owner MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

Inventors SHIHARA, Tetsuya; TAKEUCHI, Tatsuya; FUJIUNE, Kenji

Pub. Number AU-A-2003250542

PCT Number PCT/JP03/09842

PCT Pub. Number WO2004/038710

Priority 2002-308228 23.10.02 JP

Filing date 1 August 2003

Wipo publication date 13 May 2004

G11B 007/09 Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power - with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following

G11B 007/085 Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power - with provision for moving the light beam into, or out of, its operative position