Owner KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventors STALLINGA, Sjoerd; KUIJPER, Maarten; STEK, Aalbert

Pub. Number AU-A-2003249444

PCT Number PCT/IB03/03363

PCT Pub. Number WO2004/019332

Priority 02292072.2 21.08.02 EP

Filing date 5 August 2003

Wipo publication date 11 March 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

G11B 007/095 Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power - specially adapted for discs, e.g. for compensation of eccentricity or wobble