Optical recording apparatus

Details Optical recording apparatus Optical recording apparatus

G - Physics

11

B

352/32.2

G11B 7/135 (2006.01) G11B 7/0045 (2006.01) G11B 7/007 (2006.01) G11B 7/08 (2006.01) G11B 7/09 (2006.01) G11B 7/125 (2006.01) G11B 7/13 (2006.01) G11B 11/105 (2006.01) G11B 13/04 (2006.01)

Patent

CA 1277767

ABSTRACT OF THE DISCLOSURE An optical recording apparatus is disclosed which is capable of erasing an already recorded information signal and recording a new signal simultaneously on a record medium. The apparatus includes beam emitting means, such as a laser diode array, having beam emitting points for emitting an erasing beam and a recording beam focused on different tracks of an optical magnetic disk. The erasing beam is focused on a track located ahead of a track on which the recording beam is focused. The reflected beams of the erasing beam and the recording beam are separated respectively into two polarized components by means of a polarized beam splitter and the polarized components are received by photo sensor means. Based on outputs of the photo sensor means, an address signal, a focus error signal and a tracking error signal are obtained. At the time of reproduction, the laser diode array emits a reproducing beam so that the photo sensor means provide a reproduced signal.

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