Device for initializing an optical disc

Details Device for initializing an optical disc Device for initializing an optical disc

1997-04-25

1998-12-22

Hindi, Nabil

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369112, 369 4437, 369 32, G11B 700

Patent

active

058525955

ABSTRACT:
A device capable of initializing an optical disc in high-speed and accurate manner includes a moving table (106) movable in the radius direction of a optical disc (101) to which first and second photo head moving sections (107) and (108) are fixed. A laser beam (131) emitted from a fixed section (105) is branched into two erasing beams through a beam splitter (136) and a reflection mirror (138), and the erasing beams are irradiated on the optical disc (101) from respective objective lenses (142) and (152). The erasing beam are of sizes that can erase a plurality of tracks simultaneously. The moving table (106) advances by a plurality of tracks to thereby initialize the plurality of tracks at once.

REFERENCES:
patent: 5206843 (1993-04-01), Kabburagi
patent: 5319619 (1994-06-01), Shindo et al.

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