Optical disc signal recording method and optical disc apparatus

Details Optical disc signal recording method and optical disc apparatus Optical disc signal recording method and optical disc apparatus

2005-07-25

2009-12-22

Feild, Joseph H (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

C369S047500, C369S059110

Reexamination Certificate

active

07636283

ABSTRACT:
An optical disc signal recording for forming a record mark according to a recording signal on an optical disc by applying a laser beam of a predetermined power level to the optical disc is provided. A recording pulse having a first period having a first level of Po and a width of Wh, a middle period having a second level of Pm lower than the first level Po and a width of Wm, and a last period having a level substantially equal to the first level Po and a width of Wt is generated and used for all record marks regardless of the lengths of the record marks. The record mark is formed using the generated pulse on the optical disc. As a result, setting of a write strategy is facilitated, an adjustment time in variable speed record mode is shortened, and a good recording characteristic is secured.

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