Laser driving apparatus

Details Laser driving apparatus Laser driving apparatus

2007-07-24

2007-07-24

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal processing for controlling recording light...

C369S116000

Reexamination Certificate

active

10108912

ABSTRACT:
A strategy process used for recording data on an optical disk is also used during DC erase is performed. Effects similar to those obtained in the case, in which a high frequency signal is superposed on a laser diode output current during the DC erase, can be obtained by performing the strategy process on the laser diode output current during the DC erase. This eliminates the necessity for generating high-level and high-frequency signals. Consequently, an apparatus can be constructed at low cost.

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Electronic Translation of JP 7-240 026.
Patent Abstract of Japan Yoshida Tomio JP 63-113824 May 1998.
YOSHIKAWA, Office Action, Japanese Patent Office (Japan), pp. all, (Nov. 2, 2004).

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