Initialization method for phase change type optical disc

Details Initialization method for phase change type optical disc Initialization method for phase change type optical disc

2005-01-18

2005-01-18

Edun, Muhammad (Department: 2655)

Dynamic information storage or retrieval

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

Mechanism control by the control signal

C369S053110, C369S059110, C369S116000

Reexamination Certificate

active

06845070

ABSTRACT:
An initialization method for a phase change type optical disc, including the steps of irradiating a laser beam of a predetermined power onto a specimen optical disc, increasing the power of the laser beam with constant rate, detecting a reflectivity of the laser beam reflected from the optical disc in accordance with the increasing laser power, detecting a saturated value of the reflectivity of the laser beam, detecting an optimal power of the laser beam where the reflectivity belongs 70% to 90% of the saturated value, and performing initialization by irradiating the laser beam having thus obtained optimal power onto the optical disc to be initialized which will be initialized with the adjusted laser beam can improve the recording characteristic and erase ratio.

REFERENCES:
patent: 6134209 (2000-10-01), Den Boef
patent: 6678220 (2004-01-01), Saga

Affiliated with

Also associated with

Rating

Initialization method for phase change type optical disc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Initialization method for phase change type optical disc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Initialization method for phase change type optical disc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3412943