Compensation for dust on an optical disk by increasing laser wri

Details Compensation for dust on an optical disk by increasing laser wri Compensation for dust on an optical disk by increasing laser wri

1991-05-06

1993-02-02

Hannaher, Constantine

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 54, G11B 700

Patent

active

051843439

ABSTRACT:
An apparatus and method for compensating for dust particles on the surface of an optical disk during a write operation includes a circuit for sensing the reflected laser light back from the optical storage medium, and a negative peak detection circuit for determining when the reflected laser light drops below the average read power level. The reflected laser power is reduced below the average read level whenever a dust or dirt particle is blocking a portion of the incoming laser light. An additonal circuit means then increases the power of the laser beam by an amount proportional to the detected reduction so that the data can be effectively recorded.

REFERENCES:
patent: 4941139 (1990-07-01), Kulakowski et al.

Affiliated with

Also associated with

Rating

Compensation for dust on an optical disk by increasing laser wri does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compensation for dust on an optical disk by increasing laser wri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compensation for dust on an optical disk by increasing laser wri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-11243