Optical disc player capable of reproducing a plurality of differ

Details Optical disc player capable of reproducing a plurality of differ Optical disc player capable of reproducing a plurality of differ

1996-12-13

1999-01-12

Dinh, Tan

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

G11B 390

Patent

active

058598227

ABSTRACT:
In reproducing an optical disc, the disc is reproduced first using a semiconductor laser of 770-800 nm in wavelength for CD, and if a correct data signal is obtained, the optical disc is identified as a CD, while if a correct data signal is not obtained, the optical disc is identified as a high-density optical disc and is reproduced using a semiconductor laser for high-density optical disc. According to this construction there can be provided an optical disc player capable of discriminating between different types of optical discs and reproducing the discs with semiconductor lasers respectively suitable for the discs. Since a CD and a write-once type optical disc compatible with the CD are sure to be reproduced by a semiconductor laser of 770-800 nm for CD, it is impossible that there will occur breakdown of a recording layer of the write-once disc.

REFERENCES:
patent: 5003521 (1991-03-01), Yoshida et al.
patent: 5274622 (1993-12-01), Kono
patent: 5381392 (1995-01-01), Hira
patent: 5465245 (1995-11-01), Yanagawa
patent: 5513164 (1996-04-01), Tanaka et al.
patent: 5684773 (1997-11-01), Hayashi
Hideki Hayashi et al. "Optical Information Recording And Reproducing Device", Sep. 16, 1994.

Affiliated with

Also associated with

Rating

Optical disc player capable of reproducing a plurality of differ does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical disc player capable of reproducing a plurality of differ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc player capable of reproducing a plurality of differ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1522240