Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1996-02-12
1997-01-28
Hindi, Nabil
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 59, 369 4434, G11B 700
Patent
active
055983960
ABSTRACT:
The optical disk reproducing apparatus of the invention includes: a waveform equalizing section for emphasizing a predetermined range of frequency band of a reproduced signal; a digitizing section for digitizing the reproduced signal which has been emphasized by the wave equalizing section at a predetermined level, so as to convert the emphasized reproduced signal into a digital signal; a period detecting section for detecting and outputting a period of a predetermined pattern included in the digital signal; a phase lock loop section having a free-run period, for controlling the free-run period based on the output of the period detecting section so that the free-run period becomes substantially equal to a period of a clock component of the digital signal, and for outputting a reproduced clock signal by reproducing the clock component of the digital signal; and a synchronizing section for synchronizing the digital signal with the reproduced clock signal so as to output a synchronized signal as reproduced data.
REFERENCES:
patent: 4961182 (1990-10-01), Saito et al.
patent: 5502711 (1996-03-01), Clark et al.
Search Report for EP Application 96102148.2, Mailed May 31, 1996.
Horibe Ryusuke
Imura Masaharu
Shimada Toshiyuki
Hindi Nabil
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Optical disk reproducing apparatus 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 disk reproducing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk reproducing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-945756