Dynamic information storage or retrieval – Systems having plural physically distinct independent tracks... – Having layered storage medium
Patent
1997-03-26
1998-01-06
Hindi, Nabil
Dynamic information storage or retrieval
Systems having plural physically distinct independent tracks...
Having layered storage medium
369 32, 3692753, 369 59, G11B 724
Patent
active
057062692
ABSTRACT:
A recording medium which realizes high sound quality and is playable on a conventional playback device has a recording layer provided with a double-layered structure having at least a first layer L1 and a second layer L2, an audio data program is recorded on the first layer in the first data format, which is the conventional format, and the audio data program is recorded on the second layer in a second, new data format. The audio data programs recorded on the first layer and on the second layer are the same program and can be produced using 1-bit .DELTA..SIGMA. modulation having a high sampling rate as the new format, the .DELTA..SIGMA. modulated signal being passed through successive decimation filters to form the lower sampling rate signal of the conventional format. The double-layered disk can be played back using a disk judging unit that detects the disk's table of contents and controls a laser beam focus of a pick up, an operating clock frequency, and the decoder for reading out the data recorded in pits formed on the disk.
REFERENCES:
patent: 5596565 (1997-01-01), Yonemitsu et al.
patent: 5642346 (1997-06-01), Taira et al.
Nishio Ayataka
Ogura Yasuhiro
Hindi Nabil
Maioli Jay H.
Sony Corporation
LandOfFree
Recording medium and recording/reproduction apparatus therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recording medium and recording/reproduction apparatus therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording medium and recording/reproduction apparatus therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2335631