Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing
Patent
1997-09-22
1998-09-22
Huber, Paul W.
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal gain processing
369 58, G11B 576
Patent
active
058125094
ABSTRACT:
A second generation CD provides improved sound quality over that provided by a first generation CD while remaining compatible with it has a higher sampling rate and has a data format of 1-bit .DELTA..SIGMA. modulation. The higher sampling frequency is an integer multiple of the standard sampling frequency of 44.1 kHz used in the first generation CD to thereby simplify the clock signal generation circuitry. The recording system uses decimation filters to lower the sampling frequency of the 1-bit .DELTA..SIGMA. modulation signal so that the same signal can be used to manufacture both a first generation CD and a second generation CD. The playback apparatus is compatible and the kind of disk is determined based on the table of contents information, so that the appropriate clock signals can be provided to the decoders. In the case of the first generation CD being played back, the data is converted by an oversampling filter and a .DELTA..SIGMA. modulator before being digital to analog converted.
REFERENCES:
patent: 5315571 (1994-05-01), Maeda et al.
Nishio Ayataka
Ogura Yasuhiro
Huber Paul W.
Maioli Jay H.
Sony Corporation
LandOfFree
Recording medium, recording apparatus and 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 Recording medium, recording apparatus and reproducing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording medium, recording apparatus and reproducing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1630068