Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing
Patent
1997-08-29
1999-11-16
Edun, Muhammad
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal gain processing
369 4434, 369 4441, G11B 700
Patent
active
059869895
ABSTRACT:
A method is specified for processing the output signals A to F of an optoelectronic scanner (3) in a replay or recording appliance for replaying from or recording onto an optical recording medium having the following method steps: as well as an appliance with a corresponding input circuit of a digital servo controller: first of all, the output signals A to F are supplied directly to an A/D converter (2) without the interposition of a low-pass filter, and are digitized with n-times oversampling. The digitized output signals are then supplied to a k-th order comb filter (4) by means of which undersampling of the signals to the normal sampling frequency (44.1 kHz) is carried out. After this, the undersampled output signals A' to F' of the comb filter (4) are supplied to a trimming and correction circuit (6) in which trimming and correction, of OFFSET and BALANCE are respectively carried out. Finally, the trimmed/corrected output signals A" to F" are supplied to the trimming and correction circuit of a digital servo circuit (1), by means of which a focusing error signal (FE) and a track deviation error signal (TE) are produced.
REFERENCES:
patent: 4933922 (1990-06-01), Yokogawa
patent: 4972398 (1990-11-01), Wachi
patent: 5065386 (1991-11-01), Takeya et al.
patent: 5293369 (1994-03-01), Melas et al.
patent: 5627805 (1997-05-01), Finklestein et al.
patent: 5701283 (1997-12-01), Alon et al.
* Patent Abstracts of Japan, vol. 14, No. 59 (P-1000), Feb. 2, 1990 (Matsushita Electric Ind. Co.).
** Patent Abstracts of Japan, vol. 14, No. 333 (P-1078), Jul. 18, 1990 (Sony Corp.).
S. Matsukawa et al., "An Advanced Sector Servo Using A Learning, Estimating and Over-Sampling Method for a 3.5 28 Mbyte FDD", IEEE Transactions on Magnetics, vol. 27, No. 6, pt. 1, Nov. 1991, pp. 4484-4489.
EPO Search Report dated: Sep. 29, 1998.
Schemmann Heinrich
Takagi Hirohito
Deutsche Thomson-Brandt GmbH
Edun Muhammad
Emanuel Peter M.
Kiel Paul P.
Tripoli Joseph S.
LandOfFree
Method for processing the output signals of an optoelectronic sc does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for processing the output signals of an optoelectronic sc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for processing the output signals of an optoelectronic sc will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1333020