Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing
Patent
1998-05-18
2000-12-05
Hindi, Nabil
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal gain processing
36912401, H04N 576
Patent
active
061576042
ABSTRACT:
A sampled amplitude read channel for optical disk storage systems is disclosed comprising an all digital timing recovery circuit. The RF read signal from the read head is sampled asynchronous to the baud rate and the asynchronous sample values are interpolated to generate sample values that are substantially synchronous to the baud rate. A data detector, such as a Viterbi sequence detector, processes the synchronous sample values to generate an estimated binary sequence representing the recorded binary sequence. The timing recovery circuit comprises a baud rate estimator for estimating the baud rate relative to the sampling rate, wherein the estimated baud rate is used to initialize a timing recovery loop filter at the end of seek operations. The all digital timing recovery circuit and baud rate estimator enable the storage device to begin reading the user data immediately after a seek operation, rather than wait for the CLV servo loop to acquire the target spindle speed.
REFERENCES:
patent: 5432766 (1995-07-01), Ando et al.
patent: 5521895 (1996-05-01), Miura et al.
patent: 5621710 (1997-04-01), Koo
patent: 5694380 (1997-12-01), Shimizume et al.
patent: 5696639 (1997-12-01), Spurbeck et al.
patent: 5699335 (1997-12-01), Joo et al.
patent: 5701284 (1997-12-01), Lee
patent: 5706265 (1998-01-01), Bang
patent: 5781590 (1998-07-01), Shiokawa et al.
patent: 5790482 (1998-08-01), Saga et al.
patent: 5835295 (1998-11-01), Behrens
patent: 5850377 (1998-12-01), Taguchi et al.
patent: 5872754 (1999-02-01), Taguchi et al.
patent: 5892632 (1999-04-01), Behrens et al.
patent: 5903857 (1999-05-01), Behrens et al.
patent: 6009549 (1999-12-01), Bliss et al.
patent: 6023386 (2000-02-01), Reed et al.
Eduard F. Stikvoort and Jeannet A.C. v. Rens, "An All-Digital Bit Detector for Compact Disc Players", IEEE Journal on Selected Areas in Communications, vol. 10, No. 1, Jan. 1992.
Bliss William G.
Feyh German S.
Graba Jim
Cirrus Logic Inc.
Hindi Nabil
Sheerin Howard H.
Shifrin Dan
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