公开(公告)号：JP2001148169A

公开(公告)日：2001-05-29

申请号：JP2000298957

申请日：2000-09-29

Applicant: ST MICROELECTRONICS INC

Inventor： OZDEMIR HAKAN ,  REZZI FRANCESCO

IPC: G11B20/14 ,  G11B20/16 ,  H03M13/41 ,  H04L7/04 ,  H04L7/08

Abstract: PROBLEM TO BE SOLVED: To provide an improved circuit and a method for restoring synchronous information from a signal. SOLUTION: This synchronizing circuit has an input terminal, an output terminal, and a restoring circuit coupled to the input terminal and the output terminal. The input terminal receives an input signal having a synchronizing mark. the restoring circuit restores a synchronizing mark from the input signal and can operate, so that a synchronizing signal is generated on the output terminal responding to the restored synchronizing mark.

公开(公告)号：JP2001144622A

公开(公告)日：2001-05-25

申请号：JP2000298174

申请日：2000-09-29

Applicant: ST MICROELECTRONICS INC

Inventor： REZZI FRANCESCO ,  MARROW MARCUS

IPC: G11B20/14 ,  G11B20/18 ,  H03M7/14 ,  H03M13/09

Abstract: PROBLEM TO BE SOLVED: To provide an enhanced technology to encode data stored on a magnetic medium such as a computer disk. SOLUTION: A code word of this invention has data bits of a 1st group and code bits denoting data bits of a 2nd group. The codes of this invention having the code word bike this can be processed at a high efficiency and causes less error propagation, being different from conventional codes.

公开(公告)号：JP2001156653A

公开(公告)日：2001-06-08

申请号：JP2000298432

申请日：2000-09-29

Applicant: ST MICROELECTRONICS INC

Inventor： REZZI FRANCESCO ,  MARROW MARCUS

IPC: G11B20/10 ,  G11B20/18 ,  H03M13/41

Abstract: PROBLEM TO BE SOLVED: To provide an enhanced technology to recover information from a read signal. SOLUTION: The Viterbi detector of this invention receives a signal representing a sequence consisting of a plurality of values. The detector identifies a survivor path from a possible sequence value and periodically eliminates the identified survivor path with a prescribed parity to recover the sequence from the signal. The Viterbi detector as above can accurately recover data from a read signal with a deteriorated SNR by recognizing the parity being part of a data sequence and can increase a storage density of a storage disk of a disk drive.

公开(公告)号：DE60044986D1

公开(公告)日：2010-10-28

申请号：DE60044986

申请日：2000-09-20

Applicant: ST MICROELECTRONICS INC

Inventor： REZZI FRANCESCO ,  MARROW MARCUS

IPC: H03M5/14 ,  G11B20/14 ,  G11B20/18 ,  H03M7/14 ,  H03M13/09

公开(公告)号：DE60035011D1

公开(公告)日：2007-07-12

申请号：DE60035011

申请日：2000-09-20

Applicant: ST MICROELECTRONICS INC

Inventor： REZZI FRANCESCO ,  MARROW MARCUS

IPC: H03M5/14 ,  G11B20/14 ,  G11B20/18 ,  H03M7/14 ,  H03M13/09

Abstract: An encoder for encoding data, the encoder operable to generate a code word comprising: a first group of data bits; code bits that represent a second group of data bits; and a minimum probability of transitions among the code bits.

公开(公告)号：DE60032089D1

公开(公告)日：2007-01-11

申请号：DE60032089

申请日：2000-09-20

Applicant: ST MICROELECTRONICS INC

Inventor： REZZI FRANCESCO ,  OZDEMIR HAKAN

IPC: G11B20/14 ,  H04L7/04 ,  G11B20/16 ,  H03M13/31 ,  H03M13/41 ,  H04L7/08

Abstract: A synchronizer circuit includes a recovery circuit coupled to the input and output terminals. The input signal includes a sync mark, and the recovery circuit is operable to recover the sync mark and generate a synchronization signal on the output terminal. Such a synchronizer circuit can recover the synchronization mark from a read signal and locate the beginning of a data stream for a separate Viterbi detector thereby reducing the complexity and increase the data-recovery speed of the Viterbi detector. The sync mark may be recovered by executing state-transition routines in alignment with the input signal.