公开(公告)号：DE60010200T2

公开(公告)日：2005-04-21

申请号：DE60010200

申请日：2000-10-25

Applicant: ST MICROELECTRONICS SA

Inventor： LEBOWSKY FRITZ ,  MARREC SONIA

IPC: G11B7/09 ,  G11B20/10 ,  G11B7/00 ,  H04L7/033

Abstract: The incident signal transition detection method has a detection and selection unit (PMC) detecting and selecting the incoming incident sample (HFS). Chains (BLC1-BLC3) of blocks with memory cells (CH10,CH11) each with a time counter (CPT1) are set by a control mechanism (MCT). Each memory cell block is processed (MT) and the time separations stored in the cells (PM).

公开(公告)号：DE60010200D1

公开(公告)日：2004-06-03

申请号：DE60010200

申请日：2000-10-25

Applicant: ST MICROELECTRONICS SA

Inventor： LEBOWSKY FRITZ ,  MARREC SONIA

IPC: G11B7/09 ,  G11B20/10 ,  H03L7/091 ,  H03K5/153 ,  G11B7/007 ,  G01R29/02 ,  G11B7/00 ,  H04L7/033

Abstract: The incident signal transition detection method has a detection and selection unit (PMC) detecting and selecting the incoming incident sample (HFS). Chains (BLC1-BLC3) of blocks with memory cells (CH10,CH11) each with a time counter (CPT1) are set by a control mechanism (MCT). Each memory cell block is processed (MT) and the time separations stored in the cells (PM).

公开(公告)号：FR2796487A1

公开(公告)日：2001-01-19

申请号：FR9908239

申请日：1999-06-28

Applicant: ST MICROELECTRONICS SA

Inventor： MARREC SONIA ,  LEBOWSKY FRITZ

IPC: G11B7/09 ,  G11B7/135

Abstract: Procedure using an optical receiver comprising four photo-detectors for four elementary signals. The signals are split into two secondary pairs of signals sampled and filtered by two low pass filters with a cut-off frequency equal to a quarter of the sampling frequency. The phase difference between the two signals is proportional to the positioning error of the laser beam. Determination of the phase difference involves selection of at least two samples (ECHM, ECHm) above or below a threshold amplitude plus or minus TH about a given level (SE). Hence two transitions (ECH12) of the secondary signals with respect to a threshold corresponding to crossing in the same direction of the threshold can be marked. The time scale between the two transitions can be found which then relates to the distance the laser light beam is from its correct path.

公开(公告)号：FR2792103A1

公开(公告)日：2000-10-13

申请号：FR9903237

申请日：1999-03-16

Applicant: ST MICROELECTRONICS SA

Inventor： LEBOWSKY FRITZ ,  MARREC SONIA

IPC: G11B7/09 ,  G11B7/00 ,  G11B7/135