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公开(公告)号：DE60010015D1
公开(公告)日：2004-05-27
申请号：DE60010015
申请日：2000-10-25
Applicant: ST MICROELECTRONICS SA
Inventor： LEBOWSKY FRITZ , MARREC SONIA , CHELAL RABAH
Abstract: A device is provided for calculating mutual phase shift of first and second incident signals. The device includes a first pair of blocks associated with the first incident signal, a second pair of blocks associated with the second incident signal, checking circuit, and post-processing circuit. Each of the blocks has storage elements for storing a predetermined set of samples of the corresponding incident signal. In the presence of minimum samples or maximum samples of both incident signals, the checking circuit stores a first set of samples relating to the first incident signal in one of the blocks of the first pair and a first set of samples relating to the second incident signal in the counterpart block of the second pair, and then stores the following sets of samples of each incident signal alternately in the two blocks of each pair. The checking circuit delivers a block validation signal when a set of samples has been completely stored in the storage elements of one of the blocks. The post-processing circuit determines the phase shift of the first and second incident signals when two block validation signals are delivered for two counterpart blocks of the two pairs. Also provided is a digital disc reader that includes such a device.
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公开(公告)号：FR2792103B1
公开(公告)日：2001-11-09
申请号：FR9903237
申请日：1999-03-16
Applicant: ST MICROELECTRONICS SA
Inventor： LEBOWSKY FRITZ , MARREC SONIA
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公开(公告)号：FR2801149A1
公开(公告)日：2001-05-18
申请号：FR9913524
申请日：1999-10-28
Applicant: ST MICROELECTRONICS SA
Inventor： LEBOWSKY FRITZ , MARREC SONIA , CHELAL RABAH
IPC: G11B7/09 , G11B20/10 , H03L7/091 , G11B7/0037
Abstract: A device is provided for calculating mutual phase shift of first and second incident signals. The device includes a first pair of blocks associated with the first incident signal, a second pair of blocks associated with the second incident signal, checking circuit, and post-processing circuit. Each of the blocks has storage elements for storing a predetermined set of samples of the corresponding incident signal. In the presence of minimum samples or maximum samples of both incident signals, the checking circuit stores a first set of samples relating to the first incident signal in one of the blocks of the first pair and a first set of samples relating to the second incident signal in the counterpart block of the second pair, and then stores the following sets of samples of each incident signal alternately in the two blocks of each pair. The checking circuit delivers a block validation signal when a set of samples has been completely stored in the storage elements of one of the blocks. The post-processing circuit determines the phase shift of the first and second incident signals when two block validation signals are delivered for two counterpart blocks of the two pairs. Also provided is a digital disc reader that includes such a device.
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公开(公告)号：DE60040121D1
公开(公告)日：2008-10-16
申请号：DE60040121
申请日：2000-05-31
Applicant: ST MICROELECTRONICS SA
Inventor： MARREC SONIA , LEBOWSKY FRITZ
IPC: G11B7/09
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.
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公开(公告)号：DE60010015T2
公开(公告)日：2005-03-31
申请号：DE60010015
申请日：2000-10-25
Applicant: ST MICROELECTRONICS SA
Inventor： LEBOWSKY FRITZ , MARREC SONIA , CHELAL RABAH
Abstract: A device is provided for calculating mutual phase shift of first and second incident signals. The device includes a first pair of blocks associated with the first incident signal, a second pair of blocks associated with the second incident signal, checking circuit, and post-processing circuit. Each of the blocks has storage elements for storing a predetermined set of samples of the corresponding incident signal. In the presence of minimum samples or maximum samples of both incident signals, the checking circuit stores a first set of samples relating to the first incident signal in one of the blocks of the first pair and a first set of samples relating to the second incident signal in the counterpart block of the second pair, and then stores the following sets of samples of each incident signal alternately in the two blocks of each pair. The checking circuit delivers a block validation signal when a set of samples has been completely stored in the storage elements of one of the blocks. The post-processing circuit determines the phase shift of the first and second incident signals when two block validation signals are delivered for two counterpart blocks of the two pairs. Also provided is a digital disc reader that includes such a device.
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Patent Agency Ranking
公开(公告)号：FR2800533B1
公开(公告)日：2002-04-05
申请号：FR9913523
申请日：1999-10-28
Applicant: ST MICROELECTRONICS SA
Inventor： LEBOWSKY FRITZ , MARREC SONIA
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).
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公开(公告)号：FR2801149B1
公开(公告)日：2002-02-01
申请号：FR9913524
申请日：1999-10-28
Applicant: ST MICROELECTRONICS SA
Inventor： LEBOWSKY FRITZ , MARREC SONIA , CHELAL RABAH
IPC: G11B7/09 , G11B20/10 , H03L7/091 , G11B7/0037
Abstract: A device is provided for calculating mutual phase shift of first and second incident signals. The device includes a first pair of blocks associated with the first incident signal, a second pair of blocks associated with the second incident signal, checking circuit, and post-processing circuit. Each of the blocks has storage elements for storing a predetermined set of samples of the corresponding incident signal. In the presence of minimum samples or maximum samples of both incident signals, the checking circuit stores a first set of samples relating to the first incident signal in one of the blocks of the first pair and a first set of samples relating to the second incident signal in the counterpart block of the second pair, and then stores the following sets of samples of each incident signal alternately in the two blocks of each pair. The checking circuit delivers a block validation signal when a set of samples has been completely stored in the storage elements of one of the blocks. The post-processing circuit determines the phase shift of the first and second incident signals when two block validation signals are delivered for two counterpart blocks of the two pairs. Also provided is a digital disc reader that includes such a device.
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公开(公告)号：FR2796487B1
公开(公告)日：2001-10-12
申请号：FR9908239
申请日：1999-06-28
Applicant: ST MICROELECTRONICS SA
Inventor： MARREC SONIA , LEBOWSKY FRITZ
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.
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公开(公告)号：FR2800533A1
公开(公告)日：2001-05-04
申请号：FR9913523
申请日：1999-10-28
Applicant: ST MICROELECTRONICS SA
Inventor： LEBOWSKY FRITZ , MARREC SONIA
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).
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公开(公告)号：DE60043555D1
公开(公告)日：2010-02-04
申请号：DE60043555
申请日：2000-03-10
Applicant: ST MICROELECTRONICS SA
Inventor： LEBOWSKY FRITZ , MARREC SONIA
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