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1. 发明申请

WO2005006327A1 METHOD AND DEVICE FOR DETERMINING WRITE PARAMETERS FOR RECORDING INFORMATION ON A RECORD CARRIER 审中-公开
标题翻译：用于确定记录载体上记录信息的写参数的方法和装置
公开(公告)号：WO2005006327A1
公开(公告)日：2005-01-20
申请号：PCT/IB2004/051067
申请日：2004-06-30
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , COENE, Willem, M., J., M. , BERGMANS, Johannes, W., M. , IMMINK, Albert, H., J. , BUSCH, Christopher , VAN DER LEE, Alexander, M. , HEKSTRA, Andries, P. , SPRUIJT, Aloysius, M. J., M. , DE RUIJTER, Johannes, M.
发明人： COENE, Willem, M., J., M. , BERGMANS, Johannes, W., M. , IMMINK, Albert, H., J. , BUSCH, Christopher , VAN DER LEE, Alexander, M. , HEKSTRA, Andries, P. , SPRUIJT, Aloysius, M. J., M. , DE RUIJTER, Johannes, M.
IPC分类号： G11B20/10
CPC分类号： G11B20/1217 , G11B7/14 , G11B20/10009 , G11B2020/1249 , G11B2020/1288 , G11B2220/2541
摘要： The present invention relates to a method of determining write parameters for recording information on a record carrier, said information being in the form of a multidimensional channel data stream to be recorded as a channel band of at least two symbol rows one-dimensionally evolving along a first direction and aligned with each other along a second direction. In particular in the case of a read-only optical record carrier (ROM), for determining pit-hole sizes as the write parameters of pit-bits to be mastered on a ROM disc, the write parameters for recording a pit-symbol of a symbol unit of said channel data stream, a symbol unit comprising a central symbol and a number of neighbouring symbols of which some are located on the same symbol row as the central symbol and others are located on neighbouring symbol rows, are determined under joint consideration of The present invention relates to a method of determining write parameters for recording information on a record carrier, said information being in the form of a multidimensional channel data stream to be recorded as a channel band of at least two symbol rows one-dimensionally evolving along a first direction and aligned with each other along a second direction. In particular in the case of a read-only optical record carrier (ROM), for determining pit-hole sizes as the write parameters of pit-bits to be mastered on a ROM disc, the write parameters for recording a pit-symbol of a symbol unit of said channel data stream, a symbol unit comprising a central symbol and a number of neighbouring symbols of which some are located on the same symbol row as the central symbol and others are located on neighbouring symbol rows, are determined under joint consideration of (ii) the symbol values of the neighbouring symbols of the symbol unit located in the same symbol row as the central symbol of the symbol unit; and (iii) the symbol values of neighbouring symbols of the symbol unit located in the symbol rows that are neighbouring the symbol row of the central symbol of the symbol unit. Further, an iterative procedure for determining the write parameters is proposed.
摘要翻译：本发明涉及一种确定用于在记录载体上记录信息的写入参数的方法，所述信息是多维通道数据流的形式，以被记录为沿着一维地演化的至少两个符号行的通道带第一方向并且沿着第二方向彼此对准。特别是在只读光学记录载体（ROM）的情况下，为了将凹坑大小确定为要在ROM盘上掌握的凹坑位的写入参数，写入参数用于记录一个凹坑符号所述信道数据流的符号单元，包括中心符号和多个相邻符号的符号单元，其中一些位于与中心符号相同的符号行上，并且其他位于相邻符号行上的相邻符号在联合考虑本发明涉及一种确定用于在记录载体上记录信息的写入参数的方法，所述信息是多维通道数据流的形式，以被记录为沿着一维地演化的至少两个符号行的通道带第一方向并且沿着第二方向彼此对准。特别是在只读光学记录载体（ROM）的情况下，为了将凹坑大小确定为要在ROM盘上掌握的凹坑位的写入参数，写入参数用于记录一个凹坑符号所述信道数据流的符号单元，包括中心符号和多个相邻符号的符号单元，其中一些位于与中心符号相同的符号行上，并且其他位于相邻符号行上的相邻符号在联合考虑（ii）位于与符号单元的中心符号相同的符号行中的符号单元的相邻符号的符号值; 和（iii）位于与符号单元的中心符号的符号行相邻的符号行中的符号单元的相邻符号的符号值。此外，提出了用于确定写入参数的迭代过程。

2. 发明申请

WO2005006328A1 METHOD AND DEVICE FOR DETERMINING WRITE PARAMETERS FOR RECORDING INFORMATION ON AN OPTICAL RECORD CARRIER 审中-公开
标题翻译：用于确定记录信息在光记录载体上的写参数的方法和装置
公开(公告)号：WO2005006328A1
公开(公告)日：2005-01-20
申请号：PCT/IB2004/051185
申请日：2004-07-09
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , COENE, Willem, M., J., M. , BERGMANS, Johannes, W., M. , IMMINK, Albert, H., J. , BUSCH, Christopher , VAN DER LEE, Alexander, M. , HEKSTRA, Andries, P. , SPRUIJT, Sloysius, M., J., M. , DE RUIJTER, Johannes, M.
发明人： COENE, Willem, M., J., M. , BERGMANS, Johannes, W., M. , IMMINK, Albert, H., J. , BUSCH, Christopher , VAN DER LEE, Alexander, M. , HEKSTRA, Andries, P. , SPRUIJT, Sloysius, M., J., M. , DE RUIJTER, Johannes, M.
IPC分类号： G11B20/10
CPC分类号： G11B20/1217 , G11B7/14 , G11B20/10009 , G11B2020/1249 , G11B2020/1288 , G11B2220/2541
摘要： The present invention relates to a method of determining write parameters for recording information on an optical record carrier, said information being in the form of a channel data stream to be recorded as a channel band of at least one symbol row onedimensionally evolving along a first direction, wherein the write parameters are determined by an iterative procedure. In particular for determining pit-hole sizes as the write parameters of pit-bits to be mastered on a ROM disc the proposed method comprises the steps of: setting the write parameters for recording pit-symbols of said channel data stream to preliminary parameter values, updating the preliminary parameter values by searching for the updated parameter values that best fulfil a predetermined criterion for the write parameters for recording of pit-symbols, said criterion being determined by the difference of HF-signal values, which will be determined by use of a channel model or obtained during read-out of pit-symbols recorded by use of the updated parameter values, and reference HF-signal values, - iterating said updating until a predetermined condition is fulfilled. Thus, a pre-compensation of non-linearities of the read-channel at the side of the write-channel can be obtained without the need to use a large write-strategy matrix or table containing a large number of write parameters.
摘要翻译：本发明涉及一种确定用于在光学记录载体上记录信息的写入参数的方法，所述信息是要被记录为沿着第一方向进行随机演化的至少一个符号行的信道频带的信道数据流的形式，其中写入参数由迭代过程确定。特别是为了将凹坑大小确定为要在ROM盘上掌握的凹坑位的写入参数，所提出的方法包括以下步骤：将用于将所述通道数据流的凹坑符号记录为初始参数值的写入参数，通过搜索最佳地满足用于记录凹坑符号的写入参数的预定标准的更新参数值来更新初始参数值，所述标准由HF信号值的差确定，这将通过使用通道模型或通过使用更新的参数值读取凹坑符号时获得的参考HF信号值， - 迭代所述更新直到满足预定条件。因此，可以在不需要使用包含大量写入参数的大型写入策略矩阵或表的情况下获得在读取通道一侧的读取通道的非线性的预补偿。

3. 发明申请

WO2004032334A1 BIT DETECTION METHOD AND DEVICE 审中-公开
标题翻译：位检测方法和装置
公开(公告)号：WO2004032334A1
公开(公告)日：2004-04-15
申请号：PCT/IB2003/004148
申请日：2003-09-17
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , COENE, Willem, M., J., M. , IMMINK, Albert, H., J. , BERGMANS, Johannes, W., M.
发明人： COENE, Willem, M., J., M. , IMMINK, Albert, H., J. , BERGMANS, Johannes, W., M.
IPC分类号： H03M5/14
CPC分类号： G11B20/1217 , G11B20/10009 , G11B20/1426 , G11B2020/1249 , G11B2020/1288 , G11B2220/2541 , H03M5/145
摘要： The present invention relates to a bit detection method for detecting the bit values of bits of a channel data stream stored on a record carrier, wherein the channel data stream resides on an N-dimensional lattice of bits and comprises a plurality of contiguous bit units, each bit unit comprising at least one bit, wherein bit detection for the channel data stream is performed by an iterative procedure, each iteration being carried out on the basis of said bit units, wherein the bit values of the bits of a bit unit are detected by said iterative procedure based on the received HF signal values of the bits of said bit unit. The proposed method comprises an initialisation step, an updating step and an iteration such the method the bits are detected in an iterative but non-recursive way which allow for a high level of parallel processing in the implementation. In the proposed bit detection method, an evaluation criterion is used which is based on the difference between the received HF-signal and a reference HF-signal for each bit of a bit unit consisting of a plurality of bits, where the reference HF-signal depends on the bit value of the bit to be updated, and on its neighbouring bits, for which bit decisions in a previous iteration step are used. Thus, a high capacity, in particular in two-dimensional optical storage, can be achieved which substantially improves the performance of a threshold detector. Hence, the bit detection method according to the invention does not prohibit implementations aimed for high data-rates.
摘要翻译：本发明涉及一种用于检测存储在记录载体上的信道数据流的比特值的比特检测方法，其中信道数据流驻留在比特的N维网格上，并且包括多个连续比特单元，每个比特单元包括至少一个比特，其中通过迭代过程执行所述信道数据流的比特检测，每个迭代是基于所述比特单元执行的，其中检测比特单元的比特的比特值通过所述迭代过程，基于所接收的所述比特单元的比特的HF信号值。所提出的方法包括初始化步骤，更新步骤和迭代，使得该方法以迭代但非递归方式检测比特，这允许在实现中进行高水平的并行处理。在提出的比特检测方法中，使用基于由多个比特组成的比特单元的每个比特的接收HF信号和参考HF信号之间的差异的评估标准，其中参考HF信号取决于要更新的位的位值，以及在其相邻位中使用先前迭代步骤中哪个位决定。因此，可以实现高容量，特别是二维光学存储，这大大提高了阈值检测器的性能。因此，根据本发明的比特检测方法不禁止针对高数据速率的实现。

4. 发明申请

WO2004029956A1 VITERBI BIT DETECTION METHOD AND DEVICE 审中-公开
标题翻译： VITERBI位检测方法和设备
公开(公告)号：WO2004029956A1
公开(公告)日：2004-04-08
申请号：PCT/IB2003/003733
申请日：2003-08-13
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , COENE, Willem, M., J., M. , IMMINK, Albert, H., J. , BERGMANS, Johannes, W., M.
发明人： COENE, Willem, M., J., M. , IMMINK, Albert, H., J. , BERGMANS, Johannes, W., M.
IPC分类号： G11B20/10
CPC分类号： G11B20/1217 , G11B20/10009 , G11B20/10296 , G11B20/22 , G11B2020/1249 , G11B2020/1288 , G11B2220/2541
摘要： The present invention relates to a Viterbi bit detection method for detecting the bit values of bits of a channel data stream stored on a record carrier along an N-dimensional channel tube, N being at least two, of at least two bit rows one-dimensionally evolving along a first direction and being aligned with each other along at least a second of N-1 other directions, said first direction together with said N-1 other directions constituting an N-dimensional lattice of bit positions, comprising application of a row-based one-dimensional Viterbi bit detection method independent for each of the bit rows of said channel tube. To achieve a reliable bit detection a number of independent one-dimensional row-based Viterbi bit detectors, also known as sequence detectors, is used, one for each bit row in the channel tube : the interference between successive neighbouring bit rows is taken into account via the computation of the branch metrics (for the considered bit row), in which local bit decisions on the primary neighbouring bits in the neighbouring rows are used.
摘要翻译：维特比比特检测方法本发明涉及一种维特比比特检测方法，用于检测沿着N维信道管存储在记录载体上的信道数据流的比特值，N是至少两个位于一维的至少两个比特行沿着第一方向演化并且沿着N-1个其他方向中的至少一个第二方向彼此对准，所述第一方向与构成比特位置的N维格子的所述N-1个其他方向一起，包括应用行 - 基于一维维特比比特检测方法，独立于所述通道管的每个比特行。为了实现可靠的位检测，使用了许多独立的一维行维特比比特检测器（也称为序列检测器），一个用于信道管中的每个比特行：相继的相邻比特行之间的干扰被考虑通过计算分支度量（对于考虑的比特行），其中使用相邻行中的主相邻比特的本地比特决定。

5. 发明申请

WO2004100150A2 ITERATIVE STRIPEWISE TRELLIS-BASED SYMBOL DETECTION METHOD AND DEVICE FOR MULTI-DIMENSIONAL RECORDING SYSTEMS 审中-公开
标题翻译：用于多维记录系统的基于特征的基于条纹的符号检测方法和装置
公开(公告)号：WO2004100150A2
公开(公告)日：2004-11-18
申请号：PCT/IB2004/050633
申请日：2004-05-11
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HEKSTRA, Andries, P. , COENE, Willem, M., J., M. , IMMINK, Albert, H., J.
发明人： HEKSTRA, Andries, P. , COENE, Willem, M., J., M. , IMMINK, Albert, H., J.
IPC分类号： G11B20/00
CPC分类号： G11B20/1217 , G11B20/10009 , G11B20/10287 , G11B2020/1249 , G11B2020/1288 , G11B2220/2541
摘要： When processing a two dimensional data area it is known to be advantageous to divide the two dimensional are into stripes and process each stripe using a stripe-wise detector. The stripe being processed shifts row per row downwards. Each stripe has as its output the bit-decisions of the top bit-row of the stripe which is the most reliable. That output bit-row is also used as side-information for the bit detection of the next stripe which is the stripe which is shifted one bit-row downwards. The bit-row just across the bottom of the stripe on the other hand still needs to be determined in the current iteration, so only the initialisation bit-values can be used in the first iteration of the stripe-wise bit-detector. In order to prevent the propagation of errors towards the top bit row of the stripe the relative weight for the bottom branch bit in the figure-of-merit is reduced from the full 100% to a lower fraction.
摘要翻译：当处理二维数据区域时，已知有利的是将二维划分成条纹并使用条带式检测器处理每个条带。正在处理的条带将每行的行向下移动。每个条带作为其输出的最可靠的条纹的顶部位行的位决定。该输出位行还用作下一个条带的位检测的侧信息，该条带是向下移位一个位行的条带。另一方面，恰好跨条纹底部的位行仍然需要在当前迭代中确定，因此只有初始化位值可以在分段位检测器的第一次迭代中使用。为了防止错误向条纹的顶部位行的传播，使得品质因数中的底部分支位的相对权重从全部100％降低到较低的分数。

6. 发明申请

WO2005043518A1 RECORDING APPARATUS AND METHOD FOR RECORDING INFORMATION ON A RECORD CARRIER IN THE FORM OF CONTIGUOUS PIT-MARKS 审中-公开
标题翻译：用于记录连续标记形式的记录载体信息的记录装置和方法
公开(公告)号：WO2005043518A1
公开(公告)日：2005-05-12
申请号：PCT/IB2004/052147
申请日：2004-10-20
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , IMMINK, Albert, H., J. , VAN DER LEE, Alexander, M. , BRULS, Dominique, M. , COENE, Willem, M., J., M.
发明人： IMMINK, Albert, H., J. , VAN DER LEE, Alexander, M. , BRULS, Dominique, M. , COENE, Willem, M., J., M.
IPC分类号： G11B7/013
CPC分类号： G11B7/24085 , G11B7/00454 , G11B7/14 , G11B7/24088
摘要： A recording apparatus for recording channel symbols of a channel data stream on a record carrier (50), said apparatus being adapted for recording said channel symbols as a channel band (cb) of at least two symbol rows (sr) one-dimensionally evolving along a first direction (t) and aligned with each other along a second direction (r), said two directions constituting a two-dimensional lattice of symbol cells (sc) each being associated with a symbol area (sa) of the record carrier (50). To reduce the occurrence of leading and trailing edges of pit-marks in the recorded channel band, and in order to be able to write a small radial extent in said second direction in view of limiting cross-write effects, it is proposed to record a channel symbols in the form of a mark area (rpm) having a longitudial shape of a length in said first direction (1) substantially equal to the length of a symbol area (sa) in said first direction (t) and of a width in said second direction (r) being smaller than the width of a symbol area (sa) in said second direction (sa).
摘要翻译：一种记录装置，用于在记录载体（50）上记录信道数据流的信道符号，所述装置适用于将所述信道符号记录为沿着一维演化的至少两个符号行（sr）的信道带（cb）第一方向（t）并且沿着第二方向（r）彼此对准，所述两个方向构成符号单元（sc）的二维网格，每个符号单元（sc）与记录载体（50）的符号区域（sa）相关联）。为了减少记录的频道频带中的凹坑的前缘和后沿的发生，并且为了能够在限制交叉写入效应的情况下能够在所述第二方向上写入小的径向范围，建议记录具有在所述第一方向（1）上的长度的纵向形状的标记区域（rpm）的形式的通道符号基本上等于所述第一方向（t）上的符号区域（sa）的长度，并且宽度在所述第二方向（r）小于所述第二方向（sa）上的符号区域（sa）的宽度。

7. 发明申请

WO2005074176A3 FEEDBACK CONTROL LOOP FOR BIT DETECTION IN AN N-DIMENSIONAL DATA BLOCK 审中-公开
公开(公告)号：WO2005074176A3
公开(公告)日：2005-08-11
申请号：PCT/IB2005/050263
申请日：2005-01-24
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , BERGMANS, Johannes W., M. , IMMINK, Albert, H., J. , RIANI, Jamal , COENE, Willem, M., J., M. , VAN BENEDEN, Steven, J-M., L. , CIACCI, Massimo , NOWBAKHT, IRANI, Ali
发明人： BERGMANS, Johannes W., M. , IMMINK, Albert, H., J. , RIANI, Jamal , COENE, Willem, M., J., M. , VAN BENEDEN, Steven, J-M., L. , CIACCI, Massimo , NOWBAKHT, IRANI, Ali
IPC分类号： G11B20/10 , G11B20/18
摘要： On existing DVD and CD players a control loop is required for the adaptation and timing recovery. For Two-Dimensional Optical Storage such a control loop has drawbacks because PRML detection in the form of a stripe-wise Viterbi detector is used. Such a detector introduces an increasing detection delay when going from the outer rows towards the center of the broad spiral. A feedback loop is arranged to determine an error signal from a first area of the data block where the first area is that area where the error signal can be determined within the shortest period of time. This reduces the duration of the detection step and thus increases the stability of the control loop.

8. 发明申请

WO2004100151A3 ITERATIVE STRIPWISE TRELLIS-BASED SYMBOL DETECTION METHOD AND DEVICE FOR MULTI-DIMENSIONAL RECORDING SYSTEMS 审中-公开
公开(公告)号：WO2004100151A3
公开(公告)日：2004-11-18
申请号：PCT/IB2004/050635
申请日：2004-05-11
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , COENE, Willem, M., J., M. , HEKSTRA, Andries, P. , IMMINK, Albert, H., J.
发明人： COENE, Willem, M., J., M. , HEKSTRA, Andries, P. , IMMINK, Albert, H., J.
IPC分类号： G11B20/10
摘要： When processing a two dimensional data area it is known to be advantageous to divide the two dimensional are into stripes and process each stripe using a stripe-wise detector. When processing a data area delimited by more than one guard band it is advantageous to start a subset of bit detectors from each guard band in order to propagate the improved reliability of the side information obtained from the guard band through the subset of detectors. Because the subsets can start processing at the same time the overall detection delay is reduced.

9. 发明申请

WO2005104120A2 DEVICE AND METHOD FOR ENCODING A SECONDARY INFORMATION OF A SECONDARY CHANNEL INTO A CHANNEL DATA STREAM OF A PRIMARY CHANNEL 审中-公开
标题翻译：将二次通道的二次信息编码到主通道的通道数据流中的装置和方法
公开(公告)号：WO2005104120A2
公开(公告)日：2005-11-03
申请号：PCT/IB2005/051270
申请日：2005-04-19
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , COENE, Willem, M., J., M. , IMMINK, Albert, H., J.
发明人： COENE, Willem, M., J., M. , IMMINK, Albert, H., J.
IPC分类号： G11B20/00
CPC分类号： G11B20/00086 , G11B2020/1249
摘要： The present invention relates to a device in a corresponding method for encoding a secondary information (r) of a secondary channel into a channel data stream (3) of a primary channel, said channel data stream (3) comprising at least two symbol rows of channel symbols one-dimensionally evolving along a first direction (t) and aligned with each other along a second direction (r), said two directions constituting a two-dimensional lattice of symbol positions. To provide a device and a method for encoding which can be used in a two-dimensional storage system, it is proposed that the device comprises: - a primary encoder (11) for encoding a primary information (1) into said primary channel data stream (3) of said primary channel, - a secondary encoder (12) for encoding said secondary information (2) into a secondary channel data stream (6) for embedding into the recorded signal of said primary channel data stream (3) and - a parameter modulation means (13) for varying a recording parameter (7) for one or more symbol rows based on said secondary information around an average value (9) using a variation parameter (5), said recording parameter (7) being used for recording said primary channel data stream (3) on a record carrier (21), said variations being made such that said average value (9) remains substantially constant and that said modulations can be detected by a decoding device, said secondary information being encoded into said variations.
摘要翻译：本发明涉及一种用于将辅助信道的辅助信息（r）编码为主信道的信道数据流（3）的对应方法的装置，所述信道数据流（3）包括至少两个符号行通道符号沿着第一方向（t）一维地演变并且沿着第二方向（r）彼此对准，所述两个方向构成符号位置的二维网格。为了提供可以在二维存储系统中使用的编码装置和方法，提出该装置包括： - 主编码器（11），用于将主信息（1）编码成所述主信道数据流（3）， - 辅助编码器（12），用于将所述辅助信息（2）编码为辅助信道数据流（6），用于嵌入到所述主信道数据流（3）的记录信号中， - 参数调制装置（13），用于使用变化参数（5）基于围绕平均值（9）的所述辅助信息来改变用于一个或多个符号行的记录参数（7），所述记录参数（7）用于记录所述主信道数据流（3）在记录载体（21）上，所述变化使得所述平均值（9）保持基本上恒定，并且所述调制可由解码装置检测，所述次信息被编码到所述变异秒。

10. 发明申请

WO2004053866A1 BIT DETECTOR HAVING PARTITIONED PHOTO DETECTOR 审中-公开
标题翻译：具有分辨率检测器的位检测器
公开(公告)号：WO2004053866A1
公开(公告)日：2004-06-24
申请号：PCT/IB2003/005369
申请日：2003-11-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , COENE, Willem, M., J., M. , IMMINK, Albert, H., J. , HENDRIKS, Bernardus, H., W. , SPRUIJT, Aloysius, M., J., M. , BOLTE, Markus, A., B., W.
发明人： COENE, Willem, M., J., M. , IMMINK, Albert, H., J. , HENDRIKS, Bernardus, H., W. , SPRUIJT, Aloysius, M., J., M. , BOLTE, Markus, A., B., W.
IPC分类号： G11B20/00
CPC分类号： G11B20/1217 , G11B7/133 , G11B7/24085 , G11B20/00 , G11B20/10009 , G11B2020/1249 , G11B2020/1288 , G11B2220/2541
摘要： The present invention relates to a bit detector for detecting the bit values of bits of a channel data stream stored on a record carrier, wherein the channel data stream comprises a channel strip of at least two bit rows one-dimensionally evolving along a first direction and aligned with each other along a second direction, said two directions constituting a two-dimensional lattice of bit positions. To improve the bit detection performance for 2D storage considerably a bit detector is proposed that comprises:- a photo detector for detecting light reflected from or transmitted through said record carrier in response to one or more incident light beams, each light beam being directed onto a position along said second direction, said photo detector being partitioned into at least two detector partitions for detecting part of the reflected or transmitted light and for generating partial HF signal values, and - a signal processing means for determining the bit values of the bits of said channel data stream from said partial HF signal values.
摘要翻译：本发明涉及一种用于检测存储在记录载体上的信道数据流的位的位值的位检测器，其中信道数据流包括沿着第一方向一维演化的至少两个位行的通道条，以及沿着第二方向彼此对准，所述两个方向构成位位置的二维网格。为了提高2D存储的位检测性能，提出了一种检测器，其包括： - 光电检测器，用于响应于一个或多个入射光束检测从所述记录载体反射或透射的光，每个光束被引导到所述光检测器被划分为至少两个用于检测部分反射或透射光并用于产生部分HF信号值的检测器分区，以及 - 信号处理装置，用于确定所述第二方向的位的位值来自所述部分HF信号值的信道数据流。

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