公开(公告)号：US20040174737A1

公开(公告)日：2004-09-09

申请号：US10729192

申请日：2003-12-05

Applicant: STMicroelectronics S.A.

Inventor： Philippe Graffouliere

IPC: G11C011/00

CPC classification number: G11B27/24 ,  G11B7/007 ,  G11B7/00745 ,  G11B20/10009 ,  G11B20/14 ,  G11B20/1403 ,  G11B20/18 ,  G11B27/3027 ,  G11B2220/218 ,  G11B2220/2545 ,  G11B2220/2562

Abstract: For indicating on a data medium (9) a sector referenced by a binary word (16) formed of a number M of first bytes each comprising a number L of bits, the method includes steps of etching onto the data medium locally at this sector a succession of M second bytes each corresponding to a first byte, each second byte being equal to a vector of N components, each with a value of null1 or null1, such that Nnull2Lnull1 and such that the scalar product of said vector with any other vector to which another second byte is equal, is at most equal to null1. The data medium (9) is, for example, an optical disk.

Abstract translation: 为了在数据介质（9）上指示由二进制字（16）引用的扇区，该二进制字由包括数字L位的M个第一字节组成，该方法包括以下步骤：在该扇区处本地蚀刻到数据介质上 每个对应于第一字节的M个第二字节的连续，每个第二个字节等于N个分量的向量，每个分量的值为+1或-1，使得N = 2L -1，并且使得标量 所述向量与另一个第二字节相等的任何其他向量的乘积最大等于+1。 数据媒体（9）例如是光盘。

公开(公告)号：US20040136295A1

公开(公告)日：2004-07-15

申请号：US10726421

申请日：2003-12-03

Applicant: STMicroelectronics S.A.

Inventor： Philippe Graffouliere

IPC: G11B007/00

CPC classification number: G11B27/24 ,  G11B7/0053 ,  G11B7/00745 ,  G11B20/14 ,  G11B20/18 ,  G11B27/3027 ,  G11B2220/218 ,  G11B2220/2545 ,  G11B2220/2562

Abstract: During manufacturing of optical disks, mastering equipment inserts marks (nullhigh frequency wobble marksnull ornullHFWMsnull) into the wobble of the groove on optical disks to store data. The presence of a HFWM at a zero crossing of the wobble indicates an active bit and the absence of the HFWM indicates an inactive bit. The zero crossing is, for example, a negative zero crossing. A matched filter is used to detect the shape of the HFWMs. If a HFWM is detected during a wobble cycle, an active bit is saved in a register or a memory. If a HFWM is not detected during a wobble cycle, an inactive bit is saved in a register or a memory. The active and inactive bits may be coded bits that must be decoded to data bits. The data bits include information such as a synchronization mark, a sector identification data, and an error detection code.

Abstract translation: 在光盘制造过程中，母盘设备将标记（“高频摇摆标记”或“HFWM”）插入到光盘上凹槽的摆动中以存储数据。 HFWM在摆幅过零点处的存在表示有效位，并且HFWM的不存在表示无效位。 过零点例如是负零交叉。 匹配滤波器用于检测HFWM的形状。 如果在摆动周期期间检测到HFWM，则活动位将保存在寄存器或存储器中。 如果在摆动周期期间未检测到HFWM，则无效位将保存在寄存器或存储器中。 有源和无效位可以是必须被解码为数据位的编码位。 数据位包括诸如同步标记，扇区识别数据和错误检测码之类的信息。

公开(公告)号：US20030123362A1

公开(公告)日：2003-07-03

申请号：US10320757

申请日：2002-12-16

Applicant: STMicroelectronics S.A.

Inventor： Philippe Graffouliere

IPC: G11B007/00

CPC classification number: G11B20/10009 ,  G11B20/1426 ,  G11B20/18

Abstract: A symbol length is evaluated on the basis of receiving a first-symbol length, and a phase error with respect to detection of a length of the first symbol before receiving a length of a second symbol following the first symbol. The process includes evaluating at least two random phase errors on the basis of the phase error received. A first random phase error is dependent on a deterministic phase error with respect to a first state corresponding to an absence of a corrected first-symbol length. A second random phase error is dependent on a deterministic phase error with respect to a second state corresponding to the corrected first-symbol length. The process includes retaining as an evaluated symbol length the first-symbol length received if the absolute value of the first random phase error reduces a condition of passing through the first state. The second step also retains as an evaluated symbol length the corrected first-symbol length if the absolute value of the second random phase error reduces the condition of passing through the second state.

Abstract translation: 基于接收第一符号长度和相对于在接收第一符号之后的第二符号的长度的第一符号的长度的检测的相位误差来评估符号长度。 该过程包括基于接收到的相位误差来评估至少两个随机相位误差。 第一随机相位误差取决于相对于不存在校正的第一符号长度的第一状态的确定性相位误差。 第二随机相位误差取决于对应于校正的第一符号长度的第二状态的确定性相位误差。 该过程包括如果第一随机相位误差的绝对值减少通过第一状态的条件，则保留作为评估符号长度接收的第一符号长度。 如果第二随机相位误差的绝对值降低了通过第二状态的条件，则第二步骤还将经评估的符号长度保留为校正的第一符号长度。