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    • 1. 发明授权
    • Reading device with cross-talk correction of two signal trains
    • 阅读器具有两路信号串的串扰校正功能
    • US5703845A
    • 1997-12-30
    • US559319
    • 1995-11-15
    • Michel AudoinBertrand MoreauJoseph Colineau
    • Michel AudoinBertrand MoreauJoseph Colineau
    • G11B20/10G11B5/49G11B13/04G11B15/12G11B7/00
    • G11B5/4992G11B15/12
    • A reading head has odd and even elemental areas for reading corresponding odd and even information segments that alternate to make up a frame of information on a record medium. The odd elemental areas provide a train of sequential odd information segments, each odd segment having cross-talk associated with the neighboring even segments which are on either side thereof when it is read from the record medium. Similarly, the even elemental areas provide a train of even information segments, each even segment having cross-talk associated with the odd segments which neighbored it on either side when it is read from the record medium. To correct for such cross-talk in both signal trains, both are fed to each of two cross-talk correcting circuits. These circuits derive needed adjacent segment information as to the cross-talk producing adjacent segments from one of the trains being fed thereto so as to process the segments of the other train being fed thereto for cross-talk correction.
    • 读头具有用于读取对应的奇数和偶数信息段的奇数和偶数元素区域,以替代以构成记录介质上的信息帧。 奇元素区域提供一系列连续的奇数信息段,当从记录介质读取时,每个奇数段具有与相邻偶数段相关联的串扰,这些相邻偶数段在其任一侧。 类似地,偶数元素区域提供一系列均匀的信息段,每个偶数段具有与从记录介质读取时在任一侧相邻的奇数段相关联的串扰。 为了纠正这两个信号串中的这种串扰,两个馈送到两个串扰校正电路中的每一个。 这些电路得到所需的相邻段信息,以便从馈送到其中的列车之一产生相邻段的串扰,以便处理馈送到其中的其它列的段以用于串扰校正。
    • 5. 发明授权
    • Process for reading information
    • 读取信息的过程
    • US5963525A
    • 1999-10-05
    • US750798
    • 1996-12-20
    • Michel AudoinCharaf HannaJoseph ColineauMario De Vito
    • Michel AudoinCharaf HannaJoseph ColineauMario De Vito
    • G11B20/14G11B5/49G11B7/00G11B7/005G11B11/10G11B11/105G11B20/10G11B20/20
    • G11B11/10515G11B11/10547G11B20/10527G11B5/4969G11B20/20
    • A process for reading binary information written on a carrier. The carrier has at least one track and the binary information is written onto the carrier at a frequency Fbit. The process includes the step of reading binary information at the sampling frequency F.sub.e to form a succession of successive read samples SAM(k) of the same track. SAM(k) is the read sample of order k, each read sample having a phase .phi.(k) lying between 0 and 2.pi.. The method further includes a step of interpolating to make it possible to calculate an interpolated sample I(k) with phase equal to .pi. which corresponds to read sample SAM(k) on the basis of the read sample and on the i+j read samples which bracket the original read sample SAM(k) such that:I(k)=a.sub.k-i SAM(k-i)+ . . . +a.sub.k SAM(k)+ . . . +a.sub.k+j SAM(k+j)The coefficients have values which depend on the chosen law of interpolation and a step of validation makes it possible to generate an information item intended to validate or invalidate the interpolated sample. The process is especially useful for the reading of binary information written on a large number of tracks.
    • PCT No.PCT / FR96 / 00601 Sec。 371日期1996年12月20日第 102(e)日期1996年12月20日PCT PCT 1996年4月19日PCT公布。 WO96 / 33490 PCT公开 日期1996年10月24日读取在载体上写入二进制信息的过程。 载波具有至少一个轨道,二进制信息以频率Fbit写入载波。 该处理包括以采样频率Fe读取二进制信息以形成相同轨道的连续读取样本SAM(k)的一系列的步骤。 SAM(k)是阶数k的读取样本,每个读取样本具有位于0和2π之间的相位phi(k)。 该方法还包括一个内插步骤,使得有可能根据读取的样本和i + j个读取样本,计算相位等于对应于读取样本SAM(k)的pi的内插样本I(k) 其包含原始读取样本SAM(k),使得:I(k)= ak-i SAM(ki)+。 。 。 + ak SAM(k)+。 。 。 + ak + j SAM(k + j)系数具有取决于所选择的内插定律的值,并且验证步骤使得可以生成旨在验证或使内插样本无效的信息项。 该过程对于读取写在大量轨道上的二进制信息特别有用。
    • 7. 发明授权
    • Device and system for reading recording media with cross-talk correction
circuitry
    • 用串扰校正电路读取记录媒体的装置和系统
    • US5870361A
    • 1999-02-09
    • US574410
    • 1995-12-15
    • Michel Audoin
    • Michel Audoin
    • G11B20/10G11B5/49G11B11/105G11B7/00
    • G11B11/10547G11B5/4969
    • A device and system for the reading of a recording medium, which enables the reading of high-density information and the removal of disturbance (or cross-talk) from the information. The invention includes chiefly a reading device carrying out the parallel reading of the information from N pixels of an optical detector array and giving at least two sub-trains of samples in series (X, Y, Z), a cross-talk correction circuit for each sub-train of samples, each sub-train giving a train of cross-talk corrected samples (X', Y', Z'), and an input sequencer giving each correction circuit a train of samples to be corrected (Ys) from a first sub-frame of samples (Y) and samples (XN-1, Z0) from at least one second frame of samples (X,Z). This device and system can be applied to the reading of high-density recording media (magnetic or optical).
    • 用于读取记录介质的装置和系统,其能够读取高密度信息和从信息中去除干扰(或串扰)。 本发明主要包括读取装置,其执行从光学检测器阵列的N个像素的信息的并行读取,并给出串联(X,Y,Z)的至少两个子列的样本,串扰校正电路 每个子列的样本,每个子列提供串扰校正样本(X',Y',Z'),以及输入序列器,给每个校正电路提供要校正的样本串(Ys) 来自至少一个第二帧样本(X,Z)的样本(Y)和样本(XN-1,Z0)的第一子帧。 该装置和系统可应用于高密度记录介质(磁或光)的读取。