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1. 发明授权

US12013754B2 Nonvolatile memory device and memory system including nonvolatile memory device 有权
公开(公告)号：US12013754B2
公开(公告)日：2024-06-18
申请号：US17479067
申请日：2021-09-20
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Beomkyu Shin , Sungkyu Park
IPC分类号： G06F11/10 , G06F3/06 , G11C29/52 , G11B20/18 , G11C7/10 , G11C11/56 , G11C13/00 , G11C16/10 , G11C29/42
CPC分类号： G06F11/1068 , G06F3/0604 , G06F3/0659 , G06F3/0679 , G11C29/52 , G06F3/065 , G11B2020/1823 , G11C7/1006 , G11C11/5628 , G11C13/0069 , G11C16/10 , G11C29/42 , G11C2211/5646 , G11C2211/5647
摘要： A nonvolatile memory device performs a compare and write operation. The compare and write operation includes reading read data from memory cells, inverting first write data to generate second write data, adding a first flag bit to the first write data to generate third write data and adding a second flag bit to the second write data to generate fourth write data, performing a reinforcement operation on each of the third write data and the fourth write data to generate fifth write data and sixth write data, and comparing the read data with each of the fifth write data and the sixth write data and writing one of the fifth and sixth write data in the memory cells based on a result of the comparison.

2. 发明申请

US20190189155A1 DETECTING DAMAGED AREAS ON MAGNETIC TAPE MEDIA USING DIAGNOSTICS LOCATE 审中-公开
公开(公告)号：US20190189155A1
公开(公告)日：2019-06-20
申请号：US16269424
申请日：2019-02-06
申请人： International Business Machines Corporation
发明人： Noriko Yamamoto , Tsuyoshi Miyamura , Hiroshi Itagaki , Tohru Hasegawa , Sosuke Matsui , Shinsuke Mitsuma
IPC分类号： G11B20/18
CPC分类号： G11B20/182 , G11B5/5504 , G11B5/5513 , G11B5/584 , G11B20/1876 , G11B20/1886 , G11B27/36 , G11B2020/1823 , G11B2020/1826
摘要： A computer-implemented method for determining a damaged area of a magnetic tape loaded in a tape drive, according to one embodiment, includes: determining a first error location on a magnetic tape where a first error occurred in response to experiencing the first error. Moreover, the method includes determining one or more areas on the magnetic tape to be examined. The one or more areas are determined using a predetermined algorithm which incorporates the first error location. Independent of a read and/or write operation, relative motion is induced between a tape head and the magnetic tape such that the tape head is positioned adjacent to each of the respective one or more areas in turn. Furthermore, each of the one or more areas having a respective number of measured servo errors which exceeds a threshold value is identified as a damaged area of the magnetic tape.

3. 发明申请

US20180108378A1 OPTICAL DISC DEVICE AND OPTICAL DISC READING METHOD 审中-公开
公开(公告)号：US20180108378A1
公开(公告)日：2018-04-19
申请号：US15718378
申请日：2017-09-28
申请人： Panasonic Intellectual Property Management Co., Ltd.
发明人： Yoshikazu YAMAMOTO , Yoshihisa TAKAHASHI , Atsushi KIYOMURA
IPC分类号： G11B20/18 , G11B20/10
CPC分类号： G11B20/1816 , G11B20/10388 , G11B2020/1823
摘要： An optical disc device includes: an optical disc drive that reads data from a plurality of optical discs in which user data is recorded while distributed in the plurality of optical discs; a memory unit in which data read from an optical disc of a first group that is a part of the plurality of optical discs is recorded through the optical disc drive; and a controller that reproduces the user data from data of a remaining optical disc except for the first group, the data of the remaining optical disc being read through the optical disc drive, and the data recorded in the memory unit.

4. 发明授权

US09837119B2 Identifying a defect in a data-storage medium 有权
公开(公告)号：US09837119B2
公开(公告)日：2017-12-05
申请号：US14949328
申请日：2015-11-23
申请人： STMICROELECTRONICS, INC.
发明人： Shayan Srinivasa Garani , Sivagnanam Parthasarathy
IPC分类号： G11B27/36 , G11B20/18 , G06F11/20 , G11B20/10
CPC分类号： G11B20/1833 , G06F11/2094 , G06F2201/805 , G06F2201/85 , G11B20/10037 , G11B20/10046 , G11B20/10064 , G11B20/10074 , G11B20/10222 , G11B20/10287 , G11B20/10296 , G11B20/10379 , G11B2020/1823 , G11B2020/1826 , G11B2020/185 , G11B2020/1863 , G11B2220/2516
摘要： An embodiment of a data-read path includes a defect detector and a data-recovery circuit. The defect detector is operable to identify a defective region of a data-storage medium, and the data-recovery circuit is operable to recover data from the data-storage medium in response to the defect detector. For example, such an embodiment may allow identifying a defective region of a data-storage disk caused, e.g., by a scratch or contamination, and may allow recovering data that was written to the defective region.

5. 发明授权

US09761272B1 Detecting media defects 有权
公开(公告)号：US09761272B1
公开(公告)日：2017-09-12
申请号：US15290978
申请日：2016-10-11
申请人： International Business Machines Corporation
发明人： Robert G. Biskeborn
IPC分类号： G11B5/09 , G11B20/18 , G11B5/008 , G11B5/31
CPC分类号： G11B20/1816 , G11B5/00813 , G11B5/313 , G11B20/1886 , G11B2020/1823 , G11B2020/1826
摘要： A method according to one embodiment includes instructing a drive to detect a written signal burst on a magnetic tape and stop movement of the tape in response to detecting the written signal burst. A search for a defect is conducted in a location proximate to the written signal burst. An apparatus according to one embodiment includes a plurality of detector structures positioned in an array. Each of the detector structures includes a pair of conductive layers separated by an insulating material. A write transducer is aligned with each of the detector structures. A controller is configured to cause one of the write transducers to write a signal burst in response to the associated detector structure encountering a defect.

6. 发明授权

US08270274B2 Optical disk inspection device and inspection method 失效
标题翻译：光盘检查装置及检查方法
公开(公告)号：US08270274B2
公开(公告)日：2012-09-18
申请号：US12580095
申请日：2009-10-15
申请人： Keishi Ueno
发明人： Keishi Ueno
IPC分类号： G11B20/18
CPC分类号： G11B20/1816 , G11B2020/1823 , G11B2220/2537
摘要： There is provided an optical disk device which quickly inspects the presence or absence of a defect in an optical disk in order to ensure that it can be played back on various types of optical disk devices. A detection unit uses signals supplied from a playback unit to detect defects from each of an RF signal, a focus error signal, and a tracking error signal. A CPU stores positions of the defects in a memory. The playback unit plays back data while degrading playback conditions at the positions of the defects . The detection unit detects an error rate of the played-back data, and finally determines whether the optical disk is “OK” or “NG”.
摘要翻译：提供了一种光盘装置，其可以快速检查光盘中是否存在缺陷，以确保可以在各种类型的光盘装置上重放。检测单元使用从重放单元提供的信号来检测RF信号，聚焦误差信号和跟踪误差信号中的每一个的缺陷。 CPU将缺陷的位置存储在存储器中。播放单元在缺陷的位置降低重放条件的同时回放数据。检测单元检测重放数据的错误率，最后确定光盘是“OK”还是“NG”。

7. 发明授权

US08140891B2 Method of determining defects in information storage medium, recording/reproducing apparatus using the same, and information storage medium 有权
公开(公告)号：US08140891B2
公开(公告)日：2012-03-20
申请号：US12344628
申请日：2008-12-29
申请人： Sung-hee Hwang , Jung-wan Ko , Hyo-lin Sung
发明人： Sung-hee Hwang , Jung-wan Ko , Hyo-lin Sung
IPC分类号： G06F11/00
CPC分类号： G11B20/1883 , G11B20/1879 , G11B2020/1285 , G11B2020/1823 , G11B2020/1893 , G11B2220/20
摘要： A method of determining whether a defect exists on an information storage medium is provided along with a recording/reproducing apparatus using the same. Such a method comprises: seeking a defect entry whose state information indicates that a defect block or a replacement block has been re-initialized without certification from a defect list for managing an information storage medium and including state information of the defect block and state information of the replacement block, wherein the medium includes a spare area for recording the replacement block to replace the defect block occurring in a user data area on the medium; and certifying the defect block or the replacement block registered in the sought defect entry. As a result, defect information can be effectively rearranged for quick re-initialization without certification in order to improve the performance of a drive system.

8. 发明申请

US20120030539A1 ERROR-FLOOR MITIGATION OF CODES USING WRITE VERIFICATION 有权
标题翻译：使用写入验证错误地减少代码
公开(公告)号：US20120030539A1
公开(公告)日：2012-02-02
申请号：US12994288
申请日：2009-04-21
申请人： Nils Graef , Kiran Gunnam
发明人： Nils Graef , Kiran Gunnam
IPC分类号： H03M13/05 , G06F11/10 , H03M13/29
CPC分类号： H03M13/1102 , G06F11/1012 , G11B20/1833 , G11B2020/1823 , G11B2020/185 , G11B2220/2516 , G11B2220/61 , H03M13/1108 , H03M13/1142 , H03M13/455
摘要： Executed when a channel input (e.g., LDPC) codeword is written to a storage medium, a write-verification method (i) compares the channel input codeword to the written codeword, (ii) identifies any erroneous too bits, and (iii) stores the erroneous-bit indices to a record in a table. At some later time, the written codeword is read and sent to a decoder. If the decoder fails with a near codeword, a write-error recovery process searches the table and retrieves the erroneous-bit information. The codeword bits at those indices are adjusted, and the modified codeword is submitted to further processing.
摘要翻译：当将信道输入（例如，LDPC）码字写入存储介质时执行，写入验证方法（i）将信道输入码字与写入的码字进行比较，（ii）识别任何错误的位，以及（iii）存储表中的记录的错误位索引。在稍后的时间，写入的码字被读取并发送到解码器。如果解码器出现接近码字失败，则写入错误恢复过程将搜索表并检索错误位信息。调整这些索引处的码字比特，并且修改的码字被提交进一步处理。

9. 发明授权

US08045283B2 Amplitude-based approach for detection and classification of hard-disc defect regions 失效
标题翻译：基于幅度的硬盘缺陷区域检测和分类方法
公开(公告)号：US08045283B2
公开(公告)日：2011-10-25
申请号：US12729312
申请日：2010-03-23
申请人： Shaohua Yang , George Mathew , Yang Han , Zongwang Li , Yuan Xing Lee
发明人： Shaohua Yang , George Mathew , Yang Han , Zongwang Li , Yuan Xing Lee
IPC分类号： G11B27/36 , G11B5/02
CPC分类号： G11B20/1816 , G11B20/1883 , G11B2005/0018 , G11B2020/1823 , G11B2220/20 , G11B2220/2516
摘要： In a hard-disc drive, a defect region on the hard disc is classified as corresponding to either thermal asperity (TA) or media defect (MD) by generating two statistical measures. A first measure (e.g., α1) is based on (i) the magnitudes of one or both of signal values (e.g., equalizer input or output signal values) and the corresponding expected values of those signal values and (ii) the signs of one or both of the signal values and the expected signal values. A second measure (e.g., α2) is based on the magnitudes of one or both of the signal values and the expected signal values, but not the signs of either the signal values or the expected signal values. The two measures are then compared to determine whether the defect region corresponds to TA or MD.
摘要翻译：在硬盘驱动器中，通过产生两个统计测量值将硬盘上的缺陷区域分类为对应于热粗糙度（TA）或介质缺陷（MD）。第一测量（例如，α1）基于（i）信号值（例如，均衡器输入或输出信号值）中的一个或两个的大小以及那些信号值的相应期望值，以及（ii）一个或信号值和预期信号值两者。第二量度（例如，α2）基于信号值和预期信号值中的一个或两个的幅度，而不是信号值或期望信号值的符号。然后比较两个测量值以确定缺陷区域是否对应于TA或MD。

10. 发明申请

US20110141598A1 DISK SURFACE DEFECT INSPECTION METHOD AND APPARATUS 审中-公开
标题翻译：磁盘表面缺陷检查方法和装置
公开(公告)号：US20110141598A1
公开(公告)日：2011-06-16
申请号：US12967095
申请日：2010-12-14
申请人： Hideki MOCHIZUKI
发明人： Hideki MOCHIZUKI
IPC分类号： G11B5/02
CPC分类号： G11B20/10527 , G11B19/048 , G11B20/18 , G11B2020/1823 , G11B2220/2516 , G11B2220/2537
摘要： There is provided a detect inspection method and apparatus capable of performing a quick process of determining whether defects on a disk form an annular scratch defect or an island defect, by detecting an annular scratch defect in sum track areas with a deviation exceeding the standard deviation of an amount of defects detected in radius, in the histogram data containing the number of defects in radius, or by detecting an island defect in sum angle areas with a deviation exceeding the standard deviation of an amount of defects detected in angle, in the histogram data containing the number of defects in angle. Thus, the defect detection process can be performed step by step, by separating the annular scratch defect or the island defect from the other detects. As a result, a process load on the data processor can be reduced even if the number of detected defects increases.
摘要翻译：提供一种检测检查方法和装置，其能够通过以超过标准偏差的偏差检测到和轨道区域中的环状划痕缺陷来执行确定盘上的缺陷是否形成环状划痕缺陷或岛缺陷的快速过程在包含半径缺陷数的直方图数据中，或者通过在直方图数据中检测到具有偏离超过检测到的缺陷量的标准偏差的和角区域中的岛缺陷来检测半径的缺陷量包含角度缺陷的数量。因此，可以通过分离环境划痕缺陷或岛状缺陷来进行缺陷检测处理。结果，即使检测到的缺陷的数量增加，也可以减少数据处理器上的处理负荷。

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