专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US6035435A Method and apparatus for encoding a binary signal 失效
标题翻译：用于对二进制信号进行编码的方法和装置
公开(公告)号：US6035435A
公开(公告)日：2000-03-07
申请号：US940869
申请日：1997-09-30
申请人： Shih-Ming Shih , Hemant Thapar
发明人： Shih-Ming Shih , Hemant Thapar
IPC分类号： G06F11/10 , G11B20/10 , G11B20/14 , G11B20/18 , H03M5/14 , H03M13/31 , H03M13/41 , H03M13/23
CPC分类号： G11B20/1426 , G11B20/10009 , H03M13/31 , H03M5/145 , G11B2020/1434 , G11B2020/1446
摘要： A system and method are described for avoiding catastrophic error sequences in a media code sequence of symbols for data storage on a storage medium according to EPRML. The system and method includes modulation encoding user data which is to be stored on the storage medium using a modulation encoder. The modulation encoder outputs a channel code modulation output symbol sequence. The modulation code is defined according to a modulation criteria wherein the set of all possible modulation output symbol sequences is constrained in a manner which excludes certain excluded modulation output symbol sequences. A precoder precodes the channel code modulation output symbol sequence according to a precoding transfer function. The precoding transfer function transforms the channel code modulation output symbol sequence into a media code sequence of symbols and the preceding transfer function is defined so that when modulation encoding is performed according to the modulation criteria, the media code sequence of symbols is constrained to exclude EPRML catastrophic error sequences of greater than a determined length. The combination of the modulation encoding and the precoding prevents the media code sequence of symbols from including EPRML catastrophic error sequences greater than the determined length.
摘要翻译：描述了一种系统和方法，用于在根据EPRML的存储介质上的数据存储的媒体代码序列序列中避免灾难性错误序列。该系统和方法包括使用调制编码器对要存储在存储介质上的用户数据进行调制编码。调制编码器输出信道码调制输出符号序列。根据调制准则来定义调制码，其中所有可能的调制输出符号序列的集合以排除某些被排除的调制输出符号序列的方式被约束。预编码器根据预编码传递函数对信道码调制输出符号序列进行预编码。预编码传递函数将信道码调制输出符号序列变换成符号的媒体码序列，并且定义前述传递函数，使得当根据调制准则执行调制编码时，限制符号的媒体码序列以排除EPRML 大于确定长度的灾难性错误序列。调制编码和预编码的组合防止符号的媒体码序列包括大于所确定的长度的EPRML灾难性错误序列。

2. 发明授权

US08386882B2 Set partitioning and multilevel coding 有权
标题翻译：设置分区和多级编码
公开(公告)号：US08386882B2
公开(公告)日：2013-02-26
申请号：US13543096
申请日：2012-07-06
申请人： Jaekyun Moon , Hemant Thapar
发明人： Jaekyun Moon , Hemant Thapar
IPC分类号： H03M13/00
CPC分类号： H03M13/251 , G06F11/1012 , H03M13/152
摘要： A signal is encoded by receiving input data. A first portion of the input data is encoded to obtain a first set of encoded data. At least some part of the input data is processed to determine which one of a plurality of subsets the input data corresponds to. In the event the input data corresponds to a first subset having a greater signal margin (SM) than a second subset, the first set of encoded data and a second portion of the input data are output. In the event the input data corresponds to the second subset, the second portion of the input data is encoded to obtain a second set of encoded data and the first set of encoded data and the second set of encoded data are output.
摘要翻译：通过接收输入数据对信号进行编码。编码输入数据的第一部分以获得第一组编码数据。处理输入数据的至少一部分以确定输入数据对应于多个子集中的哪一个。在输入数据对应于具有比第二子集更大的信号余量（SM）的第一子集的情况下，输出第一组编码数据和输入数据的第二部分。在输入数据对应于第二子集的情况下，输入数据的第二部分被编码以获得第二组编码数据，并输出第一组编码数据和第二组编码数据。

3. 发明申请

US20120278680A1 SET PARTITIONING AND MULTILEVEL CODING 有权
标题翻译：设置分区和多编码
公开(公告)号：US20120278680A1
公开(公告)日：2012-11-01
申请号：US13543096
申请日：2012-07-06
申请人： Jaekyun Moon , Hemant Thapar
发明人： Jaekyun Moon , Hemant Thapar
IPC分类号： H03M13/29 , G06F11/10
CPC分类号： H03M13/251 , G06F11/1012 , H03M13/152
摘要： A signal is encoded by receiving input data. A first portion of the input data is encoded to obtain a first set of encoded data. At least some part of the input data is processed to determine which one of a plurality of subsets the input data corresponds to. In the event the input data corresponds to a first subset having a greater signal margin (SM) than a second subset, the first set of encoded data and a second portion of the input data are output. In the event the input data corresponds to the second subset, the second portion of the input data is encoded to obtain a second set of encoded data and the first set of encoded data and the second set of encoded data are output.
摘要翻译：通过接收输入数据对信号进行编码。编码输入数据的第一部分以获得第一组编码数据。处理输入数据的至少一部分以确定输入数据对应于多个子集中的哪一个。在输入数据对应于具有比第二子集更大的信号余量（SM）的第一子集的情况下，输出第一组编码数据和输入数据的第二部分。在输入数据对应于第二子集的情况下，输入数据的第二部分被编码以获得第二组编码数据，并输出第一组编码数据和第二组编码数据。

4. 发明授权

US08284870B1 Timing loop 有权
标题翻译：定时循环
公开(公告)号：US08284870B1
公开(公告)日：2012-10-09
申请号：US11350258
申请日：2006-02-07
申请人： Marcus Marrow , Shih-Ming Shih , Hemant Thapar
发明人： Marcus Marrow , Shih-Ming Shih , Hemant Thapar
IPC分类号： H04L27/00
CPC分类号： H04L25/03057 , H04L25/03267 , H04L25/03885 , H04L2025/03503
摘要： Recovering a data signal is disclosed. Recovering includes receiving an input signal from a magnetic recording channel, sampling the input signal according to a sampling clock having a sampling phase wherein the sampling phase is determined at least in part by comparing the sampled input signal to a signal associated with a decision, and filtering the sampled input signal according to a target.
摘要翻译：公开了恢复数据信号。恢复包括从磁记录通道接收输入信号，根据具有取样相位的采样时钟对输入信号进行采样，其中采样相位至少部分地通过将采样的输入信号与决定相关联的信号进行比较来确定，以及根据目标对采样的输入信号进行滤波。

5. 发明授权

US07917563B1 Read channel processor 有权
标题翻译：读通道处理器
公开(公告)号：US07917563B1
公开(公告)日：2011-03-29
申请号：US11350388
申请日：2006-02-07
申请人： Shih-Ming Shih , Hemant Thapar , Marcus Marrow
发明人： Shih-Ming Shih , Hemant Thapar , Marcus Marrow
IPC分类号： G06F17/10
CPC分类号： H03H21/0012 , G11B20/10009 , G11B20/10037 , G11B20/10046 , G11B20/10222 , G11B20/10296 , G11B20/1037 , G11B2220/2516 , G11B2220/2537
摘要： Adapting a read channel processor is disclosed. Adapting includes determining a target output for input data from a variable target function, determining a filter output corresponding to the input data from a programmable filter having programmable filter coefficients, comparing the target output and the filter output, and recursively updating both the variable target function and the programmable filter coefficients to improve the comparison between the target output and the filter output.
摘要翻译：公开了适配读通道处理器。适应包括从可变目标函数确定输入数据的目标输出，从具有可编程滤波器系数的可编程滤波器确定对应于输入数据的滤波器输出，比较目标输出和滤波器输出，以及递归地更新可变目标函数和可编程滤波器系数，以改善目标输出和滤波器输出之间的比较。

6. 发明授权

US06247159B1 Method and apparatus for encoding a binary signal 有权
标题翻译：用于对二进制信号进行编码的方法和装置
公开(公告)号：US06247159B1
公开(公告)日：2001-06-12
申请号：US09389872
申请日：1999-09-02
申请人： Shih-Ming Shih , Hemant Thapar
发明人： Shih-Ming Shih , Hemant Thapar
IPC分类号： G06F1110
CPC分类号： G11B20/1426 , G11B20/10009 , G11B2020/1434 , G11B2020/1446 , H03M5/145 , H03M13/31
摘要： A system and method described for avoiding catastrophic error sequences in a media code sequence of symbols for data storage on a storage medium according to EPRML. The system and method includes modulation encoding user data which is to be stored on the storage medium using a modulation encoder. The modulation encoder outputs a channel code modulation output symbol sequence. The modulation code is defined according to a modulation criteria wherein the set of all possible modulation output symbol sequences is constrained in a manner which excludes certain excluded modulation output symbol sequences. A precoder precodes the channel code modulation output symbol sequence according to a precoding transfer function. The precoding transfer function transforms the channel code modulation output symbol sequence into a media code sequence of symbols and the precoding transfer function is defined so that when modulation encoding is performed according to the modulation criteria, the media code sequence of symbols is constrained to exclude EPRML catastrophic error sequences of greater than a determined length. The combination of the modulation encoding and the precoding prevents the media code sequence of symbols from including EPRML catastrophic error sequences greater than the determined length.
摘要翻译：一种系统和方法，用于避免根据EPRML在存储介质上存储数据的媒体码符号序列中的灾难性错误序列。该系统和方法包括使用调制编码器对要存储在存储介质上的用户数据进行调制编码。调制编码器输出信道码调制输出符号序列。根据调制准则来定义调制码，其中所有可能的调制输出符号序列的集合以排除某些被排除的调制输出符号序列的方式被约束。预编码器根据预编码传递函数对信道码调制输出符号序列进行预编码。预编码传递函数将信道码调制输出符号序列转换为符号的媒体码序列，并且定义预编码传送函数，使得当根据调制准则执行调制编码时，限制符号的媒体码序列以排除EPRML 大于确定长度的灾难性错误序列。调制编码和预编码的组合防止符号的媒体码序列包括大于所确定的长度的EPRML灾难性错误序列。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式