公开(公告)号：US08154822B1

公开(公告)日：2012-04-10

申请号：US12554787

申请日：2009-09-04

申请人： Zaihe Yu ,  Zining Wu ,  Michael Madden

发明人： Zaihe Yu ,  Zining Wu ,  Michael Madden

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： Methods, apparatuses, and systems implementing analog techniques to decode signals extracted from servo wedges of computer-readable storage media. A digital signal representing a repeatable runout (RRO) signal included in an analog signal of a computer-readable storage medium is obtained. The RRO signal includes a preamble that represents a magnitude of the RRO signal, and data. The digital signal includes a digital representation of the preamble. An estimate of the magnitude of the RRO signal is determined based on the digital representation. The estimate is compared with a specified level to generate an error signal based on a difference between the two. The provision of the error signal, for application to a subsequent RRO signal of the computer-readable storage medium, is delayed. The RRO signal is amplified prior to being represented as the digital signal to match a value established to decode the RRO signal.

摘要翻译： 实现模拟技术以解码从计算机可读存储介质的伺服楔中提取的信号的方法，装置和系统。 表示包含在计算机可读存储介质的模拟信号中的可重复跳动（RRO）信号的数字信号。 RRO信号包括表示RRO信号的大小的前导码和数据。 数字信号包括前导码的数字表示。 基于数字表示来确定RRO信号的幅度的估计。 将估计与指定电平进行比较，以根据两者之间的差异产生误差信号。 提供用于应用于计算机可读存储介质的后续RRO信号的错误信号被延迟。 RRO信号在被表示为数字信号之前被放大以匹配建立以解码RRO信号的值。

公开(公告)号：US08910009B1

公开(公告)日：2014-12-09

申请号：US12553049

申请日：2009-09-02

申请人： Heng Tang ,  Zaihe Yu ,  Gregory Burd ,  Panu Chaichanavong

发明人： Heng Tang ,  Zaihe Yu ,  Gregory Burd ,  Panu Chaichanavong

IPC分类号： H03M13/00

CPC分类号： H03M13/333 ,  H03M13/41 ,  H04L1/0041 ,  H04L1/0047 ,  H04L1/0061 ,  H04L1/0072 ,  H04L7/04

摘要： A transceiver includes a transmitter and a receiver. The transmitter includes an ECC encoder and a data frame generator. The ECC encoder is configured to generate an ECC parity from user data and at least one bit from a syncmark. The data frame generator is configured to generate a data frame for transmission from the syncmark, the user data, and the ECC parity. The receiver includes a detector, an inverter, and a decoder. The detector is configured to detect a received syncmark in a received data frame. The received data frame includes the received syncmark, received user data, and received ECC parity. The inverter is configured to selectively invert a sequence. The sequence includes the received user data, the received ECC parity, and at least one bit from the received syncmark. The decoder is configured to decode one of the sequence or the inverted sequence.

摘要翻译： 收发器包括发射机和接收机。 发射机包括ECC编码器和数据帧发生器。 ECC编码器被配置为从用户数据和来自同步标记的至少一个比特生成ECC奇偶校验。 数据帧生成器被配置为从同步标记，用户数据和ECC奇偶校验生成用于发送的数据帧。 接收机包括检测器，逆变器和解码器。 检测器被配置为检测接收到的数据帧中的接收到的同步信号。 接收到的数据帧包括接收的同步标记，接收的用户数据和接收的ECC奇偶校验。 逆变器被配置为选择性地反转序列。 该序列包括接收到的用户数据，接收到的ECC奇偶校验以及从所接收的同步标记中的至少一个比特。 解码器被配置为解码序列或反相序列之一。

公开(公告)号：US08405928B1

公开(公告)日：2013-03-26

申请号：US13353193

申请日：2012-01-18

申请人： Zaihe Yu ,  Zining Wu ,  Michael Madden

发明人： Zaihe Yu ,  Zining Wu ,  Michael Madden

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： Methods, apparatuses, and systems implementing analog techniques to decode signals extracted from servo wedges of computer-readable storage media. A digital representation of at least a portion of a repeatable runout (RRO) signal derived from an analog signal read from a computer-readable storage medium is obtained. An estimate of a magnitude of the RRO signal is determined based on the digital representation. An error signal is generated to represent a difference between the estimate of the magnitude and a specified level of the magnitude of the RRO signal, and a gain value is configured, based on the error signal, for decoding a signal from the computer-readable storage medium.

摘要翻译： 实现模拟技术以解码从计算机可读存储介质的伺服楔中提取的信号的方法，装置和系统。 获得从从计算机可读存储介质读取的模拟信号导出的可重复跳动（RRO）信号的至少一部分的数字表示。 基于数字表示来确定RRO信号的幅度的估计。 产生误差信号以表示幅度的估计与RRO信号的规定电平之间的差异，并且基于误差信号配置增益值，用于对来自计算机可读存储器的信号进行解码 中。

公开(公告)号：US08423870B1

公开(公告)日：2013-04-16

申请号：US12402438

申请日：2009-03-11

申请人： Panu Chiachanavong ,  Heng Tang ,  Zaihe Yu ,  Gregory Burd

发明人： Panu Chiachanavong ,  Heng Tang ,  Zaihe Yu ,  Gregory Burd

IPC分类号： H03M13/00

CPC分类号： H03M13/333 ,  H03M13/15 ,  H03M13/19 ,  H04L7/046

摘要： A method for generating a data frame for data transmission includes using a processor to generate a first padding field. The method also includes using the processor to generate one or more parity bits by encoding an input comprising the first padding field, a syncmark and data to be transmitted. The method also includes using the processor to add the one or more parity bits to the data frame. The method also includes using the processor to add a second padding field after the one or more parity bits.

摘要翻译： 一种用于产生用于数据传输的数据帧的方法包括使用处理器生成第一填充字段。 该方法还包括使用处理器通过对包括第一填充字段，同步标记和要发送的数据的输入进行编码来生成一个或多个奇偶校验位。 该方法还包括使用处理器将一个或多个奇偶校验位添加到数据帧。 该方法还包括使用处理器在一个或多个奇偶校验位之后添加第二填充字段。

公开(公告)号：US08261172B1

公开(公告)日：2012-09-04

申请号：US13282910

申请日：2011-10-27

申请人： Zaihe Yu ,  Michael Madden

发明人： Zaihe Yu ,  Michael Madden

IPC分类号： H03M13/03

CPC分类号： G11B20/10212 ,  G11B20/10175 ,  G11B20/10222 ,  G11B20/10277 ,  G11B20/10398 ,  G11B20/20 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/6343

摘要： Apparatus and methods are disclosed for decoding data stored on a data storage medium. A disclosed decoding method and decoder include a radial incoherence (RI) detector that increases the probability of detecting RI and improves the decoding performance in terms of the bit error rate of the decoded signal. RI is detected by comparing an input signal to the decoder against a RI threshold value and generating a RI-type signal. The RI detector may include a filter for filtering out noise and error in the RI-type signal, an adaptive threshold unit that adjusts the RI threshold value based upon the RI-type signal, a transition-based threshold unit that adjusts the RI threshold value based upon each transition in the input signal, or a path-based threshold unit that adjusts the RI threshold value based upon a best surviving path corresponding to the input signal, in combination or alone.

摘要翻译： 公开了用于对存储在数据存储介质上的数据进行解码的装置和方法。 所公开的解码方法和解码器包括径向不相干（RI）检测器，其增加检测RI的概率，并且根据解码信号的误码率提高解码性能。 通过将输入信号与解码器相对于RI阈值进行比较并产生RI型信号来检测RI。 RI检测器可以包括用于滤除RI型信号中的噪声和误差的滤波器，基于RI型信号调整RI阈值的自适应阈值单元，调整RI阈值的基于过渡的阈值单元 基于输入信号中的每个转换，或者基于路径的阈值单元，其组合地或组合地基于基于与输入信号对应的最佳幸存路径来调整RI阈值。

公开(公告)号：US08473830B1

公开(公告)日：2013-06-25

申请号：US13601404

申请日：2012-08-31

申请人： Zaihe Yu ,  Michael Madden

发明人： Zaihe Yu ,  Michael Madden

IPC分类号： H03M13/03

CPC分类号： G11B20/10212 ,  G11B20/10175 ,  G11B20/10222 ,  G11B20/10277 ,  G11B20/10398 ,  G11B20/20 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/6343

摘要： Apparatus and methods are disclosed for decoding data stored on a data storage medium. A disclosed decoding method and decoder include a radial incoherence (RI) detector that increases the probability of detecting RI and improves the decoding performance in terms of the bit error rate of the decoded signal. RI is detected by comparing an input signal to the decoder against a RI threshold value and generating a RI-type signal. The RI detector may include a filter for filtering out noise and error in the RI-type signal, an adaptive threshold unit that adjusts the RI threshold value based upon the RI-type signal, a transition-based threshold unit that adjusts the RI threshold value based upon each transition in the input signal, or a path-based threshold unit that adjusts the RI threshold value based upon a best surviving path corresponding to the input signal, in combination or alone.

公开(公告)号：US08289642B1

公开(公告)日：2012-10-16

申请号：US13184222

申请日：2011-07-15

申请人： Zaihe Yu ,  Michael Madden

发明人： Zaihe Yu ,  Michael Madden

IPC分类号： G11B5/09

CPC分类号： G11B5/59627 ,  G11B5/09 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10314 ,  G11B20/1217 ,  G11B2020/1281 ,  G11B2220/2516

摘要： Methods, apparatuses, and systems describing digital techniques to decode signals extracted from computer-readable storage media include, in at least some implementations, a method including receiving a digital signal representing at least a portion of an analog signal from a computer-readable storage medium, the analog signal including a repeatable runout (RRO) signal component, determining an estimate of a magnitude of at least a portion of the RRO signal component, and decoding the digital signal at least in part by configuring a gain target value based on the estimate of the magnitude. In some implementations, the method includes causing the gain target value to change from a predetermined default gain target value to the configured gain target value based on the estimate of the magnitude.

摘要翻译： 在至少一些实施方式中，描述用于对从计算机可读存储介质提取的信号进行解码的数字技术的方法，装置和系统包括在计算机可读存储介质中接收表示模拟信号的至少一部分的数字信号的方法 ，所述模拟信号包括可重复的跳动（RRO）信号分量，确定所述RRO信号分量的至少一部分的幅度的估计，以及至少部分地通过基于估计来配置增益目标值来解码所述数字信号 的数量。 在一些实现中，该方法包括使增益目标值基于大小的估计从预定的默认增益目标值改变为所配置的增益目标值。

公开(公告)号：US08051365B1

公开(公告)日：2011-11-01

申请号：US12015913

申请日：2008-01-17

申请人： Zaihe Yu ,  Michael Madden

发明人： Zaihe Yu ,  Michael Madden

IPC分类号： H03M13/03

CPC分类号： G11B20/10212 ,  G11B20/10175 ,  G11B20/10222 ,  G11B20/10277 ,  G11B20/10398 ,  G11B20/20 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/6343

摘要： Apparatus and methods are disclosed for decoding data stored on a data storage medium. A disclosed decoding method and decoder include a radial incoherence (RI) detector that increases the probability of detecting RI and improves the decoding performance in terms of the bit error rate of the decoded signal. RI is detected by comparing an input signal to the decoder against a RI threshold value and generating a RI-type signal. The RI detector may include a filter for filtering out noise and error in the RI-type signal, an adaptive threshold unit that adjusts the RI threshold value based upon the RI-type signal, a transition-based threshold unit that adjusts the RI threshold value based upon each transition in the input signal, or a path-based threshold unit that adjusts the RI threshold value based upon a best surviving path corresponding to the input signal, in combination or alone.

摘要翻译： 公开了用于对存储在数据存储介质上的数据进行解码的装置和方法。 所公开的解码方法和解码器包括径向不相干（RI）检测器，其增加检测RI的概率，并且根据解码信号的误码率提高解码性能。 通过将输入信号与解码器相对于RI阈值进行比较并产生RI型信号来检测RI。 RI检测器可以包括用于滤除RI型信号中的噪声和误差的滤波器，基于RI型信号调整RI阈值的自适应阈值单元，调整RI阈值的基于过渡的阈值单元 基于输入信号中的每个转换，或者基于路径的阈值单元，其组合地或组合地基于基于与输入信号对应的最佳幸存路径来调整RI阈值。

公开(公告)号：US07982990B1

公开(公告)日：2011-07-19

申请号：US12554771

申请日：2009-09-04

申请人： Zaihe Yu ,  Michael Madden

发明人： Zaihe Yu ,  Michael Madden

IPC分类号： G11B5/09

CPC分类号： G11B5/59627 ,  G11B5/09 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10314 ,  G11B20/1217 ,  G11B2020/1281 ,  G11B2220/2516

摘要： Methods, apparatuses, and systems describing digital techniques to decode signals extracted from computer-readable storage media. A digital signal that includes a digital representation of a repeatable runout signal having a magnitude and included in an analog signal is obtained. An estimate of the magnitude of the RRO signal based on the digital signal is determined. The estimate is provided for decoding the digital signal to extract the included data by adapting a detector gain target in accordance with the estimate. The detector gain target is a function of a desired amplitude of the RRO signal.

摘要翻译： 描述用于对从计算机可读存储介质提取的信号进行解码的数字技术的方法，装置和系统。 获得包括具有幅度并包含在模拟信号中的可重复跳动信号的数字表示的数字信号。 确定基于数字信号的RRO信号幅度的估计。 提供估计用于对数字信号进行解码以通过根据估计调整检测器增益目标来提取所包含的数据。 检测器增益目标是RRO信号的期望幅度的函数。