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1. 发明申请

US20080259484A1 READ CHANNEL APPARATUS FOR ASYNCHRONOUS SAMPLING AND SYNCHRONOUS EQUALIZATION 有权
标题翻译：阅读通道设备用于异步采样和同步均衡
公开(公告)号：US20080259484A1
公开(公告)日：2008-10-23
申请号：US12166136
申请日：2008-07-01
申请人： EVANGELOS S. ELEFTHERIOU , ROBERT A. HUTCHINS , GLEN A. JAQUETTE , JENS JELITTO , SEDAT OELOER
发明人： EVANGELOS S. ELEFTHERIOU , ROBERT A. HUTCHINS , GLEN A. JAQUETTE , JENS JELITTO , SEDAT OELOER
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B20/10055
摘要： A read channel and method using that read channel are disclosed. The read channel comprises an analog to digital converter which asynchronously samples at a fixed rate an analog signal formed by reading a data track, where that data track was written to a data storage medium at a symbol rate and an interpolator interconnected with the analog to digital converter. The read channel further comprises a fractionally-spaced equalizer, where the interpolator provides an interpolated signal to the fractionally-spaced equalizer at an interpolation rate, where that interpolation rate is greater than the symbol rate. The fractionally-spaced equalizer forms a synchronous equalized signal. The read channel further comprises a gain control module interconnected with the fractionally-spaced equalizer, and a sequence detector interconnected with the gain control module.
摘要翻译：公开了使用该读通道的读通道和方法。读通道包括模数转换器，其以固定速率异步采样通过读取数据轨道形成的模拟信号，其中数据轨道以符号速率写入数据存储介质，并且与模数转换器互连的内插器转换器。读通道还包括分数间隔的均衡器，其中内插器以内插速率向分数间隔的均衡器提供内插信号，其中该内插速率大于符号率。分数间隔均衡器形成同步均衡信号。读通道还包括与分数间隔均衡器互连的增益控制模块，以及与增益控制模块互连的序列检测器。

2. 发明申请

US20110205657A1 SYNCHRONIZATION OF SYMMETRIC TIMING BASED SERVO BURSTS 有权
标题翻译：基于对称时序的伺服脉冲同步
公开(公告)号：US20110205657A1
公开(公告)日：2011-08-25
申请号：US12712039
申请日：2010-02-24
申请人： GIOVANNI CHERUBINI , ROBERT A. HUTCHINS , JENS JELITTO , MARK A. LANTZ
发明人： GIOVANNI CHERUBINI , ROBERT A. HUTCHINS , JENS JELITTO , MARK A. LANTZ
IPC分类号： G11B5/09 , G11B5/584
CPC分类号： G11B5/584 , G11B5/09
摘要： Timing based servo bursts of servo frames, in which the frames are arranged to be symmetric with the same number of servo stripes in each burst of a frame, are synchronized by shifting selected bits. For example, servo frames are arranged with four servo bursts with an equal number of servo stripes in each burst, the servo frames comprising two symmetric sub-frames, each sub-frame comprising two bursts of servo stripes that are parallel to each other within a burst, and the bursts are non-parallel with respect to each other; each servo burst is arranged to comprise at least one reference servo stripe; and each servo burst is arranged to comprise at least one shifted servo stripe, wherein the shift is in the same longitudinal direction with respect to at least one reference servo stripe for each burst of a frame and the opposite longitudinal direction for bursts of sequentially adjacent frames.
摘要翻译：伺服帧的基于时序的伺服脉冲串通过移位所选位来同步，其中帧被布置为在帧的每个突发中具有相同数量的伺服条带对称。例如，伺服帧被布置成具有在每个突发中具有相等数量的伺服条带的四个伺服脉冲串，伺服帧包括两个对称子帧，每个子帧包括在一个内部的彼此平行的两个脉冲串的伺服条带突发，并且突发是相互不平行的; 每个伺服脉冲串被布置成包括至少一个参考伺服条纹; 并且每个伺服脉冲串被布置成包括至少一个移位的伺服条带，其中相对于帧的每个脉冲串相对于至少一个参考伺服条带的移位在相同的纵向方向上，并且相反的纵向方向用于顺序相邻帧的突发。

3. 发明申请

US20100318867A1 APPARATUS AND METHOD TO READ INFORMATION FROM AN INFORMATION STORAGE MEDIUM 失效
公开(公告)号：US20100318867A1
公开(公告)日：2010-12-16
申请号：US12862648
申请日：2010-08-24
申请人： JAMES J. HOWARTH , ROBERT A. HUTCHINS
发明人： JAMES J. HOWARTH , ROBERT A. HUTCHINS
IPC分类号： H03M13/00 , G06F12/00
CPC分类号： G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B20/10074 , G11B20/10175 , G11B20/10222 , G11B20/10425 , G11B20/10481 , G11B2020/10675 , G11B2020/10759 , G11B2220/2537 , G11B2220/41 , G11B2220/90
摘要： A method and apparatus to read information from an information storage medium using a read channel, where that read channel includes a data cache. The invention generates an analog waveform comprising the information, and provides that analog waveform to a read channel, and generates a digital signal from that analog waveform using one or more first operating parameters. The method error corrects that digital signal at an actual error correction rate, and determines if the actual error correction rate is greater than an error correction rate threshold. If the actual error correction rate exceeds the error correction rate threshold, then the method captures the digital signal, stores that captured data in a data cache, reads that digital signal from the cache, generates one or more second operating parameters, and provides those one or more second operating parameters to the read channel. Thereafter, the method uses those one or more second operating parameters to read the information from the information storage medium.

4. 发明申请

US20100318868A1 APPARATUS AND METHOD TO READ INFORMATION FROM AN INFORMATION STORAGE MEDIUM 失效
标题翻译：从信息存储介质读取信息的装置和方法
公开(公告)号：US20100318868A1
公开(公告)日：2010-12-16
申请号：US12862650
申请日：2010-08-24
申请人： JAMES J. HOWARTH , ROBERT A. HUTCHINS
发明人： JAMES J. HOWARTH , ROBERT A. HUTCHINS
IPC分类号： H03M13/00 , G06F7/02 , G06F11/08
CPC分类号： G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B20/10074 , G11B20/10175 , G11B20/10222 , G11B20/10425 , G11B20/10481 , G11B2020/10675 , G11B2020/10759 , G11B2220/2537 , G11B2220/41 , G11B2220/90
摘要： A method and apparatus to read information from an information storage medium using a read channel, where that read channel includes a data cache. The invention generates an analog waveform comprising the information, and provides that analog waveform to a read channel, and generates a digital signal from that analog waveform using one or more first operating parameters. The method error corrects that digital signal at an actual error correction rate, and determines if the actual error correction rate is greater than an error correction rate threshold. If the actual error correction rate exceeds the error correction rate threshold, then the method captures the digital signal, stores that captured data in a data cache, reads that digital signal from the cache, generates one or more second operating parameters, and provides those one or more second operating parameters to the read channel. Thereafter, the method uses those one or more second operating parameters to read the information from the information storage medium.
摘要翻译：一种使用读通道从信息存储介质读取信息的方法和装置，其中该读通道包括数据高速缓存。本发明产生包含该信息的模拟波形，并将该模拟波形提供给读通道，并使用一个或多个第一操作参数从该模拟波形生成数字信号。方法误差以实际的纠错率校正数字信号，并确定实际的纠错率是否大于纠错率阈值。如果实际的纠错率超过纠错率阈值，则该方法捕获数字信号，将捕获的数据存储在数据高速缓存中，从高速缓存中读取该数字信号，产生一个或多个第二操作参数，并提供那些或更多的第二操作参数。此后，该方法使用这些一个或多个第二操作参数来从信息存储介质读取信息。

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