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1. 发明申请

US20050270856A1 Multi-level format for information storage 审中-公开
标题翻译：用于信息存储的多级格式
公开(公告)号：US20050270856A1
公开(公告)日：2005-12-08
申请号：US11140151
申请日：2005-05-31
申请人： Tod Earhart , Mark Ayres , Will Loechel , Adrian Hill , Kenton Pharris , Kevin Curtis , William Wilson
发明人： Tod Earhart , Mark Ayres , Will Loechel , Adrian Hill , Kenton Pharris , Kevin Curtis , William Wilson
IPC分类号： G11C5/00
CPC分类号： G11B27/105 , G11B20/12 , G11B27/11 , G11B27/329 , G11B2220/2504 , G11B2220/657
摘要： The present invention provides systems and methods for logically organizing data for storage and recovery on a data storage medium using a multi-level format. The present invention also provides systems and methods for protecting data stored on data storage medium so that the data may be recovered without errors.
摘要翻译：本发明提供用于使用多级格式在数据存储介质上逻辑地组织用于存储和恢复的数据的系统和方法。本发明还提供了用于保护存储在数据存储介质上的数据的系统和方法，使得数据可以无错误地被恢复。

2. 发明授权

US5872665A Programmable write equalization for magnetic data recording 失效
标题翻译：用于磁数据记录的可编程写均衡
公开(公告)号：US5872665A
公开(公告)日：1999-02-16
申请号：US508850
申请日：1995-07-28
申请人： Mark Millican , Erik Habbinga , Tod Earhart
发明人： Mark Millican , Erik Habbinga , Tod Earhart
IPC分类号： G11B5/035 , G11B5/09 , G11B20/10
CPC分类号： G11B20/10009 , G11B5/09 , G11B5/035
摘要： A circuit and method for generating write compensated write data signals in magnetic data recording. The circuitry is programmable to enable generation of write compensation meeting a variety of write compensation specifications. In particular, the circuitry can be programmed to generate extra write pulses, to adjust the pulse width and to adjust the pulse spacing within data cells. In an example embodiment, an input waveform drives a reset input on a state machine. An output waveform shape is stored as a pattern of bits in a register. The state of the state machine determines which register bits are selected by a multiplexer for output as a new write compensated write data signal.
摘要翻译：一种用于在磁数据记录中产生写补偿写数据信号的电路和方法。该电路是可编程的，能够产生符合各种写补偿规范的写补偿。特别地，电路可以被编程以产生额外的写入脉冲，以调整脉冲宽度并且调整数据单元内的脉冲间隔。在示例实施例中，输入波形驱动状态机上的复位输入。输出波形形状作为位的模式存储在寄存器中。状态机的状态确定由多路复用器选择哪些寄存器位作为新的写补偿写数据信号输出。

3. 发明申请

US20050270855A1 Data protection system 失效
标题翻译：数据保护系统
公开(公告)号：US20050270855A1
公开(公告)日：2005-12-08
申请号：US11139806
申请日：2005-05-31
申请人： Tod Earhart , Mark Ayres , Will Loechel , Adrian Hill , Kenton Pharris , Kevin Curtis , William Wilson
发明人： Tod Earhart , Mark Ayres , Will Loechel , Adrian Hill , Kenton Pharris , Kevin Curtis , William Wilson
IPC分类号： G11B20/18 , G11C5/00
CPC分类号： G06F3/0619 , G06F3/06 , G06F3/0623 , G06F3/0644 , G06F3/0673 , G06F3/0676 , G06F11/1016 , G06F11/1076 , G11B7/00781 , G11B20/1217 , G11B20/1803 , G11B20/1866 , G11B20/1879 , G11B27/327 , G11B2020/10861 , G11B2020/1235 , G11B2020/1275 , G11B2020/1278 , G11B2020/1285 , G11B2020/1836 , G11B2020/1896 , G11B2220/2504 , G11B2220/40
摘要： The present invention provides systems and methods for logically organizing data for storage and recovery on a data storage medium using a multi-level format. The present invention also provides systems and methods for protecting data stored on data storage medium so that the data may be recovered without errors.
摘要翻译：本发明提供用于使用多级格式在数据存储介质上逻辑地组织用于存储和恢复的数据的系统和方法。本发明还提供用于保护存储在数据存储介质上的数据的系统和方法，使得数据可以没有错误地被恢复。

4. 发明授权

US07492691B2 Supplemental memory having media directory 有权
标题翻译：具有媒体目录的补充内存
公开(公告)号：US07492691B2
公开(公告)日：2009-02-17
申请号：US10757855
申请日：2004-01-14
申请人： Tod Earhart
发明人： Tod Earhart
IPC分类号： G11B7/00
CPC分类号： G11B23/281 , G11B7/0065 , G11B23/0305 , G11B27/11 , G11B2220/657
摘要： Disclosed is a holographic data storage device including holographic media for containing data, writing data to and reading data from. The storage device also includes at least one supplemental memory for containing at least a portion of a directory of the data contained in the holographic media. By locating directory information for the holographic media in a supplemental memory, areas of the holographic media that have not yet been written to can be determined prior to accessing the holographic media. In this way, activating photo-sensitive agents in unwritten areas of the holographic media can be avoided unless these areas are being written to.
摘要翻译：公开了一种全息数据存储装置，其包括用于包含数据，向其中读取数据和从其读取数据的全息介质。存储设备还包括至少一个补充存储器，用于包含全息介质中包含的数据的目录的至少一部分。通过将全息介质的目录信息定位在补充存储器中，可以在访问全息介质之前确定尚未被写入的全息介质的区域。以这种方式，除非正在写入这些区域，否则可以避免在全息介质的未写入区域中激活光敏剂。

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