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1. 发明授权

US06853731B1 Digital video recorder employing a unique ID to interlock with encrypted video programs stored on a storage device 有权
标题翻译：采用独特ID的数字录像机与存储在存储设备上的加密视频节目互锁
公开(公告)号：US06853731B1
公开(公告)日：2005-02-08
申请号：US09676635
申请日：2000-09-30
申请人： William B. Boyle , Alan P. Rice
发明人： William B. Boyle , Alan P. Rice
IPC分类号： G06F21/00 , H04N5/76 , H04N5/913 , H04N7/167
CPC分类号： H04N21/4147 , G06F21/10 , G06F21/78 , G06F21/80 , G06F2221/0744 , G06F2221/0797 , G06F2221/2107 , H04N5/76 , H04N5/913 , H04N21/42684 , H04N21/4405 , H04N21/4408 , H04N2005/91364
摘要： The present invention may be regarded as a digital video recorder (DVR) comprising a storage device for storing an encrypted video program, a unique ID for interlocking the encrypted video program with the digital video recorder, and a cryptography facility. The cryptography facility comprises an encoder, responsive to the unique ID, for encrypting a plaintext video program into the encrypted video program stored on the storage device, and a decoder, responsive to the unique ID, for decrypting the encrypted video program stored on the storage device into the plaintext video program during playback.
摘要翻译：本发明可以被认为是包括用于存储加密的视频节目的存储装置，用于将加密的视频节目与数字视频记录器互锁的唯一ID和密码设备的数字视频记录器（DVR）。加密设施包括响应于唯一ID的编码器，用于将明文视频节目加密到存储在存储设备上的加密视频节目中;以及解码器，响应于唯一ID，解密存储在存储器上的加密视频节目设备在播放过程中成为明文视频节目。

2. 发明授权

US06851063B1 Digital video recorder employing a file system encrypted using a pseudo-random sequence generated from a unique ID 有权
标题翻译：采用使用由唯一ID生成的伪随机序列加密的文件系统的数字录像机
公开(公告)号：US06851063B1
公开(公告)日：2005-02-01
申请号：US09676633
申请日：2000-09-30
申请人： William B. Boyle , Alan P. Rice
发明人： William B. Boyle , Alan P. Rice
IPC分类号： H04K1/02 , H04N5/913 , G06F1/24
CPC分类号： H04N5/913 , G11B20/00086 , G11B20/00195 , G11B20/0021 , G11B20/00246 , G11B20/00528 , G11B20/00557 , H04K1/02 , H04N2005/91364
摘要： A digital video recorder (DVR) is disclosed comprising a unique ID, a hard disk drive (HDD) for storing a plurality of encrypted video programs and an encrypted file system, the encrypted file system comprising a plurality of encrypted file system entries for decrypting the plurality of video programs. The DVR further comprises host circuitry for interfacing with the HDD, the host circuitry comprising a cryptography facility for encrypting plaintext file system entries into the encrypted file system entries stored on the HDD, and for decrypting the encrypted file system entries read from the HDD into plaintext file system entries. The cryptography facility comprises a pseudo-random sequence generator, responsive to the unique ID, for generating a pseudo-random sequence. The cryptography facility further comprises an encoder for combining the pseudo-random sequence with the plaintext file system entries to generate the encrypted file system entries stored on the HDD, and a decoder for combining the pseudo-random sequence with the encrypted file system entries read from the HDD to generate the plaintext file system entries.
摘要翻译：公开了一种数字视频记录器（DVR），其包括唯一ID，用于存储多个加密视频节目的硬盘驱动器（HDD）和加密文件系统，所述加密文件系统包括多个加密文件系统条目，用于解密多个视频节目。 DVR还包括用于与HDD接口的主机电路，主机电路包括用于将明文文件系统条目加密到存储在HDD上的加密文件系统条目中的加密设备，以及用于将从HDD读取的加密文件系统条目解密为明文文件系统条目。加密设施包括响应于唯一ID的伪随机序列发生器，用于产生伪随机序列。密码学设备还包括一个编码器，用于将伪随机序列与明文文件系统条目组合以产生存储在HDD上的加密文件系统条目;以及解码器，用于将伪随机序列与从 HDD来生成明文文件系统条目。

3. 发明授权

US06851055B1 Digital video recorder for encrypting/decrypting video programs in segments to facilitate trick play features 有权
标题翻译：用于加密/解密视频节目的数字视频录像机，以便于特技播放功能
公开(公告)号：US06851055B1
公开(公告)日：2005-02-01
申请号：US09676637
申请日：2000-09-30
申请人： William B. Boyle , Alan P. Rice
发明人： William B. Boyle , Alan P. Rice
IPC分类号： H04N5/783 , H04N5/913 , H04L1/24
CPC分类号： H04N5/913 , H04L9/0894 , H04L2209/60 , H04N5/783 , H04N2005/91364
摘要： A digital video recorder (DVR) is disclosed for storing a plaintext video program as an encrypted video program. The DVR comprises a random access storage (RAS) device for storing the encrypted video program in encrypted segments. The DVR further comprises a cryptography facility comprising an encoder for encrypting plaintext segments of the plaintext video program into the encrypted segments stored on the RAS device, and a decoder for randomly and independently decrypting the encrypted segments of the encrypted video program into plaintext segments during playback.
摘要翻译：公开了一种用于存储明文视频节目作为加密视频节目的数字视频记录器（DVR）。 DVR包括用于以加密的段存储加密的视频节目的随机存取存储（RAS）设备。 DVR还包括一个加密设备，它包括一个编码器，用于将明文视频节目的明文段加密成存储在RAS设备上的加密段;以及解码器，用于在回放期间随机和独立地将经加密的视频节目的加密段解密成明文段。

4. 发明授权

US07113365B1 Disk drive comprising a spindle motor having a windings shield for reduced disk voltage coupling 有权
标题翻译：磁盘驱动器包括具有用于减小磁盘电压耦合的绕组屏蔽的主轴电动机
公开(公告)号：US07113365B1
公开(公告)日：2006-09-26
申请号：US10329127
申请日：2002-12-24
申请人： Robert P. Ryan , Alan P. Rice , Jon E. Jacoby
发明人： Robert P. Ryan , Alan P. Rice , Jon E. Jacoby
IPC分类号： G11B19/20
CPC分类号： G11B19/2009 , H02K1/146 , H02K1/187 , H02K1/2786 , H02K5/1732 , H02K11/01 , H02K11/022 , H02K21/22
摘要： A disk drive is disclosed comprising a disk, a head actuated over a surface of the disk, and a spindle motor for rotating the disk. The spindle motor comprises a ring-shaped stator having a plurality of stator teeth each wound with a winding. The spindle motor further comprises a hub having a plurality of magnets for interacting with the stator teeth to rotate the hub about the shaft when the windings are energized. A ring-shaped shield is disposed in a vertical gap between the windings and the hub to reduce a voltage coupled from the windings to the surface of the disk.
摘要翻译：公开了一种磁盘驱动器，包括盘，在盘的表面上致动的头和用于旋转盘的主轴电机。主轴电动机包括具有多个定子齿的环形定子，每个定子齿缠绕有绕组。主轴电动机还包括具有多个磁体的轮毂，用于与定子齿相互作用以在绕组被通电时围绕轴旋转轮毂。环形屏蔽设置在绕组和轮毂之间的垂直间隙中以减小从绕组耦合到盘的表面的电压。

5. 发明授权

US08947822B1 Disk drive adjusting fly height based on air density measured from rate of temperature change 有权
标题翻译：基于空气密度的磁盘驱动器调整飞行高度，根据温度变化率测量
公开(公告)号：US08947822B1
公开(公告)日：2015-02-03
申请号：US12478606
申请日：2009-06-04
申请人： Alan P. Rice , Timothy A. Ferris
发明人： Alan P. Rice , Timothy A. Ferris
IPC分类号： G11B21/02
CPC分类号： G11B5/6011 , G11B5/6064
摘要： A disk drive is disclosed comprising a head actuated over a disk, wherein the head comprises a dynamic fly height (DFH) actuator. The disk drive further comprises an electrical heating element, and control circuitry operable to select an operating control signal applied to the DFH actuator by heating the electrical heating element for a first heating time, measuring a rate of temperature change of the electrical heating element, and selecting the operating control signal applied to the DFH actuator in response to the rate of temperature change.
摘要翻译：公开了一种磁盘驱动器，包括在磁盘上致动的磁头，其中磁头包括动态飞行高度（DFH）致动器。磁盘驱动器还包括电加热元件，以及控制电路，可操作以通过加热第一加热时间的电加热元件来测量施加到DFH致动器的操作控制信号，测量电加热元件的温度变化率，以及响应于温度变化率选择施加到DFH致动器的操作控制信号。

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