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1. 发明申请

US20070226412A1 Storage device, controller for storage device, and storage device control method 审中-公开
标题翻译：存储设备，存储设备控制器和存储设备控制方法
公开(公告)号：US20070226412A1
公开(公告)日：2007-09-27
申请号：US11707740
申请日：2007-02-15
申请人： Harumi Morino , Jun Kitahara , Mariko Kasai , Yoshiju Watanabe
发明人： Harumi Morino , Jun Kitahara , Mariko Kasai , Yoshiju Watanabe
IPC分类号： G06F13/00
CPC分类号： G06F21/10 , G06F21/64 , G06F2221/0771 , G06F2221/0782
摘要： Embodiments in accordance with the present invention relate to realizing content protection by enhancing data safety by detecting falsification of data stored in a storage device. A storage device in accordance with an embodiment of the present invention includes an HDA (Head Disk Assembly) and a controller, and a nonvolatile memory that is connected to the controller. When writing data on a hard disk from an external device, validity of access is authenticated. When the authentication is successful, a digest of the data to be written is generated by using a hush function. The generated digest is stored in the nonvolatile memory. When reading out data, a digest of the data to be read out is generated, and the digest stored in the nonvolatile memory is read out, followed by verification of whether or not the digests coincide with each other. Since there is a possibility of falsification in the case where the digests do not coincide with each other, the possibility of falsification is informed to the external device.
摘要翻译：根据本发明的实施例涉及通过检测存储在存储装置中的数据的伪造来提高数据安全性来实现内容保护。根据本发明的实施例的存储设备包括HDA（头盘组件）和控制器，以及连接到控制器的非易失性存储器。当从外部设备在硬盘上写入数据时，访问的有效性被认证。当认证成功时，通过使用静音功能生成要写入的数据的摘要。生成的摘要存储在非易失性存储器中。当读出数据时，生成要读出的数据的摘要，读取存储在非易失性存储器中的摘要，然后验证摘要是否一致。由于在消化不相符的情况下存在伪造的可能性，因此可以将外部设备通知篡改的可能性。

2. 发明授权

US08424081B2 Disk unit, magnetic disk unit and information storage unit 有权
标题翻译：磁盘单元，磁盘单元和信息存储单元
公开(公告)号：US08424081B2
公开(公告)日：2013-04-16
申请号：US11650328
申请日：2007-01-05
申请人： Yoshiju Watanabe
发明人： Yoshiju Watanabe
IPC分类号： G06F12/14
CPC分类号： G11B19/122 , G11B20/00086 , G11B20/00137 , G11B20/00695 , G11B20/00702
摘要： Embodiments in accordance with the present invention provide a disk unit capable of restricting access to data stored in the recording medium depending on users. In one embodiment, the user enters a password into a host computer. This password is transferred to a password verification section. Then, the password verification section checks whether the password coincides with any one of authentication passwords stored in an authentication password storage section. If the password coincides with any one of the passwords, the password verification section supplies an authentication signal to an operation mode control section. The operation mode control section supplies an operation mode signal to a controller by receiving the authentication signal. The controller controls execution of the operation mode according to the operation mode signal.
摘要翻译：根据本发明的实施例提供一种盘单元，其能够根据用户限制对存储在记录介质中的数据的访问。在一个实施例中，用户将密码输入主计算机。该密码被传送到密码验证部分。然后，密码验证部分检查密码是否与存储在认证密码存储部分中的任一认证密码一致。如果密码与任何一个密码一致，密码验证部分向操作模式控制部分提供认证信号。操作模式控制部分通过接收认证信号将操作模式信号提供给控制器。控制器根据操作模式信号控制操作模式的执行。

3. 发明授权

US07199955B2 Decoding apparatus and decoding method 失效
标题翻译：解码装置和解码方法
公开(公告)号：US07199955B2
公开(公告)日：2007-04-03
申请号：US10761322
申请日：2004-01-22
申请人： Akihiko Hirano , Seiichi Mita , Yoshiju Watanabe
发明人： Akihiko Hirano , Seiichi Mita , Yoshiju Watanabe
IPC分类号： G11B5/09
CPC分类号： G11B20/1833 , G11B5/012 , G11B5/09 , G11B20/10009 , H03M5/145 , H03M13/31
摘要： In a coding method which does not restrict a run length of “1” while data is recorded/reproduced, there are such a drawback that when an error correction is carried out, a total number of error data to be corrected is increased, and also errors of not-detectable data are increased. While data is coded, a continuous number of “1” contained in a code word is limited, and then an error correction is carried out inside a coding/decoding process operation. Thus, a recording/reproducing apparatus having a small number of decoding errors is available.
摘要翻译：在数据被记录/再现时不限制游程长度为“1”的编码方法存在这样的缺点：当执行错误校正时，增加要纠正的错误数据的总数，并且还不可检测数据的错误增加。在对数据进行编码的同时，对码字中包含的连续数“1”进行限制，然后在编码/解码处理动作中进行纠错。因此，具有少量解码错误的记录/再现装置是可用的。

4. 发明授权

US06976196B2 Error detecting method and device, information storing and reproducing device and magnetic disk drive 失效
标题翻译：错误检测方法和装置，信息存储和再现装置以及磁盘驱动器
公开(公告)号：US06976196B2
公开(公告)日：2005-12-13
申请号：US10364746
申请日：2003-02-10
申请人： Yoshiju Watanabe
发明人： Yoshiju Watanabe
IPC分类号： G11B20/10 , G11B20/12 , G11B20/14 , G11B20/18 , G11B27/30 , G11B27/36 , G11C29/00 , G06F11/00 , G11B5/09
CPC分类号： G11B27/36 , G11B20/18 , G11B27/3027 , G11B2220/20 , G11B2220/2525
摘要： In order to precisely detect latent defects where a data-synchronizing signal is to be stored despite changes in the rotation of an information storage medium, a region data detection is used during a defect detection mode that is longer in the back-and-forth direction than a data-synchronizing signal used during a normal operation mode. The data detection region may be increased by the amount of change in the rotation. Thus, latent defects that may, due to a change in the rotation of the storage medium, come into agreement with the position of a data-synchronizing signal utilized during a normal mode of operation may be reliably detected, maintaining a high precision by taking a change in the rotation of the storage medium into consideration.
摘要翻译：为了精确地检测潜在的缺陷，尽管信息存储介质的旋转变化，数据同步信号将被存储，但在前后方向的缺陷检测模式中使用区域数据检测比在正常操作模式期间使用的数据同步信号。数据检测区域可以增加旋转的变化量。因此，可以可靠地检测由于存储介质的旋转的变化而与正常工作模式下使用的数据同步信号的位置一致的潜在缺陷，通过采取考虑到存储介质的旋转的变化。

5. 发明申请

US20050219731A1 Magnetic disk drive with a use time limiting function 审中-公开
标题翻译：具有使用时间限制功能的磁盘驱动器
公开(公告)号：US20050219731A1
公开(公告)日：2005-10-06
申请号：US11100108
申请日：2005-04-05
申请人： Yoshiju Watanabe
发明人： Yoshiju Watanabe
IPC分类号： G06F21/24 , G06F3/06 , G06F12/00 , G06F12/14 , G06F21/00 , G07F7/00 , G11B19/02 , G11B19/04
CPC分类号： G11B19/02 , G06F3/0623 , G06F3/0637 , G06F3/0676 , G06F21/10 , G06Q20/123 , G06Q20/127 , G07F17/0014
摘要： Embodiments of the invention properly limit the contents use time in a contents rental system. In one embodiment, a magnetic disk drive includes a time-based operation control module, which comprises a use time limit (Tlimit) setup unit, a use time limit retention unit, a control unit, a last use time (Tlast) retention unit, a present time (Tnow) retention unit, and a counter. The employed configuration is such that Tlast is not transferred out of the magnetic disk drive. Tlimit can be set only once or can be updated concurrently with data. While the magnetic disk drive is used, Tnow is acquired via an interface upon command from a host. The control unit checks Tlimit and Tlast to judge whether Tlast
摘要翻译：本发明的实施例适当地限制了内容租赁系统中的内容使用时间。在一个实施例中，磁盘驱动器包括基于时间的操作控制模块，其包括使用时间限制（Tlimit）设置单元，使用时间限制保持单元，控制单元，最后使用时间（Tlast）保持单元，现在（Tnow）保留单元和计数器。所采用的配置使得Tlast不被转移出磁盘驱动器。 Tlimit只能设置一次，或者可以同时更新数据。当使用磁盘驱动器时，通过主机命令通过接口获取Tnow。控制单元检查Tlimit和Tlast以判断Tlast

6. 发明申请

US20100031061A1 Data storage device and management method of cryptographic key thereof 有权
标题翻译：数据存储装置及其加密密钥的管理方法
公开(公告)号：US20100031061A1
公开(公告)日：2010-02-04
申请号：US12079699
申请日：2008-03-27
申请人： Yoshiju Watanabe , Toshio Kakihara
发明人： Yoshiju Watanabe , Toshio Kakihara
IPC分类号： G06F12/14
CPC分类号： G11B20/0021 , G06F21/80 , G11B20/00086 , G11B20/00137 , G11B20/00152 , G11B20/00246 , G11B20/00253 , G11B20/00492 , G11B2220/2516 , H04L9/0844 , H04L9/0891
摘要： Embodiments of the present invention help to securely manage a data cryptographic key in a data storage device. In an embodiment of the present invention, a cryptographic processor for encrypting and decrypting data is located between a host interface and a memory manager. In parts of the hard disk drive (HDD), except for the host interface, the HDD handles user data in an encrypted state. A data cryptographic key which the cryptographic processor uses to encrypt and decrypt the user data is encrypted and stored in a magnetic disk. A multiprocessing unit (MPU) decrypts the data cryptographic key using a password and a random number to supply it to the cryptographic processor. Using the password and the random number, the HDD can manage the data cryptographic key with more security.
摘要翻译：本发明的实施例有助于安全地管理数据存储设备中的数据密码密钥。在本发明的实施例中，用于加密和解密数据的密码处理器位于主机接口和存储器管理器之间。在硬盘驱动器（HDD）的部分，除了主机接口之外，HDD处理加密状态下的用户数据。加密处理器用于加密和解密用户数据的数据密码密钥被加密并存储在磁盘中。多处理单元（MPU）使用密码和随机数解密数据加密密钥以将其提供给密码处理器。使用密码和随机数，HDD可以更安全地管理数据加密密钥。

7. 发明授权

US06972917B2 Signal processing technique for preventing delay in read time from retry operations 失效
标题翻译：用于防止重试操作中读取时间延迟的信号处理技术
公开(公告)号：US06972917B2
公开(公告)日：2005-12-06
申请号：US10079997
申请日：2002-02-19
申请人： Hideaki Maeda , Yoshiju Watanabe , Naoki Satoh , Yasuyuki Ito
发明人： Hideaki Maeda , Yoshiju Watanabe , Naoki Satoh , Yasuyuki Ito
IPC分类号： G11B5/012 , G11B5/09 , G11B19/04 , G11B20/14
CPC分类号： G11B19/04 , G11B5/012 , G11B5/09 , G11B20/1403
摘要： The present invention enables recovery of data reading, even when thermal asperities or defective media will make it impossible to increase the number of retries or to read the data, occur in the AGC/PLL part. In a device for writing and reading information, when an error occurs in the region of the recording media where the AGC/PLL signal is written, and if that information is written continuously to several sectors, then data reading is performed by using the AGC/PLL of the following sector, without performing a retry, or by performing a minimum number of retries.
摘要翻译：本发明能够恢复数据读取，即使在热凹凸或有缺陷的介质使得不可能增加在AGC / PLL部分中发生的重试次数或读取数据。在用于写入和读取信息的装置中，当写入AGC / PLL信号的记录介质的区域中出现错误，并且如果该信息被连续写入几个扇区，则通过使用AGC / 下一个扇区的PLL，而不执行重试，或通过执行最少的重试次数。

8. 发明申请

US20050028042A1 Information recording and reproducing method and information recording and reproducing device 有权
标题翻译：信息记录和再现方法和信息记录和再现装置
公开(公告)号：US20050028042A1
公开(公告)日：2005-02-03
申请号：US10930858
申请日：2004-09-01
申请人： Yoshiju Watanabe
发明人： Yoshiju Watanabe
IPC分类号： G11B21/08 , G11B5/00 , G11B5/012 , G11B19/04 , G11B20/18 , H04B1/74
CPC分类号： G11B20/1879 , G11B5/012 , G11B19/04 , G11B2005/001 , G11B2020/1062 , G11B2020/183
摘要： When an error requiring a retry operation occurs, information concerning the error is stored every time. The information includes a sector number (or beginning sector number and number of sectors), the content of the command; a write or read designation, and the number of the times of error occurrence in the sector (or number of the times of retry operation), for example. In the case of recording information, like the prior art, information to be written which is stored in a buffer memory is held as is. Since the information concerning an error requiring a retry operation is stored, even though that error occurs repeatedly, a write and/or read operation of the next executable command to another track is executed without immediately switching to the retry operation. Thus, other commands are executed between the occurrence of the error requiring a retry operation and actual execution of the retry operation.
摘要翻译：当发生需要重试操作的错误时，每次都存储有关错误的信息。该信息包括扇区号（或扇区号的开始部分和扇区数），命令的内容; 写入或读取指定，以及扇区中的错误发生次数（或重试操作次数）的次数。在记录信息的情况下，像现有技术一样，保存存储在缓冲存储器中的待写入信息。由于存在关于需要重试操作的错误的信息，即使该错误重复发生，也可以执行下一个可执行命令到另一个轨道的写入和/或读取操作，而不需要立即切换到重试操作。因此，在需要重试操作的错误的发生和重试操作的实际执行之间执行其他命令。

9. 发明授权

US06335841B1 Coding apparatus and coding method 失效
标题翻译：编码装置及编码方法
公开(公告)号：US06335841B1
公开(公告)日：2002-01-01
申请号：US09502056
申请日：2000-02-10
申请人： Akihiko Hirano , Seiichi Mita , Yoshiju Watanabe
发明人： Akihiko Hirano , Seiichi Mita , Yoshiju Watanabe
IPC分类号： G11B509
CPC分类号： G11B20/1833 , G11B5/012 , G11B5/09 , G11B20/10009 , H03M5/145 , H03M13/31
摘要： In a coding method which does not restrict a run length of “1” while data is recorded/reproduced, there are such a drawback that when an error correction is carried out, a total number of error data to be corrected is increased, and also errors of not-detectable data are increased. While data is coded, a continuous number of “1” contained in a code word is limited, and then an error correction is carried out inside a coding/decoding process operation. Thus, a recording/reproducing apparatus having a small number of decoding errors is available.
摘要翻译：在数据被记录/再现时不限制游程长度为“1”的编码方法存在这样的缺点：当执行错误校正时，增加要纠正的错误数据的总数，并且还不可检测数据的错误增加。在对数据进行编码的同时，对码字中包含的连续数“1”进行限制，然后在编码/解码处理动作中进行纠错。因此，具有少量解码错误的记录/再现装置是可用的。

10. 发明授权

US06304402B1 Equalizer and magnetically recorded-signal reproducer 失效
标题翻译：均衡器和磁记录信号再现器
公开(公告)号：US06304402B1
公开(公告)日：2001-10-16
申请号：US09637498
申请日：2000-08-11
申请人： Yasutaka Nishida , Seiichi Mita , Naoki Satoh , Yoshiju Watanabe
发明人： Yasutaka Nishida , Seiichi Mita , Naoki Satoh , Yoshiju Watanabe
IPC分类号： G11B503
CPC分类号： G11B5/09 , G11B5/012 , G11B5/035 , G11B20/10009 , G11B2005/0016 , H03H17/06
摘要： The equalizer is capable of generating an equalized output that is compensated in the non-linearity of the signal reproduced by an MR head and a reliable high-density magnetically recorded-signal reproducer. The equalizer of an FIR-type filter structure includes a plurality of delay elements for delaying an input signal by a certain period, a plurality of coefficient processing units provided to input or output taps of the delay elements, and an adder for obtaining the sum of the outputs of the coefficient processing units. The distortion of the reproduced waveform can be corrected by a relatively simple circuit structure by comparing the signal value inputted to the coefficient processing unit from each tap with a predetermined threshold level and changing the signal value and a coefficient value to be multiplied in accordance with the comparison result. Therefore, any one of various existing signal processing systems can be applied to the decoding of reproduced signals of an MR head having the non-linear characteristic.
摘要翻译：均衡器能够产生均衡的输出，该均衡输出以由MR头和可靠的高密度磁记录信号再现器再现的信号的非线性来补偿。 FIR型滤波器结构的均衡器包括用于将输入信号延迟一定周期的多个延迟元件，提供给输入或输出延迟元件抽头的多个系数处理单元，以及用于获得系数处理单元的输出。通过将输入到系数处理单元的每个抽头的系数处理单元的信号值与预定的阈值电平相比较，可以通过相对简单的电路结构来校正再现波形的失真，并且根据该调整信号值改变信号值和要乘以的系数值比较结果。因此，各种现有信号处理系统中的任一种可以应用于具有非线性特性的MR头的再现信号的解码。

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