公开(公告)号：US20060080483A1

公开(公告)日：2006-04-13

申请号：US11231155

申请日：2005-09-19

申请人： Kenji Ogasawara ,  Hirofumi Saitoh

发明人： Kenji Ogasawara ,  Hirofumi Saitoh

IPC分类号： G06F13/12

CPC分类号： G11B19/28 ,  G11B19/2054

摘要： Embodiments of the invention provide a disk device and a method of controlling the device which is capable of suppressing peak current, even for serial communication, that is required when initiating rotation of a spindle motor down to a level equivalent to that of parallel communication, without prolonging elapsed time before reaching the steady rotation speed. In one embodiment, an HDD includes a serial communication circuit which executes serial communication with a host, an SPM which rotates a disk, an HDC/MPU which controls the SPM and the serial communication circuit. The HDC/MPU, after shutting down the serial communication circuit once, starts up the serial communication circuit again when rotation speed of the SPM reached the specified standard value, and establishes serial communication with the host by means of the serial communication circuit.

公开(公告)号：US07613525B2

公开(公告)日：2009-11-03

申请号：US11231155

申请日：2005-09-19

申请人： Kenji Ogasawara ,  Hirofumi Saitoh

发明人： Kenji Ogasawara ,  Hirofumi Saitoh

IPC分类号： G11B15/46 ,  G11B5/596 ,  H02P1/00 ,  H02P1/04 ,  G05B11/01 ,  G05B19/18

CPC分类号： G11B19/28 ,  G11B19/2054

摘要： Embodiments of the invention provide a disk device and a method of controlling the device which is capable of suppressing peak current, even for serial communication, that is required when initiating rotation of a spindle motor down to a level equivalent to that of parallel communication, without prolonging elapsed time before reaching the steady rotation speed. In one embodiment, an HDD includes a serial communication circuit which executes serial communication with a host, an SPM which rotates a disk, an HDC/MPU which controls the SPM and the serial communication circuit. The HDC/MPU, after shutting down the serial communication circuit once, starts up the serial communication circuit again when rotation speed of the SPM reached the specified standard value, and establishes serial communication with the host by means of the serial communication circuit.

摘要翻译： 本发明的实施例提供了一种磁盘装置和一种控制该装置的方法，该装置能够抑制即使对于串行通信，当主轴电动机的旋转下降到与并行通信相当的水平时所需的峰值电流，而没有 在达到稳定转速之前延长使用时间。 在一个实施例中，HDD包括执行与主机的串行通信的串行通信电路，旋转盘的SPM，控制SPM的HDC / MPU和串行通信电路。 HDC / MPU在关闭串行通信电路一次之后，当SPM的转速达到规定的标准值时，再次启动串行通信电路，并通过串行通信电路与主机建立串行通信。

公开(公告)号：US20060165264A1

公开(公告)日：2006-07-27

申请号：US11339480

申请日：2006-01-26

申请人： Hirofumi Saitoh ,  Tatsushi Ohyama

发明人： Hirofumi Saitoh ,  Tatsushi Ohyama

IPC分类号： G06K9/00

CPC分类号： G06K9/0061 ,  G06K9/0008 ,  G06K9/00369 ,  G06K9/00664 ,  G06K9/4642

摘要： In a verification apparatus, an image pickup unit picks up an image of an object to be verified. A calculation unit calculates, from the captured object image, a characteristic quantity that characterizes a direction of lines within the object image along a first direction or a characteristic quantity that characterizes the object image as a single physical quantity. Then a region from which data are to be acquired is set by referring to a characteristic quantity of the object image and, from this region, a characteristic quantity that characterizes a direction of lines within the object image along a second direction different from the second direction or a characteristic quantity that characterizes the object image as a single physical quantity is calculated. A verification unit at least verifies the characteristic quantity of the object image against that of a reference image along the second direction.

摘要翻译： 在验证装置中，图像拾取单元拾取要验证的对象的图像。 计算单元从拍摄对象图像计算将沿着第一方向的对象图像内的线的方向或将对象图像的特征量表征为单一物理量的特征量。 然后，通过参照对象图像的特征量来设定要获取数据的区域，并且从该区域，沿着与第二方向不同的第二方向表征对象图像内的线的方向的特征量 或者计算将对象图像表征为单个物理量的特征量。 验证单元至少根据沿着第二方向的参考图像的特征量验证对象图像的特征量。

公开(公告)号：US20050216782A1

公开(公告)日：2005-09-29

申请号：US11090672

申请日：2005-03-25

申请人： Hirofumi Saitoh

发明人： Hirofumi Saitoh

IPC分类号： G06F3/06 ,  G06F11/00 ,  G11B20/18

CPC分类号： G06F11/0793 ,  G06F11/0727 ,  G06F11/0757

摘要： Embodiments of the invention increase the probability of error recovery in error recovery processing. When a reset command is received during an error recovery procedure (ERP), a timer is started in response to the reset command. From the time at which the reset command has been received until the predetermined time prescribed by the timer passes, the ERP step is continued. After the timer expires, the ERP processing stops on the completion of an ERP step M. Additionally, a HDD returns to a host a reset ready, which represents the completion of the reset. Since the ERP is continued even after the reset command is received, it is possible to increase the probability of error recovery.

摘要翻译： 本发明的实施例增加了错误恢复处理中错误恢复的概率。 当在错误恢复过程（ERP）期间接收到复位命令时，响应于复位命令启动定时器。 从已经接收到复位命令的时间到定时器规定的预定时间过去之前，继续执行ERP步骤。 定时器到期后，ERP处理在完成ERP步骤M后停止。另外，HDD向主机返回复位就绪，表示重置完成。 由于即使在接收到复位命令之后继续执行ERP，也可以增加错误恢复的概率。

公开(公告)号：US07664884B2

公开(公告)日：2010-02-16

申请号：US11267539

申请日：2005-11-04

申请人： Atsushi Kanamaru ,  Tadahisa Kawa ,  Hiromi Kobayashi ,  Hirofumi Saitoh

发明人： Atsushi Kanamaru ,  Tadahisa Kawa ,  Hiromi Kobayashi ,  Hirofumi Saitoh

IPC分类号： G06F3/00 ,  G06F5/00 ,  G06F13/12 ,  G06F13/38 ,  G06F13/14 ,  G06F13/36 ,  G06F13/40 ,  G06F13/20 ,  G06F13/00 ,  G06F1/00 ,  G06F1/26 ,  G06F1/32

CPC分类号： G11B19/02 ,  G06F1/3221 ,  G06F1/3268 ,  G06F3/0601 ,  G06F2003/0697 ,  Y02D10/154 ,  Y02D50/20

摘要： Embodiments of the present invention provide a media drive that is intended for reduction in power consumption required for serial communications to/from a host, and a power saving method thereof. In one embodiment, a HDD includes: a cache; a host interface for transferring, to a host, transfer data read out from the cache; a host interface manager that controls the execution of commands so as to generate a transfer unnecessary period during which a command and transfer data need not be exchanged with the host; and a MPU that brings a serial communication part of the host interface into a power save mode during the transfer unnecessary period. The host interface manager determines the optimum data transfer timing of transferring data from the cache to the host on the basis of a transfer rate at which data is transferred to the host, and a read rate at which data is read out from a disk into the cache.

摘要翻译： 本发明的实施例提供了用于降低与主机的串行通信所需的功耗的介质驱动器及其省电方法。 在一个实施例中，HDD包括：高速缓存; 用于向主机传送从高速缓存读出的数据的主机接口; 主机接口管理器，其控制命令的执行，以便产生不需要与主机交换命令和传送数据的转移不必要的周期; 以及在传输不必要的周期期间将主机接口的串行通信部分带入省电模式的MPU。 主机接口管理器根据数据传送到主机的传输速率和数据从磁盘读出的读取速率来确定将数据从高速缓存传送到主机的最佳数据传送定时， 缓存。

公开(公告)号：US07475265B2

公开(公告)日：2009-01-06

申请号：US11227676

申请日：2005-09-14

申请人： Hiroshi Oshikawa ,  Hirofumi Saitoh

发明人： Hiroshi Oshikawa ,  Hirofumi Saitoh

IPC分类号： G06F1/32

CPC分类号： G06F1/325 ,  G06F1/3203 ,  G06F1/3287 ,  Y02D10/171 ,  Y02D50/20

摘要： Embodiments of the invention reduce consumption power of a data storage device. In one embodiment, an HDD according to the embodiment selectively switches a serial interface among other circuits to a power-save mode. The HDD receives a command from a host, and, in a command execution sequence thereof, sets and keeps the serial interface in the power-save mode for at least a partial period of time during which no sending and receiving of data resulting from serial data communication with the host exists. Further, in responding to completion of execution of the command, the HDD switches the serial interface to the power-save mode.

摘要翻译： 本发明的实施例降低数据存储设备的功耗。 在一个实施例中，根据本实施例的HDD选择性地将串行接口与其他电路切换到省电模式。 HDD从主机接收命令，并且在其命令执行顺序中，将串行接口设置并保持在节电模式下至少部分时间段，在此期间不发送和接收由串行数据产生的数据 存在与主机的通信。 此外，在响应命令的执行完成时，HDD将串行接口切换到省电模式。

公开(公告)号：US07373460B2

公开(公告)日：2008-05-13

申请号：US11271397

申请日：2005-11-10

申请人： Hiromi Kobayashi ,  Hirofumi Saitoh ,  Takahiro Saito ,  Tadahisa Kawa ,  Atsushi Kanamaru

发明人： Hiromi Kobayashi ,  Hirofumi Saitoh ,  Takahiro Saito ,  Tadahisa Kawa ,  Atsushi Kanamaru

IPC分类号： G06F12/00

CPC分类号： G06F3/0659 ,  G06F3/0611 ,  G06F3/0656 ,  G06F3/0676

摘要： Embodiments of the present invention provide a media drive capable of improving command processing performance by, when a plurality of commands is queued, shortening seek time and rotational latency, and also effectively making use of the shortened period of time. In one embodiment, a HDD includes a queue capable of storing a plurality of commands, and a queue manager for optimizing the execution order of the plurality of commands on the basis of whether or not the execution of each command requires access to a medium. The queue manager determines the execution order so that medium access processing of accessing a disk for execution, and data transfer processing of transferring data between the HDD and a host, are executed in parallel with each other. For example, read processing and transfer processing are executed in parallel with each other. The read processing is adaptive to read out a read command, data of which does not exist in the cache, from the disk into the cache. The transfer processing is adaptive to transfer a read command, data of which exists in the cache, to the host.

摘要翻译： 本发明的实施例提供一种媒体驱动器，其能够通过在多个命令排队时缩短查找时间和旋转等待时间，并且还有效地利用缩短的时间段来改善命令处理性能。 在一个实施例中，HDD包括能够存储多个命令的队列，以及队列管理器，用于根据每个命令的执行是否需要访问介质来优化多个命令的执行顺序。 队列管理器确定执行顺序，使得访问用于执行的盘的介质访问处理以及在HDD和主机之间传送数据的数据传送处理彼此并行执行。 例如，读取处理和传送处理彼此并行地执行。 读取处理自适应地读出缓存中不存在其数据的读取命令从盘到高速缓存。 传输处理适应于将缓存中存在的数据的读取命令传送到主机。

公开(公告)号：US20070036400A1

公开(公告)日：2007-02-15

申请号：US11390249

申请日：2006-03-28

申请人： Keisuke Watanabe ,  Hirofumi Saitoh

发明人： Keisuke Watanabe ,  Hirofumi Saitoh

IPC分类号： G06K9/00

CPC分类号： G06K9/001 ,  G06K9/6857

摘要： An input unit accepts a fingerprint image of a user. A pre-extraction and categorization unit generates pre-extracted data from the fingerprint image and uses the data to categorize the input fingerprint image into one of multiple groups. A feature extraction unit extracts fingerprint feature data from the fingerprint image by processing methods defined for the respective groups. A feature data matching processing unit matches the fingerprint feature data against fingerprint authentication data registered in a fingerprint authentication database by processing methods defined for the respective groups. An integrated authentication unit authenticates a user with the input fingerprint image based upon a result of matching.

摘要翻译： 输入单元接受用户的指纹图像。 预提取和分类单元从指纹图像生成预提取数据，并使用数据将输入的指纹图像分类成多个组之一。 特征提取单元通过针对各个组定义的处理方法从指纹图像中提取指纹特征数据。 特征数据匹配处理单元通过针对各个组定义的处理方法，将指纹特征数据与登记在指纹认证数据库中的指纹认证数据进行匹配。 集成认证单元基于匹配的结果向用户认证输入的指纹图像。

公开(公告)号：US06249854B1

公开(公告)日：2001-06-19

申请号：US09140616

申请日：1998-08-26

申请人： Ryoji Fukuhisa ,  Hirofumi Saitoh ,  Shoichi Hirashita ,  Minoru Hashimoto

发明人： Ryoji Fukuhisa ,  Hirofumi Saitoh ,  Shoichi Hirashita ,  Minoru Hashimoto

IPC分类号： G06F1200

CPC分类号： G06F3/0613 ,  G06F3/064 ,  G06F3/0655 ,  G06F3/0656 ,  G06F3/0659 ,  G06F3/0676

摘要： The present invention provides, at a lower cost, a highly reliable data reading method and data reading apparatus that can improve backward sequential reading performance. The disk drive is provided with a magnetic disk and a control section having an HDC, a RAM, an MPU controlling the operation of the entire HDD, including control of the HDC, a ROM, and an I/F for connecting to an external host device. The control section executes a backward reading detection step that detects backward reading, a step of receiving a command that reads a block of a first length from a first LBA, a step that reads a block of the first length from the first LBA when backward reading is detected, and a step that pre-fetches a second block from a second LBA smaller than the first LBA; when backward reading is detected, upon completion of the reading of data from the disk, the reading of data predicted to be requested by the next command begins immediately.

摘要翻译： 本发明以更低的成本提供了可以提高向后顺序读取性能的高度可靠的数据读取方法和数据读取装置。 磁盘驱动器设置有磁盘和具有HDC，RAM，控制整个HDD的操作的MPU的控制部分，包括HDC的控制，ROM和用于连接到外部主机的I / F 设备。 控制部执行检测反向读取的反向读取检测步骤，从第一LBA接收读取第一长度的块的命令的步骤，从后面读取时从第一LBA读取第一长度的块的步骤 以及从小于第一LBA的第二LBA预取第二块的步骤; 当检测到反向读取时，在从盘读取数据完成后，立即开始预测下一个命令请求的数据的读取。

公开(公告)号：US07899216B2

公开(公告)日：2011-03-01

申请号：US11377652

申请日：2006-03-17

申请人： Keisuke Watanabe ,  Tatsuya Masuda ,  Tatsushi Ohyama ,  Hirofumi Saitoh ,  Yasunari Takasaki ,  Masaya Okumura

发明人： Keisuke Watanabe ,  Tatsuya Masuda ,  Tatsushi Ohyama ,  Hirofumi Saitoh ,  Yasunari Takasaki ,  Masaya Okumura

IPC分类号： G06K9/00

CPC分类号： G06K9/00026

摘要： In order to acquire a suitable fingerprint image by correcting an elongated fingerprint image, a line sensor acquires fingerprint image as a plurality of line-shaped images. A computation unit computes a similarity value by use of an evaluation function for evaluating the degree of similarity between the line-shaped images. The similarity value represents the degree of similarity between a first line-shaped image and a second line-shaped image which serve as a similarity evaluation target and are included in the plurality of the line-shaped image. A compression unit compresses the first line-shaped image and the second line-shaped image when the similarity value is equal to or larger than a predetermined threshold value to generate a new line-shaped image. A generation unit generates the entire fingerprint image by combining the new line-shaped image with the other line-shaped images.

摘要翻译： 为了通过校正细长的指纹图像来获得合适的指纹图像，线传感器获取指纹图像作为多个线状图像。 计算单元通过使用用于评估线状图像之间的相似度的评估函数来计算相似度值。 相似度值表示作为相似性评价对象的第一线状图像和第二线状图像之间的相似度，并且包括在多个线状图像中。 当相似度值等于或大于预定阈值时，压缩单元压缩第一线状图像和第二线状图像，以生成新的线形图像。 生成单元通过将新的线状图像与其他线状图像组合来生成整个指纹图像。