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    Cache system adopting an LRU system
    3.
    发明公开
    Cache system adopting an LRU system 失效
    采用LRU系统的缓存系统

    公开(公告)号：EP0452991A3

    公开(公告)日：1992-04-15

    申请号：EP91110603.7

    申请日：1986-05-28

    Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Computer Engineering Corporation

    Inventor： Furuya, Akihiko, c/o Patent Division ,  Kanamaru, Kouiti, c/o Patent Division ,  Inoue, Junichi

    IPC: G06F12/08 ,  G06F12/12

    CPC classification number: G06F3/0601 ,  G06F11/1415 ,  G06F12/0866 ,  G06F12/126 ,  G06F2003/0691 ,  G06F2212/312

    Abstract: The present invention provides a cache system comprising a cache memory in which the number of write cycles to a disk is decreased by using write command receiving bits in the entries of a directory memory (35) and by using a specified write instruction designation bit in the W-command in such a way, that in the case of a specified W-command it is checked if there are N or more entries whose write command receiving bits are set, i.e. if there are N or more blocks which have been written in cache memory but not yet in the disk, so that, if a cache hit is detected in the case of the disk write command whose specified write construction designation bit is set, the corresponding write data is registered only in the cache if the number of blocks not written in the disk is smaller than N. In this way a disk write operation is always performed in response to a disk write instruction from a host system, even in the case that the cache hit occurs.

    Abstract translation: 本发明提供一种包括高速缓冲存储器的高速缓冲存储器系统，其中通过使用目录存储器（35）的条目中的写入命令接收位并通过使用在该目录存储器（35）中的指定的写入指令指定位来减少写入磁盘的周期的次数 W命令，在指定的W命令的情况下，检查是否有写入命令接收比特被设置的N个或更多个条目，即，如果N个或更多个块已被写入缓存 存储器中，但尚未存在于磁盘中，因此，如果在设置了指定的写入结构指定位的磁盘写入命令的情况下检测到缓存命中，则相应的写入数据仅在缓存中注册，如果块的数量不是 写入磁盘的内存小于N.这样，即使在发生缓存命中的情况下，总是响应来自主机系统的磁盘写入指令执行磁盘写入操作。

    Recorded data reproducing apparatus
    5.
    发明公开
    Recorded data reproducing apparatus 失效
    Anordnung zur Wiedergabe von aufgezeichneten Daten。

    公开(公告)号：EP0255036A2

    公开(公告)日：1988-02-03

    申请号：EP87110625.8

    申请日：1987-07-22

    Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Computer Engineering Corporation

    Inventor： Kaida, Katsuhiko c/o Patent Division ,  Asai, Kenji

    IPC: G11B20/10 ,  G11B5/012 ,  G11B5/596

    CPC classification number: G11B20/10027 ,  G11B20/10 ,  G11B20/10009

    Abstract: A recorded data reproducing apparatus according to this invention comprises a data pulse generation section (l0 to l5), a peak detection section (l7 to l9) and a control section (20 to 22). The data pulse generation section (l0 to l5) reads out data written on the cylinder of a recording medium on which a magnetic head is currently positioned. According to received gain data, the data pulse generation section (l0 to l5) amplifies a signal corresponding to the readout data, and selectively generates data pulse sequence based on the amplified signal. When the amplified signal corresponds to servo data, the peak detection section (l7 to l9) detects the peak value of the amplified signal. The control section (20 to 22) determines whether or not the magnitude of the detected peak value is nearly equal to a predetermined value. If the determination is nega­tive, the control section (20 to 22) refers to a gain data table to determine a change amount of the gain data, and supplies the gain data updated based on the change amount to the data pulse generation section (l0 to l5).

    Abstract translation: 根据本发明的记录数据再现装置包括数据脉冲产生部分（10至15），峰值检测部分（17至19）和控制部分（20至22）。 数据脉冲发生部分（10至15）读出写入磁头当前位于其上的记录介质的圆筒上的数据。 根据接收到的增益数据，数据脉冲发生部分（10至15）放大对应于读出数据的信号，并根据放大的信号有选择地产生数据脉冲序列。 当放大的信号对应于伺服数据时，峰值检测部分（17至19）检测放大信号的峰值。 控制部（20〜22）判断检测出的峰值的大小是否接近于规定值。 如果确定为否定，则控制部（20〜22）参照增益数据表来确定增益数据的变化量，并将根据变化量更新的增益数据提供给数据脉冲生成部（10〜 L5）。

    Cache system adopting an LRU system, and magnetic disk controller incorporating it
    6.
    发明公开
    Cache system adopting an LRU system, and magnetic disk controller incorporating it 失效
    高速缓存装置，其具有LRU方法，以及与这样的布置磁盘控制装置。

    公开(公告)号：EP0203601A2

    公开(公告)日：1986-12-03

    申请号：EP86107284.1

    申请日：1986-05-28

    Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Computer Engineering Corporation

    Inventor： Furuya, Akihiko ,  Kanamaru, Kouiti ,  Inoue, Junichi

    IPC: G06F12/08 ,  G06F12/12 ,  G06F3/06

    CPC classification number: G06F3/0601 ,  G06F11/1415 ,  G06F12/0866 ,  G06F12/126 ,  G06F2003/0691 ,  G06F2212/312

    Abstract: According to a magnetic disk controller incorporating a disk cache system, an arbitrary LRU value and a resident bit for inhibiting replacement of a corresponding block are added to a read/write command. Each entry of a directory memory (35 1 ) has a disk block address field, an LRU counter for storing the arbitrary LRU value, a write command receiving bit field representing non- writing of write data in the disk unit, the write data being accessed by the host system, a resident bit field for inhibiting replacement of the corresponding block, and a disk drive identifier field (LUN) representing the corresponding magnetic disk drive unit (10, through 10 4 ). The LRU setting value added to the read/write command is registered in the LRU counter field of the entry corresponding to the block to be replaced. If the number of data is smaller than a maximum number of blocks to be written in the disk unit, writing is performed for the corresponding block in the cache memory. The resident bit of the entry to be replaced is set/reset in response to the read instruction. If a read error occurs, the cache block to be replaced is divided into subunits on the basis of a sector next to that the number of which is read, a start sector fo the disk area data which is to be transferred to the host system, and a last sector thereof. A transfer start cache address, the number of transfer sectors, and a data transfer direction control code are produced for each one of the subunits of the cache block to be replaced. The directory memory is commonly used by a plurality fo magnetic disk units.

    Abstract translation: 。根据磁盘控制器装有一个磁盘高速缓存系统以任意LRU值和居民位抑制用于替换的相应的块被添加到一个读/写命令。 一个目录存储器（351）中的每个条目具有盘块地址字段以LRU计数器，用于存储任意LRU值，表示在该磁盘单元的写入数据的非写入的写入命令接收位字段，写入数据被访问的 主机系统，居民位字段用于抑制替换对应的块的，和盘驱动器标识符字段（LUN）表示对应的磁盘驱动器单元（101〜104）。 LRU的设置值加到在该条目对应于所述块的LRU计数器字段所登记的读/写命令被替换。 如果数据的数目大于要被写入盘的单位块的最大数量时，执行写入在缓存存储器中的相应块。 要替换的条目的居民位响应的读取指令置位/复位。 如果发生读取错误的，要被替换的缓存块分为亚单位部门的旁边没有被读取的所有数的基础上，开始扇区FO的磁盘区域的数据所有这一切都将被传输到主机系统， 及其负载扇区。 传送开始高速缓存地址，传送的扇区数，以及一个数据传送方向控制码产生针对高速缓存块的所述子单元中的每一个被替换。 目录存储器通常用于由多个FO磁盘装置。

    Card-shaped electronic device
    8.
    发明公开
    Card-shaped electronic device 失效
    卡形电子设备

    公开(公告)号：EP0999492A2

    公开(公告)日：2000-05-10

    申请号：EP00101586.6

    申请日：1992-06-19

    Applicant: KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA COMPUTER ENGINEERING CORPORATION

    Inventor： Kaji, Koichi ,  Inoue, Kanji

    IPC: G06F1/16 ,  H05K5/02

    CPC classification number: G06F1/1616 ,  G06F1/1637 ,  G06F1/1656 ,  G06F1/1679 ,  G06F1/1683 ,  G06F1/183

    Abstract: A rectangular flat box-like main body of the card-shaped electronic device can be inserted into and taken out of an electronic apparatus in a given insertion direction. The main body has a pair of lateral sides extending in the insertion direction. A pair of shield plates (154) are fixed to the main body to cover the upper and lower surfaces of the main body. Each shield plate is formed of a metal and includes a bent portion which is fitted on a lateral side of the main body and constitutes a conductive portion (160) for conducting the shield plates with the electronic apparatus when the main body is loaded in the electronic apparatus.

    Abstract translation: 卡形电子设备的矩形扁平盒状主体可以在给定的插入方向上插入电子设备并从电子设备中取出。 主体具有沿插入方向延伸的一对侧边。 一对屏蔽板（154）被固定到主体以覆盖主体的上表面和下表面。 每个屏蔽板由金属形成并且包括弯曲部分，所述弯曲部分装配在主体的横向侧上并且构成用于当主体装载到电子装置中时用电子装置引导屏蔽板的导电部分（160） 仪器。

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