公开(公告)号：US5388016A

公开(公告)日：1995-02-07

申请号：US843213

申请日：1992-02-28

申请人： Sadasaburoh Kanai ,  Hiroyuki Kitajima ,  Toshifumi Nishimura ,  Katsuharu Kakuse ,  Minoru Kosuge

发明人： Sadasaburoh Kanai ,  Hiroyuki Kitajima ,  Toshifumi Nishimura ,  Katsuharu Kakuse ,  Minoru Kosuge

IPC分类号： G06F3/06 ,  G11B15/18 ,  G11B20/12 ,  G11B27/10 ,  G11B27/11 ,  G11B27/32

CPC分类号： G06F3/0601 ,  G11B15/1816 ,  G11B20/1209 ,  G11B27/107 ,  G11B27/11 ,  G11B27/328 ,  G06F2003/0698 ,  G11B2220/20 ,  G11B2220/65 ,  G11B2220/90 ,  G11B2220/913

摘要： A magnetic tape data management method and apparatus is described that reduces the access time for updating and referring to directory data. At the time of accessing data on a magnetic tape loaded in a magnetic tape subsystem, directory data for the magnetic tape is, in response to the completion of the processing of data, recorded in a region located near the place at which the magnetic tape head is positioned at that time, said region constituting a directory data region (DDR). Further, a directory data memory for recording directory data from the magnetic tape is provided in the magnetic tape subsystem, remote from the tape. At the time of accessing data on the magnetic tape loaded in the magnetic tape subsystem, directory data for the magnetic tape processing is, in response to completion of the processing of data, recorded in the directory data memory in the magnetic tape subsystem.

摘要翻译： 描述了一种减少用于更新和参考目录数据的访问时间的磁带数据管理方法和装置。 在访问磁带子系统中装载的磁带上的数据时，磁带的目录数据响应于数据处理的完成而被记录在位于磁带头附近的区域 位于此时，所述区域构成目录数据区域（DDR）。 此外，用于从磁带记录目录数据的目录数据存储器设置在远离磁带的磁带子系统中。 在访问装载在磁带子系统中的磁带上的数据时，磁带处理的目录数据是响应于数据处理完成而被记录在磁带子系统中的目录数据存储器中的。

公开(公告)号：US5235641A

公开(公告)日：1993-08-10

申请号：US668098

申请日：1991-03-12

申请人： Masafumi Nozawa ,  Akinobu Shimada ,  Toshifumi Nishimura ,  Katsuharu Kakuse ,  Tokuhiro Tsukiyama ,  Kiyoshi Yata ,  Yasuhiro Ishii ,  Kazuo Takaragi ,  Yasushi Kuba ,  Fujio Fujita

发明人： Masafumi Nozawa ,  Akinobu Shimada ,  Toshifumi Nishimura ,  Katsuharu Kakuse ,  Tokuhiro Tsukiyama ,  Kiyoshi Yata ,  Yasuhiro Ishii ,  Kazuo Takaragi ,  Yasushi Kuba ,  Fujio Fujita

IPC分类号： G06F12/00 ,  G06F1/00 ,  G06F21/00 ,  G09C1/00

CPC分类号： G06F21/6209 ,  G06F2221/2107

摘要： In an information processing system having an upper rank apparatus and an external storage device which performs transmission and reception of data between the storage device and the upper rank apparatus, at least one of encryption and decryption of the data by use of an algorithm controlled by a desired data key is performed in the external storage device, while generation, encryption and decryption of the data key are performed on the upper rank apparatus side. By this configuration, the burden of the upper rank apparatus is largely reduced and the secrecy of data stored in the external storage device can be surely kept without spoiling the throughput of the whole system.

摘要翻译： 在具有上位装置和外部存储装置的信息处理系统中，在存储装置和上位装置之间执行数据的发送和接收，通过使用由 在外部存储装置中执行期望的数据密钥，而在上位装置侧执行数据密钥的生成，加密和解密。 通过这种配置，大大减少了上位装置的负担，并且可以可靠地保持存储在外部存储装置中的数据的保密性，而不会破坏整个系统的吞吐量。

公开(公告)号：US5163134A

公开(公告)日：1992-11-10

申请号：US304519

申请日：1989-01-31

申请人： Katsuharu Kakuse ,  Kenichi Kageura ,  Takashi Doi

发明人： Katsuharu Kakuse ,  Kenichi Kageura ,  Takashi Doi

IPC分类号： G06F3/06 ,  G11B15/02 ,  G11B19/00 ,  G11B19/04 ,  G11B20/10 ,  G11B20/18

CPC分类号： G11B19/00 ,  G11B19/04 ,  G11B20/10 ,  G11B20/1816

摘要： A magnetic recording subsystem comprises a channel unit, a magnetic recording control unit having a data buffer for temporarily storing data blocks of data transferred from the channel unit and a plurality of magnetic recording units connected to the magnetic recording control unit. When the data is stored into the data buffer, a block number is assigned to each data block. When the data is read from the data buffer and to be stored into a designated magnetic recording unit, the block number supplied from the data buffer and the block number assigned when the data was stored into the data buffer are compared, and then the data is stored into the magnetic recording unit.

摘要翻译： 磁记录子系统包括通道单元，磁记录控制单元，具有用于临时存储从通道单元传送的数据的数据块的数据缓冲器和连接到磁记录控制单元的多个磁记录单元。 当数据被存储到数据缓冲器中时，块号被分配给每个数据块。 当从数据缓冲器读取数据并将其存储到指定的磁记录单元中时，从数据缓冲器提供的块号和将数据存储到数据缓冲器中时分配的块号进行比较，然后将数据 存储到磁记录单元中。

公开(公告)号：US4663752A

公开(公告)日：1987-05-05

申请号：US714917

申请日：1985-03-22

申请人： Katsuharu Kakuse ,  Tokuhiro Tsukiyama

发明人： Katsuharu Kakuse ,  Tokuhiro Tsukiyama

IPC分类号： G11B20/18 ,  G11B7/00 ,  G11B7/005 ,  G11B7/007 ,  G11B19/04 ,  G11B20/12 ,  G11B27/30 ,  G11B7/013

CPC分类号： G11B7/00745 ,  G11B19/04 ,  G11B20/1252 ,  G11B27/3027 ,  G11B2220/20 ,  G11B2220/2537

摘要： In an optical disc apparatus using an optical disc which has a number of sectors for recording coded information therein, a sector mark formed of a special pattern is previously recorded in each sector at the starting position thereof, to correctly read-out information recorded in each sector. In the case where the optical disc is normally operated, a normal sector mark signal corresponding to each sector mark is detected at a fixed time interval. However, the normal sector mark signal may not be detected for some reasons. A circuit is herein disclosed which generates a pseudo sector mark signal synchronized with the normal sector mark signal. When the normal sector mark signal is not detected, the psuedo sector mark signal is generated, and information recorded in a sector is appropriately processed on the basis of the pseudo sector mark signal. Further, this circuit is provided with circuit means for inhibiting the normal sector mark signal and psuedo sector mark signal from being delivered when the pseudo sector mark signal has been generated a predetermined number of times continuously. However, such inhibition is released when the repetition period of the normal sector mark signal is judged to lie within a predetermined range.

摘要翻译： 在使用具有用于记录编码信息的扇区数目的光盘的光盘装置中，在特定图案形成的扇区标记预先记录在其起始位置的每个扇区中，以正确地读出记录在每个扇区中的信息 部门。 在光盘正常操作的情况下，以固定的时间间隔检测对应于每个扇区标记的正常扇区标记信号。 然而，由于某些原因，可能无法检测到正常扇区标记信号。 这里公开了一种生成与正常扇区标记信号同步的伪扇区标记信号的电路。 当没有检测到正常扇区标记信号时，产生伪零区标记信号，并且基于伪扇区标记信号适当地处理记录在扇区中的信息。 此外，该电路设置有电路装置，用于当伪扇区标记信号已经连续生成预定次数时，禁止正常扇区标记信号和伪距扇区标记信号传送。 然而，当正常扇区标记信号的重复周期被判断为在预定范围内时，这种抑制被释放。

公开(公告)号：US4586027A

公开(公告)日：1986-04-29

申请号：US638424

申请日：1984-08-07

申请人： Tokuhiro Tsukiyama ,  Yoshie Kondo ,  Katsuharu Kakuse ,  Shinpei Saba ,  Syoji Ozaki ,  Kunihiro Itoh

发明人： Tokuhiro Tsukiyama ,  Yoshie Kondo ,  Katsuharu Kakuse ,  Shinpei Saba ,  Syoji Ozaki ,  Kunihiro Itoh

IPC分类号： G06F3/06 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  H03M7/48 ,  G06F5/00

CPC分类号： H03M7/48 ,  G11B20/00007

摘要： Method of data compression and restoration wherein an input data string including repetitive data more in number than the specified value is transformed into a data string having a format including the first region where non-compressed data are placed, the second region including a datum representative of a data string section which has undergone the compression process and information indicative of the number of repetitive data, i.e., the length of the data string section, and control information inserted at the front and back of the first region indicative of the number of data included in the first region, said transformed data string being recorded on the recording medium, and, for data reproduction, the first and second regions are identified on the basis of the control information read out on the recording medium so that the compressed data string section is transformed back to the original data string in the form of repetitive data.

摘要翻译： 数据压缩和恢复方法，其中包括数量大于指定值的重复数据的输入数据串被转换成具有格式的数据串，该格式包括放置非压缩数据的第一区域，第二区域包括代表 经历了压缩处理的数据串部分和指示重复数据的数量的信息，即数据串部分的长度，以及插入在第一区域的前后的控制信息，指示包括的数据的数量 在第一区域中，所述变换数据串被记录在记录介质上，并且为了数据再现，基于在记录介质上读出的控制信息来识别第一和第二区域，使得压缩数据串段是 以重复数据的形式转换回原始数据串。