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。

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：US5093831A

公开(公告)日：1992-03-03

申请号：US362221

申请日：1989-06-06

申请人： Shouichi Serizawa ,  Tokuhiro Tsukiyama ,  Tadashi Haga

发明人： Shouichi Serizawa ,  Tokuhiro Tsukiyama ,  Tadashi Haga

IPC分类号： G06F11/10 ,  H03M7/48 ,  H03M13/00 ,  H03M13/09

CPC分类号： H03M13/09 ,  H03M7/48

摘要： A fast calculation circuit for a cyclic redundancy check code of compressed data having a compressed area and an uncompressed area, the compressed area containing at least a data byte representative of the content of consecutive same data bytes and a data byte representative of the number of consecutive same data bytes. The fast calculation circuit includes a cyclic redundancy check code calculation unit for calculating a cyclic redundancy check code of data in the uncompressed area by using a generating polynominal; a fast calculation matrix unit for storing beforehand a plurality of cyclic redundancy check code calculation results of data contents and consecutive data byte numbers; and a detection unit for detecting the compressed area; wherein when the detection unit detects the compressed area, a cyclic redundancy check code of data in the detected compressed area is calculated by the fast calculation matrix unit, and when the detection unit does not detect the compressed area, a cyclic redundancy check code of data in the uncompressed area is calculated by the cyclic redundancy check code calculation unit.

摘要翻译： 一种用于具有压缩区域和未压缩区域的压缩数据的循环冗余校验码的快速计算电路，所述压缩区域至少包含表示连续相同数据字节的内容的数据字节和表示连续数量字节数的数据字节 相同的数据字节。 快速计算电路包括循环冗余校验码计算单元，用于通过使用生成多项式来计算未压缩区域中的数据的循环冗余校验码; 一种用于预先存储数据内容和连续数据字节数的多个循环冗余校验码计算结果的快速计算矩阵单元; 以及检测单元，用于检测压缩区域; 其中，当检测单元检测到压缩区域时，通过快速计算矩阵单元计算检测压缩区域中的数据的循环冗余校验码，并且当检测单元未检测到压缩区域时，数据的循环冗余校验码 在未压缩区域中由循环冗余校验码计算单元计算。

公开(公告)号：US4758899A

公开(公告)日：1988-07-19

申请号：US799800

申请日：1985-11-20

申请人： Tokuhiro Tsukiyama

发明人： Tokuhiro Tsukiyama

IPC分类号： G06F3/06 ,  G11B20/00 ,  G11B20/10 ,  G11B5/00

CPC分类号： G11B20/00007

摘要： A control device has a data compression control circuit for compressing data and a data buffer for temporarily storing the data to be written on a recording medium. The data transferred from a CPU is compressed and then recorded on the recording medium. Further provided is a buffer discriminating circuit for discriminating the quantity of data stored in the data buffer to control the data compression control circuit so that the data compressing operation and the operation of recording the data on the recording medium may be conducted in parallel while the amount of transferred data in the data buffer is prevented from becoming less than a predetermined quantity.

摘要翻译： 控制装置具有用于压缩数据的数据压缩控制电路和用于临时存储要写入记录介质的数据的数据缓冲器。 从CPU传送的数据被压缩，然后记录在记录介质上。 还提供了一种缓冲鉴别电路，用于鉴别存储在数据缓冲器中的数据量，以控制数据压缩控制电路，使得数据压缩操作和记录在记录介质上的数据的操作可以并行进行， 防止数据缓冲器中传送的数据变得小于预定量。

公开(公告)号：US4866440A

公开(公告)日：1989-09-12

申请号：US129185

申请日：1987-12-07

申请人： Tokuhiro Tsukiyama ,  Yasunori Sagara ,  Kazumi Miyazawa

发明人： Tokuhiro Tsukiyama ,  Yasunori Sagara ,  Kazumi Miyazawa

IPC分类号： G06F5/00 ,  G06T9/00 ,  G11B20/10 ,  H03M7/30 ,  H03M7/46 ,  H04L23/00

CPC分类号： H03M7/46 ,  G06T9/005 ,  H03M7/30

摘要： A data compression and restoration method and an apparatus for realizing same, by which, when identical data patterns appear successively in data information, which may be recorded in a magnetic tape, etc., the data patterns are subjected to a compression operation, the data thus compressed is recorded, and it is restored at the reproduction. When the data patterns appear successively, they are compressed, and the data patterns generated by the compression are subjected to a second compression, after they have been rearranged for the purpose of the second compression. In this way it is possible to record data significantly compressed.

摘要翻译： 一种数据压缩和恢复方法以及用于实现该数据压缩和恢复方法的装置，当数据信息中可以记录在磁带等中的相同数据模式连续出现时，数据模式经受压缩操作，数据 因此被压缩，并且在再现时被恢复。 当数据模式依次出现时，它们被压缩，并且由于压缩产生的数据模式在它们被重新排列以进行第二次压缩之后经受第二次压缩。 以这种方式，可以将数据记录显着压缩。

公开(公告)号：US06950871B1

公开(公告)日：2005-09-27

申请号：US09606050

申请日：2000-06-29

申请人： Shigeo Honma ,  Hiroshi Morishima ,  Tokuhiro Tsukiyama ,  Hiroyuki Matsushima ,  Takashi Oeda ,  Yoji Tomono

发明人： Shigeo Honma ,  Hiroshi Morishima ,  Tokuhiro Tsukiyama ,  Hiroyuki Matsushima ,  Takashi Oeda ,  Yoji Tomono

IPC分类号： G06F17/30 ,  H04L29/06 ,  H04L29/08 ,  G06F15/173

CPC分类号： G06F3/067 ,  G06F3/0604 ,  G06F3/0629 ,  H04L29/06 ,  H04L67/1097 ,  H04L69/329

摘要： In order to construct an integrated storage system by reinforcing collaboration of components or functions of a storage system in which a storage area network (SAN) is used, in a computer system having multiple client computers, multiple various servers, multiple various storages which keep data, and a local area network (LAN) which connects the computers and the servers, a storage area network (SAN) which lies between the servers and storages forms a switched circuit network which is capable of connecting any server and any storage through fiber channel FC switches. The computer system further includes a terminal which is equipped with operation and management software which performs storage management including management of logical volumes in the various storages, data arrangement, error monitoring, management of setting up the FC switches, and backup for data in the storages.

摘要翻译： 为了通过加强使用存储区域网络（SAN）的存储系统的组件或功能的协作来构建集成存储系统，在具有多个客户端计算机的计算机系统中，多个不同的服务器，保持数据的多个存储器 以及连接计算机和服务器的局域网（LAN），位于服务器和存储器之间的存储区域网络（SAN）形成切换电路网络，其能够通过光纤通道FC连接任何服务器和任何存储 开关。 该计算机系统还包括一个终端，该终端配备有执行存储管理的操作和管理软件，包括各种存储器中的逻辑卷的管理，数据安排，错误监视，设置FC交换机的管理，以及备份存储器中的数据 。

公开(公告)号：US4872009A

公开(公告)日：1989-10-03

申请号：US129186

申请日：1987-12-07

申请人： Tokuhiro Tsukiyama ,  Hiroshi Yashiki ,  Osamu Hirose

发明人： Tokuhiro Tsukiyama ,  Hiroshi Yashiki ,  Osamu Hirose

IPC分类号： G11B20/10 ,  G06F5/00 ,  G06T9/00 ,  H03M7/46 ,  H03M7/48

CPC分类号： G06T9/005 ,  H03M7/46

摘要： A method of data compression for recording data on a recording medium such as a magentic tape, a method of data restoration for data which has been compressed for recording, and an apparatus of data compression and restoration prescribe the data to be compressed based on type or value and encode the compression object data, thereby reducing the number of bits necessary to indicate the compression object data. Compression is implemented only for consecutive data fewer in number of repeating consecutive bytes than a certain number, thereby reducing the number of bits necessary to indicate the number of bytes of the consecutive data. A compression mark indicative of compression is appended to the compressed data, consisting of data made by encoding the compression object consecutive data and data indicating the number of bytes of the data, either at the front or rear of the compressed data, whereby an input data string can be compressed drastically and compressed data, even including errors, can be restored.

摘要翻译： 一种用于在诸如磁带之类的记录介质上记录数据的数据压缩方法，用于记录的压缩数据的数据恢复方法以及数据压缩和恢复装置根据类型或类型来规定要压缩的数据 对压缩对象数据进行值和编码，从而减少指示压缩对象数据所需的位数。 压缩仅针对连续数据重复连续字节的数量少于特定数量而实现，从而减少了指示连续数据的字节数所需的位数。 表示压缩的压缩标记被附加到压缩数据上，压缩数据包括通过对压缩对象连续数据进行编码而得到的数据和表示数据字节数的数据，在压缩数据的前面或后面，由此输入数据 字符串可以被大幅压缩，压缩数据，甚至包括错误也可以恢复。