公开(公告)号：US5179561A

公开(公告)日：1993-01-12

申请号：US782720

申请日：1991-10-28

申请人： Nobuyoshi Izawa ,  Hiroki Arakawa

发明人： Nobuyoshi Izawa ,  Hiroki Arakawa

IPC分类号： G06F11/08 ,  G06F11/267 ,  H03M13/51

CPC分类号： H03M13/51 ,  G06F11/085 ,  G06F11/2215

摘要： A totally self-checking checker checks the faults of a logical circuit and also checks faults inside itself. The totally self-checking checker does not require a large number of gate circuits and minimizes the number of test code words that are used. The code words, of the code word sets to be used, are less than half of all the code words of code since the bits of code Y are divided into M disjoint partial sets.

摘要翻译： 完全自检检查器检查逻辑电路的故障，并检查自身内部的故障。 完全自检检查器不需要大量的门电路，并且最小化使用的测试代码字的数量。 由于代码Y的位被划分成M个不相交的部分集，因此要使用的代码字集合的代码字小于代码的所有代码字的一半。

公开(公告)号：US5936794A

公开(公告)日：1999-08-10

申请号：US543996

申请日：1995-10-17

申请人： Makoto Mizukami ,  Nobuyoshi Izawa ,  Kikuji Katoh ,  Yoshihiro Isomura ,  Yoshihiro Sako

发明人： Makoto Mizukami ,  Nobuyoshi Izawa ,  Kikuji Katoh ,  Yoshihiro Isomura ,  Yoshihiro Sako

IPC分类号： G06F3/06 ,  G11B17/22 ,  G11B27/00 ,  G11B15/68

CPC分类号： G11B17/225 ,  G11B27/002 ,  G11B17/228 ,  G11B2220/20 ,  G11B2220/41

摘要： A media library system capable of carrying out an access to each recording medium in very short time. A media exchange operation is controlled such that the storage cells of the storehouse are divided into at least two groups arranged in an order of average distances with respect to the media drive, including a first group with a shortest average distance with respect to the media drive, and when the previously used recording medium was mounted on the media drive from the first group, the previously used recording medium is stored in the first group, whereas when the previously used recording medium was mounted on the media drive from one group other than the first group, one recording medium with a lowest utilization frequency among an adjacent group of that one group having a shorter average distance with respect to the media drive than that one group is moved from that adjacent group to that one group and then the previously used recording medium is stored in that adjacent group.

摘要翻译： 一种媒体库系统，能够在非常短的时间内对每个记录介质进行访问。 控制媒体交换操作，使得仓库的存储单元被划分为相对于介质驱动器以平均距离的顺序排列的至少两个组，包括相对于介质驱动器具有最短平均距离的第一组 ，并且当先前使用的记录介质从第一组安装在介质驱动器上时，先前使用的记录介质被存储在第一组中，而当先前使用的记录介质从除了 第一组，具有相对于介质驱动器的平均距离较短的该组的相邻组中具有最低利用频率的一个记录介质，而不是一组从该相邻组移动到该组，然后是先前使用的记录 介质存储在该相邻组中。

公开(公告)号：US5598385A

公开(公告)日：1997-01-28

申请号：US349089

申请日：1994-12-02

申请人： Makoto Mizukami ,  Shigetaro Iwatsu ,  Masao Sakai ,  Masahiro Ueno ,  Nobuyoshi Izawa ,  Kikuji Katou

发明人： Makoto Mizukami ,  Shigetaro Iwatsu ,  Masao Sakai ,  Masahiro Ueno ,  Nobuyoshi Izawa ,  Kikuji Katou

IPC分类号： G11B17/22 ,  G11B15/68

CPC分类号： G11B17/22

摘要： A media library system capable of reducing a time and an average moving distance of the media carrying unit required for exchanging the recording media. The system includes a storehouse having a plurality of storage cells for storing a plurality of recording media, a media driving unit for executing data read/write operation with respect to the recording media, and a media carrying unit for carrying the recording media between the storehouse and the media driving unit, so as to exchange a previously used recording medium mounted on the media driving unit with a new recording medium stored in the storehouse. The media exchange operation of the media carrying unit is controlled such that the storage cells of the storehouse are divided into at least two groups arranged in an order of average distances with respect to the media driving unit, including a first group with a shortest average distance with respect to the media driving unit and a last group with a longest average distance, and at least one vacant cell not storing any recording medium is secured among the storage cells of the first group after the media exchange operation is completed.

摘要翻译： 一种媒体库系统，其能够减少用于更换记录介质所需的媒体传送单元的时间和平均移动距离。 该系统包括具有用于存储多个记录介质的多个存储单元的存储器，用于对记录介质执行数据读/写操作的介质驱动单元，以及用于在仓库之间承载记录介质的介质承载单元 和介质驱动单元，以便用存储在仓库中的新的记录介质来更换安装在介质驱动单元上的先前使用的记录介质。 控制媒体传送单元的介质交换操作，使得仓库的存储单元被划分为相对于介质驱动单元以平均距离的顺序排列的至少两个组，包括具有最短平均距离的第一组 相对于媒体驱动单元和具有最长平均距离的最后一个组，并且在媒体交换操作完成之后，在第一组的存储单元中确保至少一个不存储任何记录介质的空闲单元。

公开(公告)号：US4833665A

公开(公告)日：1989-05-23

申请号：US65839

申请日：1987-06-23

申请人： Kenji Tokumitsu ,  Takashi Doi ,  Michio Miyazaki ,  Yuji Yamane ,  Nobuyoshi Izawa ,  Toru Takeda

发明人： Kenji Tokumitsu ,  Takashi Doi ,  Michio Miyazaki ,  Yuji Yamane ,  Nobuyoshi Izawa ,  Toru Takeda

IPC分类号： G06F3/06 ,  G06F3/08 ,  G06F11/14 ,  G11B20/10 ,  G11B20/18

CPC分类号： G11B20/1883 ,  G11B2020/183 ,  G11B2220/20

摘要： Method for controlling information recording in an information recording apparatus which includes a rewritable information record medium containing a data record area having a plurality of data recording blocks and an alternative area in which data to be written into a defective block in the data record area is written, and writing and reading of data to and from the blocks and erasing of data may be carried out, wherein, data is written into the respective blocks in the data record area on the information record medium, and if a data record error is detected, data to be written into the defect block is written into a block of the alternative area. When data is subsequently rewritten, contents of all blocks in the data record area to be rewritten, including the block previously determined to be defective, are erased and the new data is rewritten, and the content of the alternative area is erased. If a data record error is detected after rewriting, the data to be written into the defect block is written into a block in the alternative area.

摘要翻译： 一种用于控制信息记录装置中的信息记录的方法，该信息记录装置包括可重写信息记录介质，该可重写信息记录介质包含具有多个数据记录块的数据记录区域和写入数据记录区域中的缺陷块的数据被写入的备用区域 并且可以执行将数据写入数据和从数据块读取和擦除数据，其中数据被写入信息记录介质上的数据记录区域中的各个块，并且如果检测到数据记录错误， 要写入缺陷块的数据被写入替代区域的块中。 当随后重写数据时，将要重新写入的数据记录区域中的所有块的内容（包括先前确定为有缺陷的块）的内容被擦除，并且重写新的数据，并且擦除替代区域的内容。 如果在重写后检测到数据记录错误，则要写入缺陷块的数据被写入替代区域中的块。