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    Information retrieval apparatus for searching target literature data from an information recording medium, including reuse of past retrieving results
    8.
    发明授权
    Information retrieval apparatus for searching target literature data from an information recording medium, including reuse of past retrieving results 失效
    信息检索装置，用于从信息记录介质搜索目标文献数据，包括重用过去的检索结果

    公开(公告)号：US5457794A

    公开(公告)日：1995-10-10

    申请号：US49734

    申请日：1993-04-19

    申请人： Yasushi Azumatani ,  Isao Satoh ,  Yoshihisa Fukushima ,  Yuji Takagi ,  Hiroshi Hamasaka ,  Yuji Hisakado

    发明人： Yasushi Azumatani ,  Isao Satoh ,  Yoshihisa Fukushima ,  Yuji Takagi ,  Hiroshi Hamasaka ,  Yuji Hisakado

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30985 ,  G06F17/30457 ,  Y10S707/99932 ,  Y10S707/99933

    摘要： The present invention relates to an information retrieval apparatus for retrieving large quantities of the document files stored in the information recording medium by the successive matched comparison between the character string of a target and the character string in the coded document. When the retrieving result of the document file retrieved in the past is stored within the information recording medium together with the retrieving conditions and the document file is retrieved again with the same retrieving conditions, the information retrieval apparatus of the present invention makes it unnecessary to retrieve the document file itself by the reuse of the past retrieving results if the latest retrieved date and time are newer than the recording date and time of the document file so as to shorten the retrieving time.

    摘要翻译： 信息检索装置技术领域本发明涉及一种信息检索装置，用于通过目标字符串与编码文档中的字符串之间的连续匹配比较来检索存储在信息记录介质中的大量文档文件。 当将过去检索到的文档文件的检索结果与检索条件一起存储在信息记录介质中并且以相同的检索条件再次检索文档文件时，本发明的信息检索装置使得不必检索 如果最新检索的日期和时间比文档文件的记录日期和时间更新，则通过重新使用过去的检索结果来缩短文档文件本身，以缩短检索时间。

    Information recording/reproducing apparatus for writing on and reading from a rewritable optical disk have tracks divided into a plurality of sectors
    9.
    发明授权
    Information recording/reproducing apparatus for writing on and reading from a rewritable optical disk have tracks divided into a plurality of sectors 失效
    用于在可重写光盘上写入和读取的信息记录/再现装置具有分成多个扇区的轨道

    公开(公告)号：US5214626A

    公开(公告)日：1993-05-25

    申请号：US753886

    申请日：1991-09-03

    申请人： Isac Satoh ,  Yoshihisa Fukushima ,  Yuji Takagi ,  Yasushi Azumatani ,  Hiroshi Hamasaka

    发明人： Isac Satoh ,  Yoshihisa Fukushima ,  Yuji Takagi ,  Yasushi Azumatani ,  Hiroshi Hamasaka

    IPC分类号： G11B7/085 ,  G11B7/0045 ,  G11B19/02 ,  G11B20/10

    CPC分类号： G11B19/02 ,  G11B20/10527 ,  G11B7/0045

    摘要： An information recording/reproducing apparatus is suitable for writing on and reading from a rewritable optical disk signals having a time-based continuity attribute such as video signals and audio signals. The optical disk has a plurality of tracks each divided into sectors. The apparatus has a RAM for storing data externally supplied, and first and second address counters for generating addresses for writing into and reading from the RAM, respectively. The apparatus also has a track-jump detector circuit for detecting the occurrence of a track jump of an optical head while the head is writing on the disk. When a track jump is detected, a laser driving circuit stops actuating the head such that the writing operation is halted, and a track-jump address latch circuit stores an address of a track-jump occurring sector. Based on the address stored in the track-jump address latch circuit and a track address where the head is actually is, the head is returned to the sector where the track jump occurred. Then, under control of a CPU, the second address counter again generates addresses at which the RAM stores data which should have been written on the track-jump occurring sector from its leading position. Thus, even if a track jump occurs, information having a time-based continuity attribute is recorded without any data loss.

    摘要翻译： 信息记录/再现装置适用于写入和读取具有时间连续性属性（诸如视频信号和音频信号）的可重写光盘信号。 光盘具有分成扇区的多个轨迹。 该装置具有用于存储外部提供的数据的RAM，以及分别用于产生写入RAM和从RAM读取的地址的第一和第二地址计数器。 该装置还具有轨迹跳跃检测器电路，用于在磁头写入磁盘时检测光学头的轨道跳跃的发生。 当检测到磁道跳跃时，激光驱动电路停止启动磁头，使得写入操作停止，并且轨道跳转地址锁存电路存储轨道跳跃发生扇区的地址。 基于存储在轨道跳转地址锁存电路中的地址和磁头实际上的轨道地址，头部返回到发生轨道跳跃的扇区。 然后，在CPU的控制下，第二地址计数器再次产生地址，RAM将存储应该从其引导位置写入轨道跳跃发生扇区的数据。 因此，即使发生轨道跳跃，记录具有基于时间的连续性属性的信息，而没有任何数据丢失。