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。

公开(公告)号：US5406534A

公开(公告)日：1995-04-11

申请号：US191369

申请日：1994-02-03

申请人： Yuji Hisakado ,  Isao Satoh ,  Yuji Takagi ,  Motoshi Ito

发明人： Yuji Hisakado ,  Isao Satoh ,  Yuji Takagi ,  Motoshi Ito

IPC分类号： G11B7/0045 ,  G11B20/18 ,  G11B17/22 ,  G11B7/00

CPC分类号： G11B20/1883 ,  G11B7/0045 ,  G11B2220/20

摘要： An optical disk apparatus for an optical disk having two sides for which data can be simultaneously recorded. Each of the two sides includes a spare area for alternative recording. In the optical disk apparatus, a series of data to be recorded is distributed into first data for the first one of the two sides and second data for the second one of the two sides. The apparatus of this invention detects any defective sector into which data cannot be recorded which occurs in either one or both sides during the simultaneous recording. If there is a defective sector in one side, an alternative recording process is performed for alternatively recording data that was to be recorded into the detected defective sector, and data to be recorded into a sector in the other side corresponding to the defective sector, into alternative sectors in the spare areas of the two sides, respectively. Also, defect information relating to the defective sector is recorded into a predetermined area of the optical disk. When the first data and the second data are reproduced, the first and second data are integrated and rearranged, so as to reproduce the series of data.

摘要翻译： 一种用于光盘的光盘装置，具有可以同时记录数据的两侧。 双方各有一个备用地区供备用录音。 在光盘装置中，要记录的一系列数据被分配到两侧的第一个的第一数据和两侧的第二个的第二数据中。 本发明的装置在同时记录期间检测出在一侧或两侧不能记录数据的缺陷扇区。 如果在一侧存在缺陷扇区，则执行备选记录处理，以备选记录要被记录到检测到的缺陷扇区中的数据，以及要记录到与缺陷扇区相对应的另一侧的扇区中的数据， 分别在双方备用地区的替代行业。 此外，与缺陷扇区相关的缺陷信息被记录在光盘的预定区域中。 当第一数据和第二数据被再现时，第一和第二数据被整合和重新排列，以再现一系列数据。