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1. 发明授权

US5537636A File management system for a partially rewritable storage medium where file management information is created in a rewritable zone based on medium management information in a read only zone 失效
标题翻译：用于可重写存储介质的文件管理系统，其中基于只读区域中的介质管理信息在可重写区域中创建文件管理信息
公开(公告)号：US5537636A
公开(公告)日：1996-07-16
申请号：US411066
申请日：1995-03-27
申请人： Yoshiaki Uchida , Kenichi Utsumi , Masahiro Nakada
发明人： Yoshiaki Uchida , Kenichi Utsumi , Masahiro Nakada
IPC分类号： G06F3/06 , G06F12/00 , G11B7/00 , G11B7/30 , G06F17/00
CPC分类号： G06F3/0601 , G06F2003/0697 , G11B2220/211
摘要： A file management system for a partially rewritable single storage medium increases a Rewritable Zone and an unrewritable Read Only Zone, where a desired number of files and pieces of medium management information, including management information for respective files, are written when the Read Only Zone is manufactured. The file management system comprises a reading device and a creating device. The reading device reads the medium management information written in the Read Only Zone upon commencing the use of the storage medium. The creating device creates, in the Rewritable Zone, file management information necessary for using the storage medium based on the medium management information read from the reading device, according to the usage status of the storage medium.
摘要翻译：用于部分可重写单个存储介质的文件管理系统增加了可重写区域和不可重写的只读区域，其中当只读区域是只读区域时，写入期望数量的文件和介质管理信息，包括各个文件的管理信息，制造。文件管理系统包括读取装置和创建装置。读取装置在开始使用存储介质时读取写入只读区中的介质管理信息。创建设备根据存储介质的使用状态，在可重写区域中创建基于从读取设备读取的介质管理信息使用存储介质所需的文件管理信息。

2. 发明授权

US5617393A Optical disk having an erased-state indicator and optical disk apparatus for reducing frequency of disk erasing operation 失效
标题翻译：具有擦除状态指示器的光盘和用于减少光盘擦除操作频率的光盘装置
公开(公告)号：US5617393A
公开(公告)日：1997-04-01
申请号：US365169
申请日：1994-12-28
申请人： Satoshi Itami , Masaru Nakahara , Masahiro Nakada , Hiroshi Suzuki , Kenichi Utsumi
发明人： Satoshi Itami , Masaru Nakahara , Masahiro Nakada , Hiroshi Suzuki , Kenichi Utsumi
IPC分类号： G11B7/00 , G06F3/06 , G11B7/0037 , G11B7/004 , G11B7/0055 , G11B7/006 , G11B7/007 , G11B11/10 , G11B11/105 , G11B19/00 , G11B19/02 , G11B20/10 , G11B20/12
CPC分类号： G06F3/0601 , G06F3/061 , G06F3/0626 , G06F3/0652 , G06F3/0658 , G06F3/0677 , G11B19/00 , G11B19/02 , G11B20/1217 , G11B7/0055 , G11B7/006 , G11B7/00736 , G06F2003/0697 , G11B11/10582 , G11B11/10595 , G11B2020/1232 , G11B2020/1285 , G11B2020/1297 , G11B2220/2537 , G11B7/0037 , G11B7/007
摘要： An optical disk includes a user accessible area having a plurality of blocks and flag data recorded on the optical disk. The flag data indicates whether or not each of the blocks is in an erased state in which there is no recorded data. A flag area stores the flag data, and area data indicating that the optical disk has the flag area is recorded on the optical disk.
摘要翻译：光盘包括具有多个块的用户可访问区域和记录在光盘上的标志数据。标志数据指示每个块是否处于没有记录数据的擦除状态。标志区域存储标志数据，并且指示光盘具有标志区域的区域数据被记录在光盘上。

3. 发明授权

US5982886A Unauthorized use preventing method for optical disks, optical disk having unauthorized use prevention function, and optical disk apparatus 失效
标题翻译：未经授权的光盘防止方法，具有未经授权的使用防止功能的光盘以及光盘装置
公开(公告)号：US5982886A
公开(公告)日：1999-11-09
申请号：US730654
申请日：1996-10-11
申请人： Satoshi Itami , Kenichi Utsumi , Masahiro Nakada , Hiroshi Suzuki , Kazunori Naito , Kazuo Nakashima , Toshikatsu Narumi , Masaru Nakahara
发明人： Satoshi Itami , Kenichi Utsumi , Masahiro Nakada , Hiroshi Suzuki , Kazunori Naito , Kazuo Nakashima , Toshikatsu Narumi , Masaru Nakahara
IPC分类号： G06F1/00 , G06F21/10 , G06F21/80 , G11B7/0037 , G11B20/00 , G11B20/12 , G11B23/28 , H04L9/00 , G11B7/013
CPC分类号： G11B23/284 , G06F21/10 , G06F21/80 , G11B20/00086 , G11B20/0021 , G11B20/00557 , G11B20/00615 , G11B20/0092 , G11B20/00927 , G11B20/00949 , G11B7/0037 , G06F2211/007 , G11B2020/1259
摘要： In a method for preventing unauthorized use of a recording medium having a user accessible area and a user inaccessible area, first information is read from the user inaccessible area of the recording medium. The first information is compared with second information concerning a true recording medium (lawfully produced copy). It is then concluded that the recording medium is the true recording medium when the first information corresponds to the second information.
摘要翻译：在防止未经授权使用具有用户可访问区域和用户不可访问区域的记录介质的方法中，从记录介质的用户不可访问区域读取第一信息。将第一信息与关于真实记录介质（合法制作的副本）的第二信息进行比较。然后得出结论，当第一信息对应于第二信息时，记录介质是真实记录介质。

4. 发明授权

US5357431A Character string retrieval system using index and unit for making the index 失效
标题翻译：字符串检索系统使用索引和单位制作索引
公开(公告)号：US5357431A
公开(公告)日：1994-10-18
申请号：US8810
申请日：1993-01-25
申请人： Masahiro Nakada , Kenichi Utsumi , Takashi Tsubokura , Masaru Nakahara , Satoshi Itami , Hiroshi Suzuki , Kyouko Miyabe , Satoshi Komura
发明人： Masahiro Nakada , Kenichi Utsumi , Takashi Tsubokura , Masaru Nakahara , Satoshi Itami , Hiroshi Suzuki , Kyouko Miyabe , Satoshi Komura
IPC分类号： G06F17/30 , G06F15/38
CPC分类号： G06F17/30985 , Y10S707/99936
摘要： A character string retrieval system retrieves a character string corresponding to a retrieval key input thereto from a text file including a plurality of characters. The system includes an index indicating position data identifying a position of each of characters in the text file and indicating next character data identifying either a character or a character string formed of a plurality of characters arranged next to each of the characters in the text file, a selecting unit for selecting a first character from characters forming the character string corresponding to the retrieval key, a determining unit for determining, with reference to said index, whether or not a character or a character string next to the first character, selected by said selecting unit, in the retrieval key is equal to a character or a character string identified by the character data corresponding to the first character; and output unit for outputting a retrieval result when said determining unit determines that a character or a character string next to the first character in the retrieval key is equal to a character or a character string identified by the character data corresponding to the first character, the retrieval result being obtained based on the position data corresponding to the first character in said index.
摘要翻译：字符串检索系统从包括多个字符的文本文件中检索与其输入的检索关键字对应的字符串。该系统包括指示位置数据的索引，该位置数据标识文本文件中每个字符的位置，并指示识别由安排在文本文件中的每个字符旁边的多个字符组成的字符或字符串的下一个字符数据，选择单元，用于从形成与检索关键字相对应的字符串的字符中选择第一个字符;确定单元，用于参考所述索引确定由所述索引选择的第一个字符旁边的字符或字符串，在检索关键字中的选择单元等于由对应于第一字符的字符数据识别的字符或字符串; 以及当所述确定单元确定检索关键字中的第一字符旁边的字符或字符串等于由与第一字符相对应的字符数据标识的字符或字符串时，输出检索结果的输出单元，基于与所述索引中的第一个字符相对应的位置数据获得检索结果。

5. 发明授权

US5777965A Optical disk having an erased-state indicator and optical disk apparatus for reducing frequency of disk-erasing operations 失效
标题翻译：具有擦除状态指示器的光盘和用于减少磁盘擦除操作频率的光盘装置
公开(公告)号：US5777965A
公开(公告)日：1998-07-07
申请号：US683174
申请日：1996-07-18
申请人： Satoshi Itami , Masaru Nakahara , Masahiro Nakada , Hiroshi Suzuki , Kenichi Utsumi
发明人： Satoshi Itami , Masaru Nakahara , Masahiro Nakada , Hiroshi Suzuki , Kenichi Utsumi
IPC分类号： G11B7/00 , G06F3/06 , G11B7/0037 , G11B7/004 , G11B7/0055 , G11B7/006 , G11B7/007 , G11B11/10 , G11B11/105 , G11B19/00 , G11B19/02 , G11B20/10 , G11B20/12
CPC分类号： G06F3/0601 , G06F3/061 , G06F3/0626 , G06F3/0652 , G06F3/0658 , G06F3/0677 , G11B19/00 , G11B19/02 , G11B20/1217 , G11B7/0055 , G11B7/006 , G11B7/00736 , G06F2003/0697 , G11B11/10582 , G11B11/10595 , G11B2020/1232 , G11B2020/1285 , G11B2020/1297 , G11B2220/2537 , G11B7/0037 , G11B7/007
摘要： An optical disk includes a user accessible area having a plurality of blocks and flag data recorded on the optical disk. The flag data indicates whether or not each of the blocks is in an erased state in which there is no recorded data. A flag area stores the flag data, and area data indicating that the optical disk has the flag area is recorded on the optical disk.
摘要翻译：光盘包括具有多个块的用户可访问区域和记录在光盘上的标志数据。标志数据指示每个块是否处于没有记录数据的擦除状态。标志区域存储标志数据，并且指示光盘具有标志区域的区域数据被记录在光盘上。

6. 发明授权

US5418852A Unauthorized use prevention method for optical disks, optical disk having unauthorized use prevention function, and optical disk apparatus 失效
标题翻译：未经许可的光盘防伪方法，具有未经授权的使用防止功能的光盘和光盘装置
公开(公告)号：US5418852A
公开(公告)日：1995-05-23
申请号：US32481
申请日：1993-03-17
申请人： Satoshi Itami , Kenichi Utsumi , Masahiro Nakada , Hiroshi Suzuki , Kazunori Naito , Kazuo Nakashima , Toshikatsu Narumi , Masaru Nakahara
发明人： Satoshi Itami , Kenichi Utsumi , Masahiro Nakada , Hiroshi Suzuki , Kazunori Naito , Kazuo Nakashima , Toshikatsu Narumi , Masaru Nakahara
IPC分类号： G06F1/00 , G06F21/10 , G06F21/80 , G11B7/0037 , G11B20/00 , G11B20/12 , G11B23/28 , G11B15/05 , G11B19/04
CPC分类号： G11B23/284 , G06F21/10 , G06F21/80 , G11B20/00086 , G11B20/0021 , G11B20/00557 , G11B20/00615 , G11B20/0092 , G11B20/00927 , G11B20/00949 , G11B7/0037 , G06F2211/007 , G11B2020/1259
摘要： In a method for preventing unauthorized use of a recording medium having a user accessible area and a user inaccessible area, first information is read from the user inaccessible area of the recording medium. The first information is compared with second information concerning a true recording medium (lawfully produced copy). It is then concluded that the recording medium is the true recording medium when the first information corresponds to the second information.
摘要翻译：在防止未经授权使用具有用户可访问区域和用户不可访问区域的记录介质的方法中，从记录介质的用户不可访问区域读取第一信息。将第一信息与关于真实记录介质（合法制作的副本）的第二信息进行比较。然后得出结论，当第一信息对应于第二信息时，记录介质是真实记录介质。

7. 发明授权

US6011764A Optical disk and optical disk apparatus 失效
标题翻译：光盘和光盘设备
公开(公告)号：US6011764A
公开(公告)日：2000-01-04
申请号：US34409
申请日：1998-03-04
申请人： Satoshi Itami , Masaru Nakahara , Masahiro Nakada , Hiroshi Suzuki , Kenichi Utsumi
发明人： Satoshi Itami , Masaru Nakahara , Masahiro Nakada , Hiroshi Suzuki , Kenichi Utsumi
IPC分类号： G11B7/00 , G06F3/06 , G11B7/0037 , G11B7/004 , G11B7/0055 , G11B7/006 , G11B7/007 , G11B11/10 , G11B11/105 , G11B19/00 , G11B19/02 , G11B20/10 , G11B20/12
CPC分类号： G06F3/0601 , G06F3/061 , G06F3/0626 , G06F3/0652 , G06F3/0658 , G06F3/0677 , G11B19/00 , G11B19/02 , G11B20/1217 , G11B7/0055 , G11B7/006 , G11B7/00736 , G06F2003/0697 , G11B11/10582 , G11B11/10595 , G11B2020/1232 , G11B2020/1285 , G11B2020/1297 , G11B2220/2537 , G11B7/0037 , G11B7/007
摘要： An optical disk includes a user accessible area having a plurality of blocks and flag data recorded on the optical disk. The flag data indicates whether or not each of the blocks is in an erased state in which there is no recorded data. A flag area stores the flag data, and area data indicating that the optical disk has the flag area is recorded on the optical disk.
摘要翻译：光盘包括具有多个块的用户可访问区域和记录在光盘上的标志数据。标志数据指示每个块是否处于没有记录数据的擦除状态。标志区域存储标志数据，并且指示光盘具有标志区域的区域数据被记录在光盘上。

8. 发明授权

US5327411A Write control method and apparatus for writing optical disk data 失效
标题翻译：用于写入光盘数据的写控制方法和装置
公开(公告)号：US5327411A
公开(公告)日：1994-07-05
申请号：US953188
申请日：1992-09-29
申请人： Seiichi Iwasa , Nagaaki Koshino , Kenichi Utsumi , Masahiro Nakada
发明人： Seiichi Iwasa , Nagaaki Koshino , Kenichi Utsumi , Masahiro Nakada
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/006 , G11B7/013 , G11B7/125 , H04N5/85 , G11B7/007 , G11B21/10
CPC分类号： G11B7/00451 , G11B7/00456 , G11B7/0062 , G11B7/24085 , G11B7/00454
摘要： A write control method for writing optical disk data wherein pits are written by a write signal composed of mark signal parts and space signal parts, and a length of each pit represents the optical disk data, comprising the steps of: converting the mark signal parts to pulses and generating a series of pulse trains which correspond to lengths of the mark signal parts, respectively; controlling a lengths and/or amplitude of each of the pulse trains in accordance with a length of the space signal part immediately before the mark signal part; and applying successively the controlled pulse trains to a laser irradiation device so that the pits are written.
摘要翻译：一种用于写入光盘数据的写控制方法，其中凹坑由由标记信号部分和空间信号部分组成的写信号写入，并且每个凹坑的长度表示光盘数据，包括以下步骤：将标记信号部分转换为并产生一系列对应于标记信号部分的长度的脉冲串; 根据在标记信号部分之前的空间信号部分的长度来控制每个脉冲串的长度和/或幅度; 并且将受控脉冲序列连续地施加到激光照射装置，以便写入凹坑。

9. 发明授权

US5144618A Optical disc medium 失效
标题翻译：光盘介质
公开(公告)号：US5144618A
公开(公告)日：1992-09-01
申请号：US381321
申请日：1989-07-18
申请人： Yasuyuki Goto , Nagaaki Koshino , Kenichi Utsumi , Iwao Tsugawa , Masahiro Nakada
发明人： Yasuyuki Goto , Nagaaki Koshino , Kenichi Utsumi , Iwao Tsugawa , Masahiro Nakada
IPC分类号： B41M5/26 , G11B7/0055 , G11B7/24 , G11B7/243
CPC分类号： G11B7/24 , G11B7/00557
摘要： An erasable optical disc medium on which information is recorded and read by using a laser beam, which comprises (i) a phase transition type information recording layer, (ii) an optical interference layer and (iii) an optical reflection layer, formed in this order on a transparent substrate, in such a state that a reflectance of the medium is higher before information is recorded and a reflectance of the recorded portions of the medium is lower after recording.

10. 发明授权

US4984232A Compatible optical disk 失效
标题翻译：兼容光盘
公开(公告)号：US4984232A
公开(公告)日：1991-01-08
申请号：US333288
申请日：1989-04-05
申请人： Kenichi Utsumi , Nagaaki Koshino , Yasuyuki Goto , Iwao Tsugawa , Masahiro Nakada
发明人： Kenichi Utsumi , Nagaaki Koshino , Yasuyuki Goto , Iwao Tsugawa , Masahiro Nakada
IPC分类号： B41M5/26 , G11B7/007 , G11B7/09 , G11B7/24 , G11B7/243
CPC分类号： G11B7/243 , G11B7/0938 , G11B7/24 , G11B2007/2431 , G11B2007/24314 , G11B7/2585 , G11B7/2595
摘要： A compatible optical disk in which information can be reproduced by a player normally used exclusively for reproduction, and writing, rewriting and erasure can be performed, comprises a recording film material characterized in that the reflectivity of a flat portion of the disk is lower than 50% in an erased or unrecorded state and the reflectivity of a recorded area is increased by recording by an irradiation of light, a light beam-guiding groove (12) formed on the surface of the disk substrate so that information is recorded or read out along the trough portion (12) or crest portion (17) of the guiding groove, and the reflectivity is enhanced in the crest portion (17) between the troughs or in the trough portion (12) between the crests.

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