公开(公告)号：US5077720A

公开(公告)日：1991-12-31

申请号：US507800

申请日：1990-04-12

申请人： Yuji Takagi ,  Isao Satoh ,  Makoto Ichinose ,  Yoshihisa Fukushima ,  Yuzuru Kuroki ,  Yasushi Azumatani

发明人： Yuji Takagi ,  Isao Satoh ,  Makoto Ichinose ,  Yoshihisa Fukushima ,  Yuzuru Kuroki ,  Yasushi Azumatani

IPC分类号： G11B20/18

CPC分类号： G11B20/1883 ,  G11B20/1833 ,  G11B2220/20

摘要： A read only optical disk is provided which includes (1) information sectors having recorded therein first encoded data obtained by encoding data by a first error detection/correction code to perform error detection and correction of the data and (2) check sectors each having recorded therein second encoded data obtained by encoding data among the first encoded data recorded in a plurality of selected information sectors by a second error detection/correction code. The second encoding by the second error detection/correction code is performed with respect to the data of the plurality of selected information sectors which are selected from respective tracks and are arranged sequentially at predetermined intervals in the circumferential direction on the tracks. As a result, in this read only optical disk, even when a two-dimensional defect (i.e., one extending circumferentially and radially) is present on the disk, there is no case in which two or more information sectors associated with the check sector cannot be subjected to error correction. Also, as a result of having one track including (2.sup.m -1) information sectors and one check sector which has overall parities of the information sectors recorded therein, it becomes possible to record in the check sector and in each of the information sectors, respectively, an address, which is peculiar to each sector, to thereby, realize the reproduction of data with high reliability.

公开(公告)号：US5073887A

公开(公告)日：1991-12-17

申请号：US372587

申请日：1989-06-28

申请人： Yuji Takagi ,  Isao Satoh ,  Makoto Ichinose ,  Yoshihisa Fukushima ,  Yuzuru Kuroki

发明人： Yuji Takagi ,  Isao Satoh ,  Makoto Ichinose ,  Yoshihisa Fukushima ,  Yuzuru Kuroki

IPC分类号： G11B20/12 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0055 ,  G11B7/007 ,  G11B27/00

CPC分类号： G11B7/00736

摘要： Directory data relating to user data are recorded in sectors of a checkerboard pattern or in sectors on every other track in a directory data area on an optical disk. The sectors which store the directory data are always flanked by adjacent virgin sectors in a direction normal to the tracks. Therefore, the latest directory data can be detected highly reliably without crosstalk noise from adjacent tracks. Alternatively, old directory data except the latest directory data are deleted or old directory data except the latest directory data and directory data in a predetermined number of sectors before the latest directory data are deleted, and the latest directory data can be detected highly reliably by detecting the deletion of the directory data.

公开(公告)号：US4879704A

公开(公告)日：1989-11-07

申请号：US74291

申请日：1987-07-16

申请人： Yuuji Takagi ,  Isao Satoh ,  Makoto Ichinose ,  Yoshihisa Fukushima ,  Yuzuru Kuroki

发明人： Yuuji Takagi ,  Isao Satoh ,  Makoto Ichinose ,  Yoshihisa Fukushima ,  Yuzuru Kuroki

IPC分类号： G06F3/06 ,  G06F1/00 ,  G06F3/08 ,  G06F12/14 ,  G06F21/22 ,  G06F21/24 ,  G11B7/007 ,  G11B7/28 ,  G11B20/00 ,  G11B20/10

CPC分类号： G11B20/00702 ,  G11B20/00086 ,  G11B7/00745 ,  G06F2211/007

摘要： In an optical disk system of the type including an optical disk for performing the recording and reproduction of data by use of a semiconductor laser and an optical disk recording and reproducing apparatus, an optical disk, optical disk recording and reproducing apparatus and copy preventive method for optical disks capable of preventing copying of the stored data from one optical disk on another. Irrespective of the kinds of optical disks, such as, read only-type optical disk, DRAW-type optical disk and erasable optical disk, each of the optical disks is provided in common with sectors from which data can be reproduced but not recorded on, i.e., data record-protected sectors and at least part of the stored data is stored in the record-protected sectors of the optical disk, thereby protecting the stored data from being recorded on the same address sectors of another recordable optical disk forming a part of the optical disk system.

摘要翻译： 在包括用于通过使用半导体激光器和光盘记录和再现装置执行数据的记录和再现的光盘的类型的光盘系统中，一种光盘，光盘记录和再现装置以及防复制方​​法 能够防止将存储的数据从另一个光盘复制的光盘。 无论像只读型光盘，DRAW型光盘和可擦除光盘这样的光盘的种类如何，每个光盘与可再现数据而不被记录在其上的扇区相同， 即数据记录保护的扇区和至少部分存储的数据被存储在光盘的记录保护的扇区中，从而保护所存储的数据不被记录在另一可记录光盘的相同地址扇区上，形成一部分 光盘系统。

公开(公告)号：US4769804A

公开(公告)日：1988-09-06

申请号：US942789

申请日：1986-12-17

申请人： Isao Satoh ,  Makoto Ichinose ,  Yoshihisa Fukushima ,  Yuzuru Kuroki ,  Yuji Takagi

发明人： Isao Satoh ,  Makoto Ichinose ,  Yoshihisa Fukushima ,  Yuzuru Kuroki ,  Yuji Takagi

IPC分类号： G11B7/00 ,  G11B7/0055 ,  G11B7/30 ,  G11B20/18 ,  G11B27/36

CPC分类号： G11B20/1883 ,  G11B20/182 ,  G11B27/36 ,  G11B7/0055 ,  G11B2220/20

摘要： An optical recording and reproducing apparatus for recording and reproducing data in an optical disk is disclosed. The optical disk has a plurality of erase test sectors in tracks, in one of which the accumulated number of tests together with test data is written. The data read from the erase test sector is compared with the recorded data to effect an erase function diagnosis. If data comparison shows an non-coincidence or the accumulated number of tests exceeds a predetermined value, a new erase test sector is used. The fatigue of the recording medium caused by a defect of the medium or reduced erasing efficiency due to an increased number of erasures of the recording medium is checked by controlling the accumulated number, completely separately from the fault of erase function of the apparatus, thus improving the reliability of the erase function self-diagnosis. Upon detection of an error in the read data or when the accumulated number of tests exceeds a predetermined value, a marking signal is written in the data field of a defective sector, and the apparatus shift to a new erase test sector not yet marked for subsequent erase function self-diagnosis, thereby making possible erase function self-diagnosis without being affected by the fatigue of the recording medium.

摘要翻译： 公开了一种用于在光盘中记录和再现数据的光学记录和再现装置。 光盘在轨道中具有多个擦除测试扇区，其中一个测试数据与测试数据一起被写入。 将从擦除测试扇区读取的数据与记录的数据进行比较以实现擦除功能诊断。 如果数据比较显示不一致或累积的测试次数超过预定值，则使用新的擦除测试扇区。 通过与设备的擦除功能的故障完全分开地控制累积数来检查由于介质的缺陷导致的记录介质的疲劳或由于记录介质的擦除次数增加而导致的擦除效率的降低，从而改善 擦除功能的可靠性自我诊断。 当检测到读取的数据中的错误或者当累积的测试次数超过预定值时，将标记信号写入缺陷扇区的数据字段中，并且该设备转移到尚未被标记为后续的新的擦除测试扇区 擦除功能自诊断，从而使擦除功能自诊断成为可能，而不受记录介质的疲劳的影响。

公开(公告)号：US4768181A

公开(公告)日：1988-08-30

申请号：US673620

申请日：1984-11-21

申请人： Makoto Ichinose ,  Isao Satoh ,  Tatuo Sugimura ,  Yuzuru Kuroki

发明人： Makoto Ichinose ,  Isao Satoh ,  Tatuo Sugimura ,  Yuzuru Kuroki

IPC分类号： G11B7/08 ,  G11B7/004 ,  G11B7/013 ,  G11B20/12 ,  G11B20/18 ,  G11B7/00

CPC分类号： G11B20/1883 ,  G11B20/1217 ,  G11B7/004 ,  G11B7/013 ,  G11B2220/20 ,  G11B2220/2537

摘要： An optical information recording and reproducing apparatus for recording and reproducing information on and from an optical recording disk having an optically detectable guide track divided into a plurality of sectors is disclosed. When a sector to or from which a data is to be recorded or reproduced is a defective sector or a non-use sector because of updating, a special pattern signal is recorded on the defective sector or the non-use sector, and if the recorded special pattern signal is detected in the reproduction cycle, that sector is determined as a defective or non-use sector and recording or reproducing on or from that sector is inhibited.

摘要翻译： 公开了一种光信息记录和再现装置，用于在具有划分成多个扇区的光学可检测导轨的光记录盘上记录和再现信息。 当由于更新要进行数据被记录或再现的扇区是缺陷扇区或不使用扇区时，特殊模式信号被记录在缺陷扇区或不使用扇区上，并且如果记录 在再现周期中检测到特殊图案信号，该扇区被确定为有缺陷或非使用扇区，并且禁止在该扇区上或从该扇区进行记录或再现。

公开(公告)号：US4742507A

公开(公告)日：1988-05-03

申请号：US819261

申请日：1986-01-16

申请人： Yuzuru Kuroki ,  Isao Satoh ,  Makoto Ichinose ,  Tatuo Sugimura

发明人： Yuzuru Kuroki ,  Isao Satoh ,  Makoto Ichinose ,  Tatuo Sugimura

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/085 ,  G11B20/18 ,  G11B27/034 ,  G11B27/10

CPC分类号： G11B20/1883 ,  G11B27/034 ,  G11B27/105 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/00745 ,  G11B2220/20 ,  G11B2220/218

摘要： An optical information recording and reproducing apparatus for recording and reproducing information from an optical recording disc including an optically detectable guide track preliminarily divided into a plurality of sectors. In the case of an unerasable disc, if an uncorrectable error exists in any sector after data has been recorded and reproduced from the sector, it is necessary to process this sector so as to prevent further reproduction an again record the data in another sector. Also, when updating a part of the data or erasing the file, it is desirable to take a measure so that reproduction of the data in any unwanted sector is prevented. Also, in the case of any unrecorded sector involving such dropout that the recording of data is presumed to cause an uncorrectable error, it is desirable to handle it as a defective sector and process it so as to prevent the recording of data therein. In such a case, it is desirable to effect the similar process also in the case of an erasable disc. A conceivable method of making such defective or unwanted sector distinguishable at a later time is to write in its information recording area a signal having a special pattern indicative of the defective or unwanted sector. In accordance with the invention, the reliability of special signal detection is increased by writing the special signal again when it is impossible to detect the special signal due to the occurrence of a track jump prior to or during the writing of the special signal, due to the occurrence of dropouts or the like.

摘要翻译： 一种光学信息记录和再现装置，用于从包括预先划分成多个扇区的光学检测导轨的光学记录盘记录和再现信息。 在不可擦除盘的情况下，如果从扇区记录和再现数据之后在任何扇区中存在不可纠正的错误，则需要处理该扇区以防止进一步再现再次将数据记录在另一个扇区中。 此外，当更新数据的一部分或擦除文件时，期望采取措施以防止任何不想要的扇区中的数据的再现。 此外，在涉及到数据的记录被认为引起不可校正的错误的任何未记录的扇区的情况下，期望将其作为缺陷扇区来处理，并且处理它以便防止在其中记录数据。 在这种情况下，也可以在可擦除盘的情况下进行类似的处理。 使这种有缺陷或不想要的扇区在稍后时间可区分的可想到的方法是在其信息记录区域中写入具有指示有缺陷或不需要的扇区的特殊模式的信号。 根据本发明，由于在特殊信号的写入之前或期间由于轨道跳跃的发生而不可能检测到特殊信号，所以通过再次写入特殊信号来提高特殊信号检测的可靠性，由于 出现辍学等。

公开(公告)号：US4566088A

公开(公告)日：1986-01-21

申请号：US542014

申请日：1983-10-12

申请人： Tomio Yoshida ,  Isao Satoh ,  Shunji Ohara ,  Kenji Koishi ,  Yuzuru Kuroki

发明人： Tomio Yoshida ,  Isao Satoh ,  Shunji Ohara ,  Kenji Koishi ,  Yuzuru Kuroki

IPC分类号： G11B7/135 ,  G11B7/0055 ,  G11B7/007 ,  G11B7/08 ,  G11B7/125 ,  G11B7/00

CPC分类号： G11B7/125 ,  G11B7/00557 ,  G11B7/00745 ,  G11B7/08

摘要： An optical and reversible recording and reproducing apparatus providing a practical apparatus in which information signals can be recorded, reproduced and erased by irradiating a laser beam and the like on the substrate to be optically recorded. More practically, there is provided such an apparatus wherein two light sources such as lasers having different wavelengths are used, and a first almost circular micro-lightspot is produced by one light source, while a second elliptic light spot having a longitudinal diameter in the tangential direction of a guide track on a disc is produced by the other light source. These first and second light spots are closely irradiated on one and the same guide track of an optical recording disc. The recording and reproducing of the signals are performed using the first light spot while the erasure of the recorded signals can be made by using the second light spot or using both first and second light spots in combination.

摘要翻译： 一种提供实用的设备的光学和可逆记录和再现设备，其中可以通过在光学记录的基板上照射激光束等来记录，再现和擦除信息信号。 更实际地，提供了这样的装置，其中使用诸如具有不同波长的激光器的两个光源，并且由一个光源产生第一几乎圆形的微光点，而具有切线中的纵向直径的第二椭圆形光点 光盘上的导轨的方向由另一光源产生。 这些第一和第二光斑被紧密地照射在光学记录盘的同一导轨上。 使用第一光点执行信号的记录和再现，同时可以通过使用第二光斑或同时使用第一和第二光点来组合擦除记录信号。

公开(公告)号：US5173886A

公开(公告)日：1992-12-22

申请号：US635238

申请日：1990-12-28

申请人： Isao Satoh ,  Yoshihisa Fukushima ,  Makoto Ichinose ,  Yuzuru Kuroki ,  Yuji Takagi

发明人： Isao Satoh ,  Yoshihisa Fukushima ,  Makoto Ichinose ,  Yuzuru Kuroki ,  Yuji Takagi

IPC分类号： G11B7/004 ,  G11B7/007 ,  G11B7/013 ,  G11B7/085 ,  G11B13/04 ,  G11B19/04 ,  G11B20/12 ,  G11B27/10

CPC分类号： G11B7/24085 ,  G11B13/04 ,  G11B19/04 ,  G11B20/1252 ,  G11B27/105 ,  G11B7/004 ,  G11B7/00745 ,  G11B7/085 ,  G11B2020/1259 ,  G11B2220/211 ,  G11B2220/2525 ,  G11B2220/2537

摘要： A composite read-only and rewritable type optical disc, and a disc drive apparatus for reading/writing data into the disc. The optical disc has a plurality of sectors forming a data read-only area and a write/read area. The disc includes a recording film formed over its entire surface by which data can be recorded on the disc. Each area has track sectors each having a sector identifier portion in which address information is recorded and a data field portion to record data. Data-field identification flags indicative of the read-only area and the write/read area are recorded in the respective identifier portions. On reading or writing this optical disc, the data field identification flag is detected to identify the kind of related area, i.e., whether it is a read-only area or a write/read area. Thus, it is possible to avoid erroneous recording of data into the read-only area. Upon executing a reading operation, waveform equalization and binary-clipping level of reproduction signals can be well controlled. The gain of the servo loop can be switched. The track searching operation can be stably performed. The reading and writing of data with respect to the data write/read area can be improved.

摘要翻译： 复合型只读和可重写型光盘，以及用于将数据读入/写入盘中的盘驱动装置。 光盘具有形成数据只读区域和写入/读取区域的多个扇区。 盘包括在其整个表面上形成的记录膜，通过该记录膜可以将数据记录在盘上。 每个区域具有各自具有记录地址信息的扇区标识符部分和记录数据的数据字段部分的轨道扇区。 指示只读区域和写/读区域的数据字段识别标志被记录在相应的标识符部分中。 在读取或写入该光盘时，检测数据字段识别标志以识别相关区域的种类，即它是只读区域还是写入/读取区域。 因此，可以避免将数据错误地记录到只读区域中。 在执行读取操作时，可以良好地控制再现信号的波形均衡和二进制削波电平。 可以切换伺服回路的增益。 可以稳定地进行轨道搜索操作。 可以提高对数据写入/读取区域的数据的读取和写入。

公开(公告)号：US5054017A

公开(公告)日：1991-10-01

申请号：US501105

申请日：1990-03-29

申请人： Jun Hiroyoshi ,  Yuzuru Kuroki ,  Isao Satoh

发明人： Jun Hiroyoshi ,  Yuzuru Kuroki ,  Isao Satoh

IPC分类号： G11B20/18 ,  G11B27/36

CPC分类号： G11B27/36 ,  G11B20/1816

摘要： In the reproduction of data from one of N-frame sectors of an optical disk, data marks representing the front ends of the respective frames of a desired sector are detected and counted. When the number of the data marks is more than a predetermined value M (1

公开(公告)号：US4949326A

公开(公告)日：1990-08-14

申请号：US129141

申请日：1987-12-07

申请人： Yuji Takagi ,  Isao Satoh ,  Makoto Ichinose ,  Yoshihisa Fukushima ,  Yuzuru Kuroki ,  Yasushi Azumatani

发明人： Yuji Takagi ,  Isao Satoh ,  Makoto Ichinose ,  Yoshihisa Fukushima ,  Yuzuru Kuroki ,  Yasushi Azumatani

IPC分类号： G11B20/18

CPC分类号： G11B20/1883 ,  G11B20/1833 ,  G11B2220/20

摘要： In a read only type optical disk and a write type optical disk each thereof having a data recording area and a spare area, first encoded data for error detection and correction are recorded in the data recording area. In the case of the read only type optical disk, the spare area is used as a check sector in which second encoded data are recorded. When error correction by first error control means becomes impossible while sectors in the data recording area are reproduced, second error control means performs error correction by using the check sector corresponding to an associated error sector. In the case of the write type optical disk, the spare area is used as an alternate sector. A defective sector detected by defective sector detecting means is alternately recorded by being replaced by the alternate sector through sector alternating means.

摘要翻译： 在只读型光盘和具有数据记录区和备用区的写型光盘中，用于错误检测和校正的第一编码数据被记录在数据记录区中。 在只读型光盘的情况下，备用区域被用作记录第二编码数据的检查扇区。 当在数据记录区域中的扇区被再现时，通过第一误差控制装置的纠错变得不可能，第二误差控制装置通过使用对应于相关联的误差扇区的检查扇区来执行纠错。 在写入型光盘的情况下，备用区域用作替代扇区。 由缺陷扇区检测装置检测到的缺陷扇区通过由扇区交替装置的替换扇区代替地交替记录。