公开(公告)号：US4789974A

公开(公告)日：1988-12-06

申请号：US94899

申请日：1987-09-10

申请人： Isao Satoh ,  Yuzuru Kuroki ,  Makoto Ichinose ,  Katsumi Murai

发明人： Isao Satoh ,  Yuzuru Kuroki ,  Makoto Ichinose ,  Katsumi Murai

IPC分类号： G11B7/0037 ,  G11B7/125 ,  G11B19/04 ,  G11B20/18 ,  G11B7/00 ,  G01J1/20 ,  G11B5/09

CPC分类号： G11B7/126 ,  G11B19/04 ,  G11B20/182 ,  G11B7/00375

摘要： In an optical information recording/reproducing apparatus for recording/reproducing information on or from an optical disc, a laser beam is focused on the surface of a substrate of the optical disc so that the intensity or a high frequency component of a reflected laser beam is used to detect contaminants on the optical disc surface or a test signal containing a plurality frequency components and recorded on a specified track on the optical disc is reproduced and detected so that the difference between amplitudes of the frequency components is used to detect contaminants on the optical disc surface. Scattering of the laser beam can be prevented and recording/reproducing can be effected with a proper level of laser power.

公开(公告)号：US5214635A

公开(公告)日：1993-05-25

申请号：US837082

申请日：1992-02-14

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

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

IPC分类号： G11B7/013 ,  G11B7/125 ,  G11B27/19 ,  G11B27/30

CPC分类号： G11B7/126 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/24085

摘要： This invention provides an erasable optical disk, on which information is recorded and reproduced repeatedly through the irradiation of laser beams, and an optical information recording/reproduction apparatus which records and reproduces information on the erasable optical disk. In erasing and then recording information on the erasable optical disk by using an erasing laser beam and a recording/reproduction laser beam, respectively, the tracking of both laser beams on the same track is detected so as to prevent erroneous erasing. The apparatus uses the optical disk having a mark signal disposed between a sector identifier and a data field, which mark signal is capable of determining the presence of the erasing laser beam on an adjacent track on the erasable optical disk, and the apparatus reproduces and detects the mark signal by using the erasing laser beam. The apparatus discriminates the position of the erasing laser beam depending on whether the mark signal has been detected or not, thereby preventing erroneous erasing of data on the adjacent track and simultaneously assuring the presence of the erasing laser beam on the same track along with the recording/reproduction laser beam.

摘要翻译： 本发明提供了一种可擦除光盘，其上通过激光束的照射重复地记录和再现信息，以及在可擦除光盘上记录和再现信息的光信息记录/再现设备。 在擦除然后通过使用擦除激光束和记录/再现激光束在可擦除光盘上记录信息时，检测同一轨道上的两个激光束的跟踪，以防止错误擦除。 该装置使用具有布置在扇区标识符和数据场之间的标记信号的光盘，该标记信号能够确定擦除激光束在可擦除光盘上的相邻轨道上的存在，并且该装置再现和检测 通过使用擦除激光束的标记信号。 该装置根据是否检测到标记信号来鉴别擦除激光束的位置，从而防止在相邻轨道上错误地擦除数据，并同时确保擦除激光束与同一轨道上的存在以及记录 /再现激光束。

公开(公告)号：US4821254A

公开(公告)日：1989-04-11

申请号：US866954

申请日：1986-05-27

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： G06F3/06 ,  G06F3/08 ,  G06F12/00 ,  G11B7/00 ,  G11B7/0055 ,  G11B7/30 ,  G11B20/10 ,  G11B20/18 ,  G11B7/013

CPC分类号： G11B20/1883 ,  G11B20/1809 ,  G11B2020/183 ,  G11B2020/1869 ,  G11B2220/20

摘要： An information recording and reproducing apparatus detects deterioration in a recording medium. Structure is provided for recording information including an error correction code. A signal indicative of recorded information is received, and an error signal indicative of a number of errors that are detected is produced. This error signal is based on verification of the error correction code. The error correction code is verified using a strict clipping level, which is a level stricter than a usual level recognized as a particular signal level. This strict clipping level is compared with the signal indicative of reading areas, and error signals are produced thereby. When the error signal indicates a number of errors greater than a predetermined number, each sector is checked to determine if it is a bad sector. Each bad sector is recorded with a mark signal that indicates a bad sector. Before writing on the disk, each target sector is read verified using the strict clipping level, and mark signals indicative of a bad sector are recorded on any bad sectors. According to another aspect, the read verify operation is also carried out for a directory sector to ensure that the directory sector is correct.

摘要翻译： 信息记录和再现装置检测记录介质的劣化。 提供了用于记录包括纠错码的信息的结构。 接收到表示记录信息的信号，产生表示检测出的错误数的误差信号。 该错误信号基于纠错码的验证。 使用严格限幅电平验证纠错码，该电平比被识别为特定信号电平的通常电平更严格。 将该严格限幅电平与指示读取区域的信号进行比较，从而产生误差信号。 当误差信号指示大于预定数量的错误数量时，检查每个扇区以确定其是否是坏扇区。 每个坏扇区都记录有一个标记信号，表示一个坏扇区。 在写入磁盘之前，使用严格的限幅电平对每个目标扇区进行读取验证，并将指示不良扇区的信号记录在任何坏扇区上。 根据另一方面，还为目录扇区执行读取验证操作，以确保目录扇区是正确的。

公开(公告)号：US4799208A

公开(公告)日：1989-01-17

申请号：US915576

申请日：1986-10-03

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

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

IPC分类号： G11B7/00 ,  G11B7/0055 ,  G11B7/006 ,  G11B7/125 ,  G11B7/30

CPC分类号： G11B7/126 ,  G11B7/006

摘要： A data recording and reproducing apparatus is disclosed in which an optical disc for recording, reproducing or erasing data is radiated with an erasing light beam and a recording-reproducing light beam sequentially to record or reproduce the data with the recording-reproducing light beam and erase the data with the erasing light beam. In rewriting the data, the erasing light beam is radiated in advance of the recording-reproducing light beam on a data section of the disc, and the old data is erased by temperature increase and annealing by the erasing light beam, while new data is recorded by temperature increase and quenching with the recording-reproducing light beam set to the recording light intensity. After recording the new data, the light intensity of the erasing light beam is gradually decreased and turned off. In rewriting the sector data, the erasing light beam is radiated on the data section in advance of the recording-reproducing light beam, and by the temperature increase and annealing with the erasing light beam, the old data is erased, while new data is recorded by temperature increase and quenching with the recording-reproducing light beam set to the recording light intensity. After recording the new data, the light intensity of the erasing light beam is turned off after being modulated for a predetermined time. By doing so, the process of the temperature and quenching is eliminated which otherwise might be required at the time of turning off the erasing light beam, thereby preventing occurrence of a recording trace and a defect of the recording medium by a thermal shock.

摘要翻译： 公开了一种数据记录和再现装置，其中用于记录，再现或擦除数据的光盘依次用擦除光束和记录再现光束照射，以用记录 - 再现光束记录或再现数据并擦除 数据与擦除光束。 在重写数据时，擦除光束在记录再现光束之前在盘的数据部分上被辐射，并且通过擦除光束的温度升高和退火擦除旧数据，同时记录新数据 通过设置为记录光强度的记录 - 再现光束的温度升高和淬火。 在记录新数据之后，擦除光束的光强度逐渐降低并关闭。 在重写扇区数据时，擦除光束在记录再现光束之前在数据部分被辐射，并且通过用擦除光束进行升温和退火，旧数据被擦除，而新数据被记录 通过设置为记录光强度的记录 - 再现光束的温度升高和淬火。 在记录新数据之后，擦除光束的光强度在被调制预定时间后被关闭。 通过这样做，消除了在关闭擦除光束时可能需要的温度和淬灭的过程，从而防止由于热冲击而产生记录痕迹和记录介质的缺陷。

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：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。

公开(公告)号：US4823333A

公开(公告)日：1989-04-18

申请号：US3832

申请日：1987-01-16

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： G11B7/28 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/034

CPC分类号： G11B7/28 ,  G11B20/10 ,  G11B20/1217 ,  G11B20/1813 ,  G11B27/034 ,  G11B2220/20

摘要： An optical disk duplicating apparatus comprises reproducing means for reproducing user's data recorded on a first optical disk, adding means for adding sector data identification information indicative of the state of using sectors in recording tracks on the first optical disk to the reproduced user's data, recording means for recording the user's data on a second optical disk, and transfer means for transferring the user's data and the sector data identification information to the recording means. The optical disk duplicating apparatus determines whether each of the sectors in the first optical disk has data properly recorded therein, a defective sector identifier portion, a defective data field portion, or no signal recorded therein, by using the sector data identification information and controls a signal supplied to the recording means, thereby producing duplicated sectors in a manner such that the sectors in the first optical disk correspond respectively to the sectors in the second optical disk on the sector-to-sector basis.

摘要翻译： 一种光盘复制装置，包括用于再现记录在第一光盘上的用户数据的再现装置，用于将表示在第一光盘上的记录轨道中使用扇区的状态的扇区数据识别信息添加到再现用户数据的加法装置，记录装置 用于将用户的数据记录在第二光盘上，以及用于将用户数据和扇区数据识别信息传送到记录装置的传送装置。 光盘复制装置通过使用扇区数据识别信息来确定第一光盘中的每个扇区是否具有适当地记录在其中的数据，缺陷扇区标识符部分，缺陷数据字段部分或不记录信号，并且控制 信号提供给记录装置，从而以这样的方式产生复制扇区，使得第一光盘中的扇区分别对应于扇区到扇区的第二光盘中的扇区。

公开(公告)号：US4986668A

公开(公告)日：1991-01-22

申请号：US416834

申请日：1989-10-03

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

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

IPC分类号： G11B20/12 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0055 ,  G11B20/18

CPC分类号： G11B20/1883 ,  G11B2220/20

摘要： An information recording and reproducing apparatus for recording and reproducing information on and from a disk type information recording medium, wherein the information recording medium is used in which normal sectors (S1, Sn) each having an address formatted on an address area 12 in a sector ID field 9 and an alternative sector R1 having an address not yet recorded thereon are included on a same track. When a defective sector S3 is detected, first, the address of the defective sector is disabled to be reproduced by recording a delete signal 109 on the address area 12 of the defective sector S3, and at the same time, the address of the defective sector is recorded on an address area 13 in the unused alternative sector R1 located on the same track as the defective sector S3, and then, the data to be recorded on the defective sector is recorded within the alternative sector R1. Owing to such an operation for using an alternative sector, the alternative sector having the same address and data as the defective sector is formed on the same track as the defective sector. As a result, an information recording and reproducing apparatus which enables to access the alternative sector without an additional seek operation at the time of reproduction is provided.

公开(公告)号：US4969139A

公开(公告)日：1990-11-06

申请号：US162971

申请日：1988-03-02

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

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

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B20/18

CPC分类号： G11B20/1816 ,  G11B2020/1869 ,  G11B2220/2537

摘要： The apparatus includes a one-chip microcontroller, an error flag counter and an error comparison circuit to detect whether or not an optical disk or an internal optical head of the apparatus is fouled. Test data is recorded on a self-diagnostic area of the optical disk when the optical disk loaded in the apparatus is new and has not yet been used, and initial error information detected in the test data reproduced from the self-diagnostic area is registered on an error managing area of the optical disk. When an optical disk which has already been used is loaded, error information detected in the test data recorded on and reproduced from the self-diagnostic area of the optical disk is compared with the initial error information registered in the error managing area of the optical disk. When the comparison shows that the number of data errors is greater than a predetermined reference value, the optical disk or the internal optical head is fouled to such an extent that the recording and reproducing function cannot be satisfactorily performed.

公开(公告)号：US4939713A

公开(公告)日：1990-07-03

申请号：US159743

申请日：1988-02-24

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

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

IPC分类号： G11B7/013 ,  G11B7/125 ,  G11B27/19 ,  G11B27/30

CPC分类号： G11B7/126 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/24085

摘要： This invention provides an erasable optical disk, on which information is recorded and reproduced repeatedly through the irradiation of laser beams, and an optical information recording/reproduction apparatus which records and reproduces information on the erasable optical disk. In erasing and then recording information on the erasable optical disk by using an erasing laser beam and a recording/reproduction laser beam, respectively, the tracking of both laser beams on the same track is detected so as to prevent erroneous erasing. The apparatus uses the optical disk having a mark signal disposed between a sector identifier and a data field, which mark signal is capable of determining the presence of the erasing laser beam on an adjacent track on the erasable optical disk, and the apparatus reproduces and detects the mark signal by using the erasing laser beam. The apparatus discriminates the position of the erasing laser beam depending on whether the mark signal has been detected or not, thereby preventing erroneous erasing of data on the adjacent track and simultaneously assuring the presence of the erasing laser beam on the same track along with the recording/reproduction laser beam.