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：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：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：US5023854A

公开(公告)日：1991-06-11

申请号：US353171

申请日：1989-05-17

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： G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/013 ,  G11B7/085 ,  G11B7/09 ,  G11B7/24085 ,  G11B11/105 ,  G11B13/04 ,  G11B19/04 ,  G11B20/12 ,  G11B27/10 ,  G11B27/30

CPC分类号： G11B7/004 ,  G11B11/10597 ,  G11B13/04 ,  G11B19/04 ,  G11B20/1252 ,  G11B27/105 ,  G11B27/3027 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/00745 ,  G11B7/085 ,  G11B7/0941 ,  G11B7/24085 ,  G11B2020/1259 ,  G11B2220/211 ,  G11B2220/2525 ,  G11B2220/2537

摘要： A read only type optical disc, and disc drive apparatus for reading/additionally writing data into the disc. The disc has a recording material formed in all of the tracks by which data can be additionally recorded on the disc. This optical disc has a plurality of sectors forming a data read-only area and a write/read area. 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 indicativ 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., rea-only area or write/read area. Thus, it is possible to avoid erroneous recording of data into the read-only area. Upon 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 data reading and data writing into the data write/read area can be improved.

公开(公告)号：US4964094A

公开(公告)日：1990-10-16

申请号：US217308

申请日：1988-07-11

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

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

IPC分类号： G11B7/013 ,  G11B20/12 ,  G11B27/30

CPC分类号： G11B7/24085 ,  G11B20/1217 ,  G11B27/3027 ,  G11B7/013 ,  G11B20/1258 ,  G11B2020/10888 ,  G11B2220/20

摘要： The present invention relates to an optical disk having a control track. The control track is divided into sectors in a manner similarly to a data track to record data and comprises a plurality of sectors. Each sector is composed of a sector identifying portion ID in which address information is recorded and a control field portion CF in which control data is recorded. The control field portion CF has the same format as the sector identifying portion ID. The control data is divided into recording data units in the control field portion CF and recorded. An identification flag is provided for each of the sector identifying portion ID and control field portion CF. The control track is searched by the address information in the sector identifying portion ID. The address data and control data are selected by use of the identifying flags in the sector identifying portion ID and control field portion CF, and they are read, then the control data are reassembled in order by using the address data of the sector identifying portion ID.

公开(公告)号：US4833663A

公开(公告)日：1989-05-23

申请号：US3820

申请日：1987-01-16

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： G11B19/04 ,  G11B27/034 ,  G11B27/036 ,  G11B27/30

CPC分类号： G11B27/30 ,  G11B19/04 ,  G11B27/036 ,  G11B2220/20 ,  G11B2220/216 ,  G11B27/034

摘要： Disclosed is an information recording/reproducing apparatus which uses a rewritable recording medium having a sector structure, and in which a data writing gate signal and a data erasing gate signal are reproduced on the basis of an ID detection signal of a target sector, while a data reading gate signal and a marking gate signal are produced on the basis of the ID detection signal of the target sector or on the basis of an ID detection signal of a sector located N sectors before the target one, so that when data is to be renewed in a specific sector from which no ID detection signal can be obtained, marking is performed in the specific sector on the basis of an ID detection signal of a sector located N sectors before the specific sector and new data are rewritten into a substitutive sector, whereby it is possible to perform data erasing and data recording in a target sector with high reliability and high positional accuracy and it is possible to shorten gaps respectively in front and rear of a data field to thereby make it possible to efficiently use a data area.

摘要翻译： 公开了一种使用具有扇区结构的可重写记录介质的信息记录/再现装置，其中基于目标扇区的ID检测信号再现数据写入门信号和数据擦除门信号，而 基于目标扇区的ID检测信号或基于在目标扇区之前的N个扇区的扇区的ID检测信号生成数据读取门信号和标记门信号，使得当数据为 在特定扇区中被更新，在该特定扇区中不能获得ID检测信号，基于位于特定扇区之前的N个扇区的扇区的ID检测信号和新数据被重写为替代扇区，在特定扇区中执行标记， 从而可以以高可靠性和高位置精度在目标扇区中执行数据擦除和数据记录，并且可以分别缩短前端和 从而能够有效地使用数据区域。

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.