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91. 发明授权

US5010540A Apparatus for recording and reproducing information on and from an optical disk 失效
标题翻译：用于在光盘上记录和再现信息的装置
公开(公告)号：US5010540A
公开(公告)日：1991-04-23
申请号：US225892
申请日：1988-07-29
申请人： Hiroshi Fuji , Tsuneo Fujiwara , Takashi Iwaki , Tomiyuki Numata , Kentaroh Tsuji , Shigemi Maeda , Takeshi Yamaguchi , Kunio Kojima , Toshihisa Deguchi , Shigeo Terashima
发明人： Hiroshi Fuji , Tsuneo Fujiwara , Takashi Iwaki , Tomiyuki Numata , Kentaroh Tsuji , Shigemi Maeda , Takeshi Yamaguchi , Kunio Kojima , Toshihisa Deguchi , Shigeo Terashima
IPC分类号： G11B19/247
CPC分类号： G11B19/247
摘要： An apparatus for recording and reproducing information on and from an optical disk includes a first control for producing a first control signal for controlling the rotational speed of a rotational driving apparatus, on the basis of the detected radial position; a judging apparatus which judges whether or not the reproduced signals are reproduced from a recorded region of the optical disk; a second control for producing a second control signal for controlling the rotational speed of the rotational driving apparatus, on the basis of the signals reproduced from the disk; and a switch apparatus which switches the circuit so that the rotational driving apparatus is controlled by the first control signal when the reproduced signals are not reproduced from a non-recorded region, and controlled by the second control signal when the reproduced signals are reproduced from a recorded region.

92. 发明授权

US4958337A Disk recording checking method for determining if a disk is defective by the number of errors present 失效
标题翻译：磁盘记录检查方法，用于根据存在的错误数确定磁盘是否有缺陷
公开(公告)号：US4958337A
公开(公告)日：1990-09-18
申请号：US344530
申请日：1989-04-28
申请人： Toshihiro Yamanaka , Nobuyuki Horie , Shozou Kobayashi , Toshihisa Deguchi , Takeshi Yamaguchi , Shigemi Maeda , Yoshiki Nishioka , Teruki Sugiura
发明人： Toshihiro Yamanaka , Nobuyuki Horie , Shozou Kobayashi , Toshihisa Deguchi , Takeshi Yamaguchi , Shigemi Maeda , Yoshiki Nishioka , Teruki Sugiura
IPC分类号： G11B5/016 , G11B20/18
CPC分类号： G11B20/1816 , G11B5/016
摘要： A disk recording checking method in which recording is performed on a disk having radially different recording tracks each divided circumferentially into a plurality of sectors. The method employs a continuous writing device for continuously writing data onto a predetermined number of the sectors, and a continuous checking device for checking the data, while continuously reading the data from the predetermined number of the sectors. The method utilized checks both the number of errors in each code sequence and the total number of errors in each sector to determine if the data in the sector is valid.
摘要翻译：一种磁盘记录检查方法，其中在具有径向不同的记录磁道的磁盘上执行记录，每个记录磁道分别沿周向分成多个扇区。该方法采用连续写入装置，用于将数据连续地写入预定数量的扇区;以及连续检查装置，用于在从预定数量的扇区连续读取数据的同时检查数据。所使用的方法检查每个代码序列中的错误数量和每个扇区中的错误总数，以确定扇区中的数据是否有效。

93. 发明授权

US4920528A Method of disk recording using alternative recording tracks 失效
标题翻译：使用替代记录轨道的磁盘记录方法
公开(公告)号：US4920528A
公开(公告)日：1990-04-24
申请号：US16258
申请日：1987-02-19
申请人： Noriaki Sakamoto , Yoshiki Nishioka , Toshihiro Yamanaka , Nobuyuki Horie , Shozou Kobayashi , Toshihisa Deguchi , Shigemi Maeda
发明人： Noriaki Sakamoto , Yoshiki Nishioka , Toshihiro Yamanaka , Nobuyuki Horie , Shozou Kobayashi , Toshihisa Deguchi , Shigemi Maeda
IPC分类号： G11B20/18
CPC分类号： G11B20/1883 , G11B2220/20
摘要： A disk recording method in which recording is performed on a disklike recording medium having a radially coaxial or spiral recording track that is divided into a predetermined plural number of recording sectors each acting as a recording unit. A predetermined number of dedicated sectors are provided at a rear portion of the recording track so that the contents that are recorded in defective sectors of the recording sectors are alternatively assigned to the dedicated sectors.
摘要翻译：一种盘记录方法，其中在具有径向同轴或螺旋记录轨道的盘状记录介质上执行记录，所述盘状记录介质被分成预定的多个作为记录单元的记录扇区。预定数量的专用扇区设置在记录轨道的后部，使得记录在记录扇区的缺陷扇区中的内容交替地分配给专用扇区。

94. 发明授权

US4910479A Automatic gain control device for use in an optical memory device 失效
标题翻译：用于光存储器件的自动增益控制装置
公开(公告)号：US4910479A
公开(公告)日：1990-03-20
申请号：US299013
申请日：1989-01-19
申请人： Hiroshi Fuji , Shigemi Maeda , Takeshi Yamaguchi , Kunio Kojima , Toshihisa Deguchi , Shigeo Terashima
发明人： Hiroshi Fuji , Shigemi Maeda , Takeshi Yamaguchi , Kunio Kojima , Toshihisa Deguchi , Shigeo Terashima
IPC分类号： G11B7/00 , G11B7/005 , G11B11/105 , G11B19/02 , G11B20/10
CPC分类号： G11B20/10027 , G11B11/10515 , G11B11/10597 , G11B19/02 , G11B20/10009 , G11B7/005
摘要： An automatic gain control device for use in an optical memory device has a circuit for producing an amplification control signal which is fed back to a gain control amplifier through a sample-hold circuit. A pulse train detection circuit is provided for detecting the pulse train indicating that the data stored are a on the optical memory device is being playedback. When the pulse train is detected, the sample-hold circuit is made inactive so that the amplification control signal is directly fed back to the gain control amplifier, and when the pulse train ends, the sample-hold circuit is made active to hold the amplification control signal obtained at the end of the pulse train and to produce the amplification control signal held in the sample-hold circuit.

95. 发明授权

US5828649A Magneto-optical memory element 失效
标题翻译：磁光存储元件
公开(公告)号：US5828649A
公开(公告)日：1998-10-27
申请号：US447738
申请日：1995-05-23
申请人： Kenji Ohta , Yoshikazu Fujii , Tetuya Inui , Toshihisa Deguchi , Shigemi Maeda
发明人： Kenji Ohta , Yoshikazu Fujii , Tetuya Inui , Toshihisa Deguchi , Shigemi Maeda
IPC分类号： G11B7/007 , G11B7/013 , G11B7/09 , G11B7/24 , G11B11/10 , G11B11/105
CPC分类号： G11B11/10597 , G11B11/10563 , G11B11/10565 , G11B11/10578 , G11B11/10582 , G11B11/10584 , G11B7/0938 , G11B7/24 , G11B7/24085 , G11B7/007
摘要： An optical memory element includes a guide track groove portion and address signal pit portion for indicating the address of the guide track groove. The address signal pit portion has a pit width narrower than the groove width of the guide track groove portion.
摘要翻译：光学存储元件包括用于指示导轨槽的地址的导轨槽部分和地址信号凹坑部分。地址信号凹坑部具有比导轨槽部的槽宽窄的凹坑宽度。

96. 发明授权

US5764607A Method and apparatus for controlling digital copying of digitally recorded information 失效
标题翻译：用于控制数字记录信息的数字复制的方法和装置
公开(公告)号：US5764607A
公开(公告)日：1998-06-09
申请号：US731125
申请日：1996-10-09
申请人： Shigemi Maeda , Kunio Kojima , Jun Akiyama
发明人： Shigemi Maeda , Kunio Kojima , Jun Akiyama
IPC分类号： G11B20/10 , G11B7/28 , G11B19/02 , G11B20/00 , G11B23/28 , G11B27/00 , G11B27/034 , G11B27/11 , G11B27/32 , H04N5/91 , G11B7/00
CPC分类号： G11B27/329 , G11B19/02 , G11B20/00086 , G11B20/00666 , G11B20/00768 , G11B27/034 , G11B27/11 , G11B7/28 , G11B2220/218 , G11B2220/2525 , G11B2220/2545 , G11B23/28
摘要： An information recording and reproduction apparatus uses a recording medium that contains information which prohibits digital copying. A reproduction section reproduces the desired informatiion stored on a first recording medium. A recording section records the reproduced output at a desired position on a second recording medium. However, an erasing section erases the information from the first recording medium during the process of recording that information on the second recording medium. The first and/or second recording medium cannot be removed from the information recording and reproduction apparatus until the erasing operation is completed.
摘要翻译：信息记录和再现设备使用包含禁止数字复制的信息的记录介质。再现部分再现存储在第一记录介质上的所需信息。记录部分将再现的输出记录在第二记录介质上的期望位置。然而，在将该信息记录在第二记录介质上的过程中，擦除部分擦除来自第一记录介质的信息。在擦除操作完成之前，第一和/或第二记录介质不能从信息记录和再现设备中移除。

97. 发明授权

US5555229A Method and arrangement for recording/reproducing compressed program information on a recording medium containing a plurality of programs 失效
标题翻译：在包含多个节目的记录介质上记录/再现压缩节目信息的方法和装置
公开(公告)号：US5555229A
公开(公告)日：1996-09-10
申请号：US271492
申请日：1994-07-07
申请人： Kunio Kojima , Shigemi Maeda , Jun Akiyama
发明人： Kunio Kojima , Shigemi Maeda , Jun Akiyama
IPC分类号： G11B7/00 , G11B7/005 , G11B11/10 , G11B11/105 , G11B20/00 , G11B20/10 , G11B27/10 , G11B27/11 , G11B5/09
CPC分类号： G11B27/105 , G11B20/00007 , G11B27/11 , G11B2220/2529 , G11B2220/65
摘要： Pieces of leading compressed information, each of which corresponds to a predetermined number of blocks of each of a plurality of programs recorded on an optical disk, are successively read therefrom, and stored in a buffer memory in a compressed state as they are. Upon reproducing a certain program, the corresponding leading compressed information is read from the buffer memory, and reproduced after having been subjected to a decompressing process in an information-decompression processing circuit. The program is continuously reproduced by reading compressed information corresponding to the predetermined number of blocks following the leading compressed information from the optical disk and supplying the compressed information to the buffer memory. With this arrangement, it is possible to eliminate a slow switching operation in the case when programs are switched to start reproducing a different program.
摘要翻译：它们中的每一个对应于记录在光盘上的多个程序中的每一个的预定数量的块的先导压缩信息的片段被连续地读取，并且按原样存储在缓冲存储器中。在再现某个程序时，从缓冲存储器中读取对应的前导压缩信息，并且在信息解压缩处理电路中经过解压缩处理之后被再现。通过读取与来自光盘的引导压缩信息之后的预定数量的块相对应的压缩信息并将压缩信息提供给缓冲存储器来连续再现程序。通过这种布置，在程序切换开始再现不同的程序的情况下，可以消除缓慢的切换操作。

98. 发明授权

US5457667A Data recording/reproducing apparatus with alternating access of compressed works 失效
标题翻译：数据记录/再现装置，具有压缩工作的交替访问
公开(公告)号：US5457667A
公开(公告)日：1995-10-10
申请号：US7276
申请日：1993-01-21
申请人： Kunio Kojima , Shigemi Maeda , Jun Akiyama
发明人： Kunio Kojima , Shigemi Maeda , Jun Akiyama
IPC分类号： G11B7/00 , G11B7/005 , G11B20/00 , G11B20/10 , G11B27/10 , G11B27/11 , G11B27/19 , G11B27/24 , G11B27/32
CPC分类号： G11B27/24 , G11B20/00007 , G11B20/10 , G11B27/105 , G11B27/11 , G11B27/329 , G11B2020/10592 , G11B2020/10953 , G11B2220/216 , G11B2220/2525 , G11B2220/2529 , G11B2220/2545 , G11B2220/65
摘要： A data recording and reproducing apparatus uses a rewriteable optical disk with pre-recorded absolute address information, and comprises a data compression circuit for dividing and compressing continuous digital data into compressed plural data blocks, an expansion circuit to restore the compressed data to the original expanded form, and a buffer memory. Data is compressed in discrete data blocks and is recorded sequentially block by block to the optical disk. The compressed data is likewise read block by block from the disk during data reproduction. Using the data expansion circuit to expand the compressed data one block at a time, the data recording and reproducing apparatus can reproduce the original continuous digital data stream. Plural continuous digital data selections can thus be reproduced by alternately fetching data for the plural selections from the disk in compressed data block units and temporarily storing the data to a buffer memory for expansion.
摘要翻译：数据记录和再现装置使用具有预先记录的绝对地址信息的可重写光盘，并且包括用于将连续数字数据分割和压缩成压缩的多个数据块的数据压缩电路，扩展电路，以将压缩数据恢复到原始扩展表单和缓冲存储器。数据在离散数据块中被压缩，并逐个逐块地记录到光盘。在数据再现期间，压缩数据同样从盘读取。数据记录和重放装置可以使用数据扩展电路一次一个地扩展压缩数据，再现原始的连续数字数据流。因此可以通过以压缩数据块单位交替地从盘中取出多个选择的数据来再现多个连续的数字数据选择，并将数据临时存储到缓冲存储器进行扩展。

99. 发明授权

US5317549A Information recording and reproducing apparatus 失效
标题翻译：信息记录和再现装置
公开(公告)号：US5317549A
公开(公告)日：1994-05-31
申请号：US876072
申请日：1992-04-28
申请人： Shigemi Maeda , Kunio Kojima
发明人： Shigemi Maeda , Kunio Kojima
IPC分类号： G11B7/00 , G11B7/004 , G11B7/007 , G11B7/30 , G11B11/105 , G11B19/02 , G11B19/04 , G11B20/18 , G11B23/36 , G11B27/10 , G11B27/22
CPC分类号： G11B27/22 , G11B11/10595 , G11B19/02 , G11B19/04 , G11B20/182 , G11B23/36
摘要： An information recording and reproducing apparatus employs a magneto-optical disk including a main information recording area wherein plural pieces of main information can be recorded and a TOC area wherein control information related to each piece of main information can be recorded. When a reproducing operation cannot be performed from the TOC area, it is checked whether or not any pieces of control information exist, for example, by detecting an amplitude of a reproduced signal. Or, whether or not a recording or reproducing function of the apparatus works properly may be checked by, for example, a method of test writing and reproduction. As a result, whether or not the magneto-optical disk is a blank disk can be accurately determined. Further, when the disk is determined to be a blank disk, distinctive information indicating a blank disk is recorded in a predetermined portion of the TOC area. Thereafter, upon loading the disk, the disk is promptly determined to be a blank disk. On the other hand, when the disk is not determined to be a blank disk, at least a recording operation is inhibited, thereby eliminating a possibility of destroying useful main information already recorded in the main information recording area.
摘要翻译：信息记录和再现装置采用包括可以记录多条主信息的主信息记录区的磁光盘和可记录与每条主信息相关的控制信息的TOC区。当不能从TOC区域执行再现操作时，例如通过检测再现信号的幅度来检查是否存在任何控制信息。或者，可以通过例如测试写入和再现的方法来检查设备的记录或再现功能是否正常工作。结果，可以准确地确定磁光盘是否为空盘。此外，当确定盘是空白盘时，指示空白盘的特征信息被记录在TOC区域的预定部分中。此后，在加载磁盘时，迅速地将磁盘确定为空白磁盘。另一方面，当盘不被确定为空盘时，至少禁止记录操作，从而消除了已经记录在主信息记录区中的有用主信息的可能性。

100. 发明授权

US5315571A Information recording and reproducing device providing faster access time to a recording medium 失效
标题翻译：信息记录和再现装置提供对记录介质的更快的访问时间
公开(公告)号：US5315571A
公开(公告)日：1994-05-24
申请号：US100077
申请日：1993-07-29
申请人： Shigemi Maeda , Kunio Kojima , Jun Akiyama , Shigeo Terashima , Tomiyuki Numata
发明人： Shigemi Maeda , Kunio Kojima , Jun Akiyama , Shigeo Terashima , Tomiyuki Numata
IPC分类号： G11B7/004 , G11B7/085 , G11B11/105 , G11B19/12 , G11B19/24 , G11B20/10 , G11B20/14 , G11B21/08 , G11B27/32 , G11B7/00
CPC分类号： G11B20/10 , G11B11/10504 , G11B11/10515 , G11B11/10563 , G11B19/12 , G11B19/24 , G11B20/1403 , G11B21/085 , G11B27/327 , G11B7/004 , G11B7/08505 , G11B2020/1087 , G11B2020/10888 , G11B2220/20 , G11B2220/2525
摘要： An information recording and reproducing device has a first recording clock generation circuit which generates a clock based on pre-recorded information on a magneto-optical disk, a second recording clock generation circuit and a switching circuit The switching circuit selects a first recording clock when recording information is of discrete information and selects a second recording clock when recording information is of successive information. Moreover, in the present device, a first reading clock is used as well as a second clock as a clock for reading out the reproduced data from the magneto-optical disk, which had been once stored in memory. The second reading clock having a reference frequency is generated by a second clock generation circuit and is used for reading out successive information such as music information. The first reading clock in synchronization with the reproduced signal is generated by a first reading clock generation circuit and is used for reading out discrete information such as computer-use data. In addition, in the case of discrete information, it is possible to start recording/reproducing operation immediately after an optical head reaches a desired position, thereby permitting to shorten an access time.
摘要翻译：信息记录和再现装置具有第一记录时钟产生电路，其基于磁光盘上的预先记录的信息产生时钟，第二记录时钟产生电路和切换电路。切换电路在记录时选择第一记录时钟信息是离散信息，并且当记录信息是连续信息时选择第二记录时钟。此外，在本装置中，使用第一读取时钟以及第二时钟作为用于从已经存储在存储器中的磁光盘读出再现数据的时钟。具有参考频率的第二读取时钟由第二时钟产生电路产生，并且用于读出诸如音乐信息的连续信息。与再现信号同步的第一读取时钟由第一读取时钟生成电路产生，并且用于读出诸如计算机使用数据的离散信息。此外，在离散信息的情况下，可以在光头到达期望位置之后立即开始记录/再现操作，从而允许缩短访问时间。

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