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132 条记录 (耗时 0.037 秒)

    Disk reproducing apparatus capable of increasing speed of access to disks recorded at constant linear velocity
    3.
    发明授权
    Disk reproducing apparatus capable of increasing speed of access to disks recorded at constant linear velocity 失效
    能够提高以恒定线速度记录的光盘访问速度的磁盘重放装置

    公开(公告)号：US5528574A

    公开(公告)日：1996-06-18

    申请号：US357978

    申请日：1994-12-16

    申请人： Toshifumi Takeuchi ,  Shigeki Inoue ,  Akio Fukushima ,  Takao Arai ,  Yutaka Nagai

    发明人： Toshifumi Takeuchi ,  Shigeki Inoue ,  Akio Fukushima ,  Takao Arai ,  Yutaka Nagai

    IPC分类号： G11B7/005 ,  G11B19/02 ,  G11B19/247 ,  G11B19/28 ,  G11B20/10 ,  G11B7/00

    CPC分类号： G11B19/247 ,  G11B19/02 ,  G11B19/28 ,  G11B20/10 ,  G11B7/005

    摘要： An optical disk reproducing apparatus for reproducing at a high access-speed an optical disk on which data has been recorded at a constant linear velocity (CLV) includes a control circuit for controlling reading of the disk recorded at a CLV to be rotated at a constant angular velocity (CAV), and a processor for changing the frequency of a reference clock to determine the processing timing of the reproduced digital signal in accordance with a transmission speed of the digital information signal picked up from the disk. A motor for driving the disk can be rotated at a constant revolution rate upon access to the disk, and thus it is possible to remove one of the factors for determining the access time in the conventional CLV type reproduction system, or the time for controlling the motor to rotate for a constant linear velocity in accordance with the position of the optical pickup.

    摘要翻译： 一种用于以高速存取速度再现数据以恒定线速度（CLV）记录的光盘的光盘重放装置包括控制电路，该控制电路用于控制在CLV处记录的磁盘的读数以使其以恒定的速度旋转 角速度（CAV）和用于改变参考时钟的频率的处理器，以根据从盘拾取的数字信息信号的传输速度确定再现的数字信号的处理定时。 用于驱动盘的电动机可以在进入盘时以恒定的转速旋转，因此可以去除用于确定常规CLV类型再现系统中的存取时间的因素之一，或者控制该时间 电机根据光学拾取器的位置旋转恒定的线速度。

    PCM signal recording method and apparatus for recording four-channel data to be compatible with two-channel data
    6.
    发明授权
    PCM signal recording method and apparatus for recording four-channel data to be compatible with two-channel data 失效
    用于记录四通道数据以与双通道数据兼容的PCM信号记录方法和装置

    公开(公告)号：US5247396A

    公开(公告)日：1993-09-21

    申请号：US350402

    申请日：1989-05-11

    申请人： Yutaka Nagai ,  Toshifumi Takeuchi

    发明人： Yutaka Nagai ,  Toshifumi Takeuchi

    IPC分类号： G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18

    CPC分类号： G11B20/00992 ,  G11B20/00007 ,  G11B20/10527 ,  G11B20/1208 ,  G11B20/1809 ,  G11B20/1211 ,  G11B2020/10546 ,  G11B2020/1087 ,  G11B2220/90 ,  G11B2220/913

    摘要： A PCM signal recording/reproducing apparatus includes write means for writing data on a recording medium, a data detecting circuit for detecting data from the recording medium, a temporary storage unit for storing temporarily the data to be recorded on the recording medium or the data reproduced from the recording medium, an error correcting circuit for correcting error of the data through cooperation with the storage unit and a switching circuit for changing over a first mode in which first data of two channels each having a sampling frequency of 48 KHz and a quantization bit number of n are recorded/reproduced with a second mode in which second data of two channels each having a sampling frequency of 32 KHz and a quantization bit number of n are recorded/reproduced in accordance with a recording format having a data location for the input data and dummy data location for dummy data to be added to the input data. Upon recording/reproduction of data of four channels including data of main two channels each having a sampling frequency of 32 KHz and a quantization number bits of n and two-sub-channels, recording/reproduction mode is changed over to the second mode in which the main two channel data are disposed at a data location on the recording format through the storage unit, while the input sub-two-channel data are disposed at the location for the dummy data on the recording format through a second block address control circuit.

    摘要翻译： PCM信号记录/再现装置包括用于在记录介质上写入数据的写入装置，用于从记录介质检测数据的数据检测电路，临时存储单元，用于临时存储要记录在记录介质上的数据或再现的数据 从记录介质，通过与存储单元协作来校正数据误差的纠错电路和用于切换第一模式的切换电路，其中每个采样频率为48KHz的两个通道的第一数据和量化位 根据具有用于输入的数据位置的记录格式来记录/再现以第二模式记录/再现n个数，其中每个具有32KHz的采样频率和n的量化位数的两个通道的第二数据被记录/再现 用于将要添加到输入数据的虚拟数据的数据和虚拟数据位置。 在记录/再现包括每个采样频率为32KHz的主要两个信道和n个和两个子信道的量化数位的四个信道的数据时，将记录/再现模式切换到第二模式，其中 主二通道数据通过存储单元设置在记录格式的数据位置，而输入的二通道数据通过第二块地址控制电路设置在记录格式上的伪数据的位置。

    Reproduction apparatus and reproduction method of digital video signal or audio signal
    7.
    发明授权
    Reproduction apparatus and reproduction method of digital video signal or audio signal 有权
    数字视频信号或音频信号的再现装置和再现方法

    公开(公告)号：US07356514B2

    公开(公告)日：2008-04-08

    申请号：US11515833

    申请日：2006-09-06

    申请人： Yutaka Nagai ,  Toshifumi Takeuchi

    发明人： Yutaka Nagai ,  Toshifumi Takeuchi

    IPC分类号： G11B7/28 ,  G11B5/09 ,  G11B5/86 ,  G11B20/10 ,  G11B27/36

    CPC分类号： G11B19/122 ,  G11B20/00086 ,  G11B20/00094 ,  G11B20/00115 ,  G11B20/00768 ,  G11B20/18 ,  H04N5/85 ,  H04N5/913 ,  H04N9/8042 ,  H04N2005/91328

    摘要： A reproduction method and apparatus for reproducing video data and/or audio data from a recordable medium having video data and/or audio data recorded thereon. The video data and/or audio data is generated by superimposing information concerning an attribute of a video signal and/or an audio signal on a signal of digitized video data and/or a signal of digitized audio data. Information concerning a copyright superimposed on the video data and/or audio data is reproduced from the medium, and a type of the medium is identified. Reproduction is stopped in response to a determination that the medium is illegally produced, the determination being based on a combination of the information concerning a copyright which is reproduced and the type of the medium identified.

    摘要翻译： 一种用于从其上记录有视频数据和/或音频数据的可记录介质再现视频数据和/或音频数据的再现方法和装置。 通过将关于视频信号和/或音频信号的属性的信息叠加在数字化视频数据的信号和/或数字化音频数据的信号上来生成视频数据和/或音频数据。 从介质再现关于叠加在视频数据和/或音频数据上的版权的信息，并且识别介质的类型。 响应于介质被非法产生的确定而停止复制，该确定基于关于被再现的版权的信息和所识别的介质的类型的组合。

    Information recording method, reproducing method, and reproducing apparatus
    8.
    发明授权
    Information recording method, reproducing method, and reproducing apparatus 有权
    信息记录方法，再现方法和再现装置

    公开(公告)号：US06314542B1

    公开(公告)日：2001-11-06

    申请号：US09514279

    申请日：2000-02-28

    申请人： Yutaka Nagai ,  Masafumi Nakamura ,  Toshifumi Takeuchi ,  Masayuki Hirabayashi

    发明人： Yutaka Nagai ,  Masafumi Nakamura ,  Toshifumi Takeuchi ,  Masayuki Hirabayashi

    IPC分类号： G11B7007

    CPC分类号： H04N5/783 ,  G11B20/1254 ,  G11B20/1809 ,  G11B27/3027 ,  G11B2020/1222 ,  G11B2020/1232 ,  G11B2020/1267 ,  G11B2020/1287 ,  G11B2020/1288 ,  G11B2220/20 ,  G11B2220/213 ,  G11B2220/2545 ,  H04N5/85 ,  H04N9/8042

    摘要： In a system recording compressed video and audio signals or computer user data on a disk in the sector unit, to reproduce the data in a simple fashion at a high speed, data to be recorded on the disk is divided into data in a predetermined unit so as to add a first error correction (C1) code to each of the resultant data, which form (C1) correction blocks. Sectors are produced each including a plurality of (C1) correction blocks. Added to each (C1) correction block is a code enabling identification of a sector. To all data in the plural (C1) correction blocks, a second error correction (C2) code is added to record the resultant data on the disk to allow interleaving or deinterleaving completing in a block. The capacity of each sector is set to be substantially equal to that of a plurality of transport packets.

    摘要翻译： 在扇区单元中的磁盘上记录压缩的视频和音频信号或计算机用户数据的系统中，为了以高速将简单的方式再现数据，将被记录在盘上的数据被划分为预定单元中的数据 以向每个形成（C1）校正块的结果数据添加第一纠错（C1）码。 产生各自包括多个（C1）校正块的扇区。 添加到每个（C1）校正块是能够识别扇区的代码。 对于多个（C1）校正块中的所有数据，添加第二纠错（C2）代码以将结果数据记录在盘上，以允许块中的交织或解交织完成。 每个扇区的容量被设置为基本上等于多个传输分组的容量。