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123 条记录 (耗时 0.04 秒)

    Data transmission method for embedded data, data transmitting and reproducing apparatuses and information recording medium therefor
    21.
    发明授权
    Data transmission method for embedded data, data transmitting and reproducing apparatuses and information recording medium therefor 有权
    用于嵌入数据的数据传输方法，数据发送和再现装置及其信息记录介质

    公开(公告)号：US06404781B1

    公开(公告)日：2002-06-11

    申请号：US09144696

    申请日：1998-09-01

    申请人： Osamu Kawamae ,  Toshifumi Takeuchi ,  Hiroshi Yoshiura ,  Takao Arai

    发明人： Osamu Kawamae ,  Toshifumi Takeuchi ,  Hiroshi Yoshiura ,  Takao Arai

    IPC分类号： H04J312

    CPC分类号： H04N1/32149 ,  G06T1/0071 ,  H03M13/13 ,  H03M13/6306 ,  H04L1/0045 ,  H04L1/08 ,  H04N1/32288 ,  H04N19/467 ,  H04N2201/3284

    摘要： In a data transmission method for information data containing additional information data therewith, comprising, at a transmitter side, following steps: adding error correction codes for correcting error to said additional information data; embedding said additional information data added with said error correction codes into the information data by plural times, repetitively; and transmitting the information data embedded with the repetitive additional information data therein, and comprising, at a receiver side, following steps: receiving the transmitted information data embedded with the repetitive additional information data therein; detecting the repetitive additional information data embedded from said transmitted information data received; determining said additional information data on a basis of a majority rule when receiving said information data; and correcting error with using the error correction codes received and determined when said additional information data contains error(s) therein.

    摘要翻译： 在包含附加信息数据的信息数据的数据传输方法中，包括在发送机侧的以下步骤：将用于纠正错误的纠错码添加到所述附加信息数据;将附加有所述纠错码的所述附加信息数据嵌入到 信息数据多次，重复; 并且在其中发送嵌入有重复附加信息数据的信息数据，并且在接收机侧包括以下步骤：在其中接收嵌入有重复附加信息数据的发送信息数据;检测从所发送的信息数据中嵌入的重复附加信息数据 在接收到所述信息数据时，基于多数规则确定所述附加信息数据; 以及当所述附加信息数据中包含错误时使用接收和确定的纠错码的校正误差。

    Recording and reproducing system and equalizing method for use in it.
    22.
    发明授权
    Recording and reproducing system and equalizing method for use in it. 失效
    录音和再现系统及其均衡方法。

    公开(公告)号：US06219320B1

    公开(公告)日：2001-04-17

    申请号：US09048987

    申请日：1998-03-27

    申请人： Nobutaka Amada ,  Toshifumi Takeuchi ,  Takao Arai

    发明人： Nobutaka Amada ,  Toshifumi Takeuchi ,  Takao Arai

    IPC分类号： G11B700

    CPC分类号： G11B20/10046 ,  G11B7/005 ,  G11B20/10009 ,  G11B20/10527 ,  G11B20/1426

    摘要： An optical disk medium to which a digital information signal modulated by using a run length limited code in which the minimum run length is d is recorded. The digital information signal is recorded at a bit rate Fb satisfying the equation Fb=K·d·Fm, wherein a cut-off frequency in frequency response of said optical disk medium is Fm, and a value of a coefficient K regarding recording density is larger than 1.

    摘要翻译： 记录通过使用其中最小游程长度为d的游程长度受限码调制的数字信息信号的光盘介质。 以符合式Fb = KdFm的比特率Fb记录数字信息信号，其中所述光盘介质的频率响应中的截止频率为Fm，关于记录密度的系数K的值大于1 。

    Reproducing method and apparatus, for a video signal having copy control information
    26.
    发明授权
    Reproducing method and apparatus, for a video signal having copy control information 有权
    用于具有复制控制信息的视频信号的再现方法和装置

    公开(公告)号：US06434322B1

    公开(公告)日：2002-08-13

    申请号：US09148325

    申请日：1998-09-04

    申请人： Hiroyuki Kimura ,  Takao Arai ,  Toshifumi Takeuchi

    发明人： Hiroyuki Kimura ,  Takao Arai ,  Toshifumi Takeuchi

    IPC分类号： H04N591

    CPC分类号： G06T1/0028 ,  G11B20/00086 ,  G11B20/00768 ,  G11B20/00884 ,  H04N5/913 ,  H04N2005/91328 ,  H04N2005/91335

    摘要： Electronic watermark information obtained by changing a luminance value of a luminance signal in a video signal and a copy generation management signal (CGMS signal) inserted into an area out of a scan region of the video signal are recorded into a recording medium. A reproducing apparatus comprises an electronic watermark information detecting circuit, a CGMS signal detecting circuit, a control circuit to which detected electronic watermark information and CGMS signal are supplied, and a video signal processing circuit controlled by an output of the control circuit. When the electronic watermark information and the CGMS signal have a rational relation, the video signal processing circuit is controlled to output the video signal.

    摘要翻译： 将通过改变视频信号中的亮度信号的亮度值和插入到视频信号的扫描区域中的区域中的复制产生管理信号（CGMS信号）获得的电子水印信息被记录在记录介质中。 一种再现装置包括电子水印信息检测电路，CGMS信号检测电路，检测到的电子水印信息和CGMS信号的控制电路以及由控制电路的输出控制的视频信号处理电路。 当电子水印信息和CGMS信号具有合理的关系时，控制视频信号处理电路输出视频信号。

    Disk reproducing apparatus capable of increasing speed of access to disks recorded at constant linear velocity
    28.
    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。

    Magnetic recording and reproducing device
    29.
    发明授权
    Magnetic recording and reproducing device 失效
    磁记录和再现装置

    公开(公告)号：US5414567A

    公开(公告)日：1995-05-09

    申请号：US625822

    申请日：1990-12-11

    申请人： Nobutaka Amada ,  Toshifumi Takeuchi ,  Akira Abeta ,  Takao Arai ,  Kouei Usuda

    发明人： Nobutaka Amada ,  Toshifumi Takeuchi ,  Akira Abeta ,  Takao Arai ,  Kouei Usuda

    IPC分类号： G11B5/02 ,  G11B20/10 ,  H04N5/782 ,  H04N9/802 ,  H04N9/835 ,  H04N5/78

    CPC分类号： H04N9/835 ,  G11B20/10 ,  H04N5/78213 ,  H04N9/802

    摘要： A magnetic recording method and apparatus which performs a quadrature phase shift keying operation on a digital information signal, superimposes a high frequency bias signal on the performed signal, records the resulting signal into a deep portion of a magnetic layer of a magnetic tape with a first rotational head, and records a video signal in a surface portion of the magnetic layer above a track formed by the former recording, with a second rotational head which is different in azimuth angle from the first rotational head, the frequency of the high frequency bias signal being set to a value which is about four times as high as the carrier frequency of the quadrature phase shift keyed digital information signal, thereby eliminating a 5th-order distortion component due to cross modulation of the high frequency bias signal and the carrier frequency.

    摘要翻译： 对数字信息信号执行正交相移键控操作的磁记录方法和装置，在所执行的信号上叠加高频偏置信号，将所得到的信号记录在磁带的磁性层的深部，第一 旋转头，并且利用与第一旋转头的方位角不同的第二旋转头将磁性层的表面部分中的视频信号记录在由前一记录形成的轨道上，高频偏置信号的频率 被设置为正交相移键控数字信息信号的载波频率的约四倍的值，从而消除由于高频偏置信号和载波频率的交叉调制引起的5阶失真分量。