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59 条记录 (耗时 0.026 秒)

    Optical recording medium having ID part shifting from the center of groove tracks
    11.
    发明授权
    Optical recording medium having ID part shifting from the center of groove tracks 失效
    光学记录介质，其ID部分从凹槽轨迹的中心移位

    公开(公告)号：US5936932A

    公开(公告)日：1999-08-10

    申请号：US823683

    申请日：1997-03-25

    申请人： Kazuhiko Nakane ,  Hiroyuki Ohata ,  Masato Nagasawa ,  Kenji Gotoh ,  Yoshinobu Ishida

    发明人： Kazuhiko Nakane ,  Hiroyuki Ohata ,  Masato Nagasawa ,  Kenji Gotoh ,  Yoshinobu Ishida

    IPC分类号： G11B7/004 ,  G11B7/007 ,  G11B7/085 ,  G11B7/09 ,  G11B7/24 ,  G11B20/12 ,  G11B27/10 ,  G11B27/11 ,  G11B27/19 ,  G11B27/30

    CPC分类号： G11B7/08505 ,  G11B27/11 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0901 ,  G11B20/1217 ,  G11B2220/20

    摘要： An optical disk according to the present invention has data recording tracks of lands and grooves. Each of the data recording tracks has a length corresponding to a revolution of the disk and includes a plurality of track sectors. The data recording tracks of lands and grooves are connected alternately to form a continuous data recording spiral. Each of the track sectors has a preformatted identification signal part for representing sector address data and has a data recording part for recording data. The identification signal part has a first address data region and a second address region. The first address data region and the second address data region are shifted by the same predetermined distance in opposite directions from the center of a groove track in the radial direction of the disk. The first address data region is set to represent the address of a groove track sector, and the second address data region is set to represent the address of a land track sector adjacent to the groove track sector.

    摘要翻译： 根据本发明的光盘具有焊盘和凹槽的数据记录轨道。 每个数据记录磁道具有对应于磁盘的旋转的长度并且包括多个磁道扇区。 陆地和凹槽的数据记录轨道交替连接以形成连续的数据记录螺旋。 每个轨道扇区具有用于表示扇区地址数据的预格式化识别信号部分，并具有用于记录数据的数据记录部分。 识别信号部分具有第一地址数据区和第二地址区。 第一地址数据区域和第二地址数据区域沿着盘的径向方向上的凹槽轨道的中心沿相反的方向偏移相同的预定距离。 第一地址数据区域被设置为表示凹槽轨道扇区的地址，并且第二地址数据区域被设置为表示与凹槽轨道扇区相邻的脊轨道扇区的地址。

    Tape tension control for a magnetic recording and reproducing apparatus that adjusts spacing error based on the reproduced signal envelope
    12.
    发明授权
    Tape tension control for a magnetic recording and reproducing apparatus that adjusts spacing error based on the reproduced signal envelope 失效
    用于根据再生信号包络调整间隔误差的磁记录和重放装置的胶带张力控制

    公开(公告)号：US5481417A

    公开(公告)日：1996-01-02

    申请号：US249745

    申请日：1994-05-26

    申请人： Eiji Yokoyama ,  Masato Nagasawa

    发明人： Eiji Yokoyama ,  Masato Nagasawa

    IPC分类号： B29C45/23 ,  B29C45/77 ,  G11B15/18 ,  G11B15/43 ,  G11B15/467 ,  G11B15/60

    CPC分类号： G11B15/602 ,  G11B15/1875 ,  G11B15/43 ,  G11B15/4673

    摘要： It is an object of the invention to realize a DTF control in a wide frequency range and a noiseless high-speed replay at several tens of times the normal relay speed without degradation of picture quality. It is also an object to provide an optimum contact between the head and the tape at all times by performing the tension control with high precision and in wide frequency range.A pair of supply side stationary pins 10a.sub.1, 10a.sub.2 and a supply side movable pin 9a driven by a supply side tape actuator 11a are provided on the magnetic tape supply side of the head cylinder that has a rotary head H. By controlling the supply side tape actuator 11a to move the movable pin 9a, the tension of the magnetic tape T at the head cylinder can be controlled. When the tape is replayed at speed different from the recording speed, the supply side tape actuator 11a and a takeup side tape actuator are operated differentially from each other to perform a good tracking.

    摘要翻译： 本发明的一个目的是在宽的频率范围内实现DTF控制，并且在正常的中继速度的几十倍下实现无噪声的高速重放，而不会降低图像质量。 本发明的另一个目的是通过以高精度和宽的频率范围进行张力控制，始终提供头与带之间的最佳接触。 在具有旋转头H的头筒的磁带供给侧设置有由供给侧带致动器11a驱动的一对供给侧固定销10a1,10a2和供给侧可动销9a。通过控制供给侧带 致动器11a移动可动销9a，可以控制磁带T在磁头柱上的张力。 当以与记录速度不同的速度重放带时，供给侧带致动器11a和卷绕侧带致动器彼此差异地操作以执行良好的跟踪。

    Magnetic head position controller in a magnetic recording and reproducing apparatus
    13.
    发明授权
    Magnetic head position controller in a magnetic recording and reproducing apparatus 失效
    磁头位置控制器在磁记录和重放装置中

    公开(公告)号：US5384676A

    公开(公告)日：1995-01-24

    申请号：US870459

    申请日：1992-04-17

    申请人： Eiji Yokoyama ,  Masato Nagasawa

    发明人： Eiji Yokoyama ,  Masato Nagasawa

    IPC分类号： G11B5/588

    CPC分类号： G11B5/588

    摘要： In a magnetic recording and reproducing apparatus having a solenoid-driven actuator to move a magnetic head in the tracking direction, a magnetic head position controller includes a state estimator for estimating the moving speed of the actuator from a drive voltage and a drive current supplied to the actuator; and a damping control loop for feeding back the estimated speed signal estimated by the state estimator to the actuator drive voltage. The state estimator is formed of a combination of equivalent circuits that electrically simulate modeled characteristics of the solenoid-driven actuator and receives the drive voltage and the drive current of the actuator and produces the estimated speed signal representing the speed of the actuator. The state estimator includes equivalent circuits that electrically simulate a drive coil resistance and inductance characteristic of the solenoid-driven actuator; a force constant of a magnetic circuit of the solenoid-drive actuator; and an inertia, a spring constant, and a counter electromotive force of the solenoid-driven actuator.

    摘要翻译： 在具有螺线管驱动致动器以沿跟踪方向移动磁头的磁记录和再现装置中，磁头位置控制器包括状态估计器，用于根据驱动电压和驱动电流来提供致动器的移动速度 执行机构 以及用于将由状态估计器估计的估计速度信号反馈到致动器驱动电压的阻尼控制回路。 状态估计器由电学模拟电磁驱动致动器的建模特性并接收驱动电压和致动器的驱动电流的等效电路的组合形成，并产生表示致动器速度的估计速度信号。 状态估计器包括电动模拟电磁驱动致动器的驱动线圈电阻和电感特性的等效电路; 螺线管驱动致动器的磁路的力常数; 以及螺线管驱动致动器的惯性，弹簧常数和反电动势。

    Specially formatted optical disk and method of playback
    15.
    发明授权
    Specially formatted optical disk and method of playback 失效
    特殊格式的光盘和播放方法

    公开(公告)号：US06826353B2

    公开(公告)日：2004-11-30

    申请号：US10419971

    申请日：2003-04-22

    申请人： Masato Nagasawa

    发明人： Masato Nagasawa

    IPC分类号： H04N5781

    CPC分类号： H04N9/804 ,  G11B7/0037 ,  G11B7/00745 ,  G11B7/08541 ,  G11B20/10 ,  G11B20/1217 ,  G11B20/1251 ,  G11B20/1258 ,  G11B27/005 ,  G11B27/034 ,  G11B27/036 ,  G11B27/105 ,  G11B27/19 ,  G11B27/24 ,  G11B27/28 ,  G11B27/3027 ,  G11B27/329 ,  G11B2220/20 ,  G11B2220/216 ,  G11B2220/2525 ,  G11B2220/2537 ,  H04N5/783 ,  H04N5/85 ,  H04N9/8042 ,  H04N9/8063 ,  H04N19/61

    摘要： In an optical disk storing digital image information in the form of a succession of blocks, each comprising a plurality of frames comprising I-, P- and B-pictures, wherein an address format is preformatted in front of the block of image information of said plurality of frames, and the data arrangement within each image information blocks is such that I- and P-pictures are collectively disposed. The position of the I-pictures within each block is shifted from one block to another. The I-picture data may be divided into fraction according to the position on the screen, the DCT frequency, or layering, and the fractional I-picture data may be arranged in the image information blocks, and a header or parity signal is recorded in front of each fractional I-picture data. With such a configuration, it is possible to increase the speed of fast playback, and realize smooth playback picture.

    摘要翻译： 在存储数字形式的数字图像信息的光盘中，每个块包括包括I，P和B图像的多个帧，其中地址格式被预格式化在所述图像信息块前面 多个帧，并且每个图像信息块内的数据排列使得I和P图像被集中布置。 每个块内的I图像的位置从一个块移动到另一个块。 I图像数据可以根据屏幕上的位置，DCT频率或分层划分为分数，并且分数I图像数据可以被布置在图像信息块中，并且标题或奇偶校验信号被记录在 每个分数I图像数据的前面。 通过这样的结构，能够提高快速重放的速度，能够实现平滑的播放画面。

    Optical disk drive and optical disk having address pits for sectors in land and groove tracks
    19.
    发明授权
    Optical disk drive and optical disk having address pits for sectors in land and groove tracks 失效
    光盘驱动器和光盘，其具有用于焊盘和凹槽轨道中的扇区的地址坑

    公开(公告)号：US5892740A

    公开(公告)日：1999-04-06

    申请号：US80301

    申请日：1998-05-18

    申请人： Masato Nagasawa ,  Kouichi Komawaki ,  Tsuyoshi Katayama

    发明人： Masato Nagasawa ,  Kouichi Komawaki ,  Tsuyoshi Katayama

    IPC分类号： G11B7/095 ,  G11B7/007 ,  G11B7/09 ,  G11B27/19 ,  G11B27/30

    CPC分类号： G11B7/00745 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/00718 ,  G11B7/0901

    摘要： In an optical disk of a single-spiral configuration, and including a first sequence of address pits and a second sequence of address pits, wherein headers include first and second sequences of address pits provided in different positions along the track. The first sequence of address pits are shifted by half a track pitch in a first radial direction so that its center line is aligned with a first boundary between a land track and a groove track following the header. The second sequence of address pits are shifted in a second radial direction opposite to the first radial direction by half a track pitch so that its center line is aligned with a second boundary (next to the first boundary) between a land track and a groove track following the header. The first sequence of address pits indicate an address of a sector in a first one of a land track and a groove track following the header. The second sequence of address pits indicate an address of a sector in a second one of a land track and a groove track following the header. The disk may further comprises mirror surface parts provided following the first and second sequences of address pits in a header at the connecting point. The offset in the tracking error signal is detected when the light spot is scanning the sequences of address pits and/or the mirror surface parts.

    摘要翻译： 在单螺旋配置的光盘中，并且包括地址坑的第一序列和地址坑的第二序列，其中报头包括沿着轨道设置在不同位置的第一和第二地址坑序列。 地址坑的第一序列在第一径向方向上偏移了半个轨道间距，使得其中心线与标题之后的脊轨道和凹槽轨迹之间的第一边界对准。 地址坑的第二序列在与第一径向方向相反的第二径向上移动半个轨道间距，使得其中心线与脊轨道和凹槽轨道之间的第二边界（在第一边界旁边）对准 跟随标题 地址坑的第一序列表示在标题之后的纹间轨道和凹槽轨迹的第一个中的扇区的地址。 地址坑的第二序列表示在标题之后的纹间轨道和凹槽轨迹的第二个中的扇区的地址。 盘可以进一步包括在连接点处的标题中的第一和第二地址坑序列之后提供的镜面部分。 当光点扫描地址坑和/或镜面部分的序列时，检测跟踪误差信号中的偏移。