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15 条记录 (耗时 0.014 秒)

    Optical disc recording and reproducing apparatus with improved servo control
    1.
    发明授权
    Optical disc recording and reproducing apparatus with improved servo control 失效
    具有改进的伺服控制的光盘记录和再现装置

    公开(公告)号：US4774698A

    公开(公告)日：1988-09-27

    申请号：US919145

    申请日：1986-09-08

    申请人： Fumiaki Henmi ,  Tamotsu Yamagami

    发明人： Fumiaki Henmi ,  Tamotsu Yamagami

    IPC分类号： G02B7/28 ,  G11B7/09 ,  G11B7/135 ,  G11B11/105 ,  G11B7/095 ,  G11B11/00

    CPC分类号： G11B11/10595 ,  G11B11/10506 ,  G11B11/10576 ,  G11B7/0941

    摘要： An optical disc recording and reproducing apparatus incorporates apparatus for recording a modulated signal on an optical disc, using a laser beam, and apparatus for optically reading a signal recorded on the disc. In both recording and reproducing modes, an optical signal is produced from the disc and used to supply a control signal to a servo system, for controlling the position of the laser beam relative to the optical disc. Apparatus is provided for subtracting, from the servo control signal, the low frequency components in the modulated signal being recorded on the disc, to improve the accuracy of focus and tracking of the laser beam relative to the optical disc.

    摘要翻译： PCT No.PCT / JP85 / 00668 Sec。 371日期1986年9月8日第 102（e）日期1986年9月8日PCT提交1985年12月5日PCT公布。 出版物WO86 / 04446 日期：1986年7月31日。光盘记录和再现装置包括使用激光束在光盘上记录调制信号的装置，以及用于光学读取记录在盘上的信号的装置。 在记录和再现模式中，从盘产生光信号，并用于向伺服系统提供控制信号，用于控制激光束相对于光盘的位置。 提供了用于从伺服控制信号中减去正在记录在盘上的调制信号中的低频分量的装置，以提高激光束相对于光盘的聚焦和跟踪精度。

    Signal recording and reproducing apparatus for an opto-magnetic disk
    2.
    发明授权
    Signal recording and reproducing apparatus for an opto-magnetic disk 失效
    用于光磁盘的信号记录和再现装置

    公开(公告)号：US4733385A

    公开(公告)日：1988-03-22

    申请号：US844190

    申请日：1986-03-26

    申请人： Fumiaki Henmi ,  Kiyoshi Ohsato ,  Tamotsu Yamagami

    发明人： Fumiaki Henmi ,  Kiyoshi Ohsato ,  Tamotsu Yamagami

    IPC分类号： G11B11/105 ,  G11B19/02 ,  G11B19/20 ,  G11B27/034 ,  G11B27/036 ,  G11B27/30 ,  G11B11/12

    CPC分类号： G11B19/20 ,  G11B11/10515 ,  G11B11/10519 ,  G11B11/10595 ,  G11B19/02 ,  G11B27/036 ,  G11B27/3027 ,  G11B27/3063 ,  G11B2220/2525 ,  G11B2220/2545 ,  G11B27/034

    摘要： A signal recording and reproducing device for use with an opto-magnetic disk having a number of concentric recording tracks. An optical head sweeps a given track at least twice during a time interval equal to a predetermined reproduction time for the track. Erasure signals and recording signals are supplied to the optical head during the first time sweeping and the second time sweeping, respectively, in order to effect signal erasure and recording. At the time of switching from the first time sweeping to the second time sweeping, the address data indicating the end point written on the terminal portion of the previously recorded signal area are sensed, and the recording is effected from the thus sensed recording end point.

    摘要翻译： 一种与具有多个同心记录磁道的光磁盘一起使用的信号记录和再现装置。 光头在等于轨道的预定再现时间的时间间隔内至少扫描给定轨道至少两次。 擦除信号和记录信号分别在第一次扫描和第二次扫描期间被提供给光头，以便进行信号擦除和记录。 在从第一次扫描切换到第二次扫描时，感测到表示写入先前记录的信号区域的终端部分上的结束点的地址数据，并且从如此感测的记录终点进行记录。

    Recording device and method for data of mixed formats
    3.
    发明授权
    Recording device and method for data of mixed formats 失效
    混合格式数据记录装置和方法

    公开(公告)号：US07606466B2

    公开(公告)日：2009-10-20

    申请号：US10516706

    申请日：2004-03-31

    申请人： Mitsutoshi Shinkai ,  Hideki Ando ,  Fumiaki Henmi ,  Takao Suzuki ,  Hisao Tanaka ,  Hirofumi Murakami ,  Kenji Hyodo

    发明人： Mitsutoshi Shinkai ,  Hideki Ando ,  Fumiaki Henmi ,  Takao Suzuki ,  Hisao Tanaka ,  Hirofumi Murakami ,  Kenji Hyodo

    IPC分类号： H04N5/76

    CPC分类号： G11B27/329 ,  G11B27/034 ,  G11B27/105 ,  G11B2220/20 ,  G11B2220/2541

    摘要： Video data of a plurality of different formats is mixedly recorded onto one disc-shaped recording medium so that they can be continuously reproduced. A clip is constructed by video data, audio data, auxiliary AV data, and time-sequential meta data which are time-sequentially associated. The data is managed by a directory structure. The data constructing the clip is collectively stored into clip directories under a directory CLPR. When the format of, for example, the video data is changed during the recording, the clip is divided at the changing position, a clip directory is newly formed, and a new clip is formed. The mixture existence of the formats among the clip directories is permitted. The mixture existence of the formats in the file stored in the clip directory is not permitted.

    摘要翻译： 多个不同格式的视频数据被混合地记录在一个盘形记录介质上，使得它们可以被连续再现。 视频数据，音频数据，辅助AV数据和与时间顺序相关联的时间顺序元数据构成剪辑。 数据由目录结构管理。 构建剪辑的数据被共同存储在CLPR目录下的剪辑目录中。 当例如视频数据的格式在记录期间被改变时，剪辑在变化位置被划分，新剪辑目录被新形成，并且形成新的剪辑。 剪辑目录中的格式的混合存在被允许。 不允许存储在剪辑目录中的文件格式的混合存在。

    Optical recording and reproducing apparatus with improved focussing control
    4.
    发明授权
    Optical recording and reproducing apparatus with improved focussing control 失效
    具有改进的聚焦控制的光学记录和再现装置

    公开(公告)号：US4547872A

    公开(公告)日：1985-10-15

    申请号：US401016

    申请日：1982-07-22

    申请人： Fumiaki Henmi ,  Yoshio Aoki

    发明人： Fumiaki Henmi ,  Yoshio Aoki

    IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/08 ,  G11B7/09 ,  G11B7/125 ,  G11B7/13 ,  G11B21/12

    CPC分类号： G11B7/0903 ,  G11B7/125 ,  G11B7/13

    摘要： An optical information recording and reproducing apparatus for recording and reproducing an information signal on and from a recording medium, respectively, having a recording track, and which includes a beam generator, having a laser, for generating a primary beam and first and second secondary beams of light arranged substantially in the same direction as the track on the recording medium, a focussing lens for focusing the primary beam and first and second secondary beams of light on the recording medium, and a detecting device having a primary photodetector for detecting a reflected primary beam from the recording medium and first and second secondary photodetectors for detecting reflected first and second secondary beams from the recording medium. Additionally the apparatus includes a beam intensity control device for controlling the intensity of at least the primary light beam such that high and low intensities of at least the primary beam are sufficient to create and prevent indicia in the recording medium, respectively, in accordance with the information signal when the apparatus is in a recording mode and for controlling the intensity of at least the primary beam such that a substantially constant intensity is maintained in at least the primary beam to prevent indicia from being formed in the recording medium when said apparatus is in a reproducing mode. The apparatus also includes a focussing control device for controlling the position of the focussing lens by using the amplified difference between the outputs of the first and second secondary photodetectors when the apparatus is in a recording mode, and a position control device for controlling the tracking of the primary beam on the recording track in response to the amplified difference between the outputs of the first and second secondary photodetectors when the apparatus is in a reproducing mode.

    摘要翻译： 一种光信息记录和再现装置，用于分别在具有记录轨道的记录介质上记录和再现信息信号，并且包括具有激光的光束发生器，用于产生主光束和第一和第二次光束 的基本上与记录介质上的轨道相同的方向布置的光;聚焦透镜，用于将主光束和第一和第二次光束聚焦在记录介质上;以及检测装置，具有用于检测反射的主光束的主光电检测器 来自记录介质的光束和用于检测来自记录介质的反射的第一和第二次光束的第一和第二次级光电检测器。 另外，该装置包括用于控制至少主光束的强度的光束强度控制装置，使得至少主光束的高和低强度足以分别根据记录介质产生和防止记录介质中的标记 信息信号，并且用于控制至少主光束的强度，使得至少在主光束中保持基本上恒定的强度，以防止当所述装置处于记录介质中时在记录介质中形成标记 再现模式。 该装置还包括聚焦控制装置，用于当装置处于记录模式时，通过使用第一和第二二级光电检测器的输出之间的放大差值来控制聚焦透镜的位置;以及位置控制装置， 响应于当装置处于再现模式时第一和第二次级光电检测器的输出之间的放大的差异，记录轨道上的主光束。

    Digital video signal recording/reproducing apparatus and method thereof
    6.
    发明授权
    Digital video signal recording/reproducing apparatus and method thereof 失效
    数字视频信号记录/再现装置及其方法

    公开(公告)号：US06393197B2

    公开(公告)日：2002-05-21

    申请号：US09798281

    申请日：2001-02-28

    申请人： Fumiaki Henmi ,  Tetsuo Kani ,  Yoshihiro Murakami ,  Takao Inoue ,  Makoto Toyoshima

    发明人： Fumiaki Henmi ,  Tetsuo Kani ,  Yoshihiro Murakami ,  Takao Inoue ,  Makoto Toyoshima

    IPC分类号： H04N591

    CPC分类号： H04N21/236 ,  H04N5/78266 ,  H04N9/8047 ,  H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/895 ,  H04N21/434

    摘要： Reproducing heads reproduce signals from a tape in advance of recording heads for a time period equivalent to a system delay. An ECC decoder corrects an error of a signal received from each reproducing head. A BRR decoder decompresses and decodes the signal received from the ECC decoder. A concealing circuit interpolates the signal received from the BRR decoder. An output signal of the concealing circuit is sent back to a selector of the recording system. The selector switches between a signal received from an input terminal and the reproduced signal at the end of each field. An intra-field encoding process or an intra-frame encoding process can be selected as an compressing and encoding process. Information that represents the selected encoding process is recorded on the tape.

    摘要翻译： 再现头在记录头之前从磁带再现信号等于系统延迟的时间段。 ECC解码器校正从每个再现头接收的信号的错误。 BRR解码器对从ECC解码器接收的信号进行解压缩和解码。 隐藏电路内插从BRR解码器接收的信号。 隐藏电路的输出信号被送回到记录系统的选择器。 选择器在从输入端子接收的信号和每个场的末尾的再现信号之间切换。 可以选择场内编码处理或帧内编码处理作为压缩编码处理。 表示所选编码处理的信息记录在磁带上。

    Cutting apparatus for an optical disc
    8.
    发明授权
    Cutting apparatus for an optical disc 失效
    光盘切割装置

    公开(公告)号：US5084856A

    公开(公告)日：1992-01-28

    申请号：US571152

    申请日：1990-08-23

    申请人： Fumiaki Henmi ,  Koichi Nakajima

    发明人： Fumiaki Henmi ,  Koichi Nakajima

    IPC分类号： G11B7/004 ,  G11B7/125 ,  G11B7/26

    CPC分类号： G11B7/126 ,  G11B7/004 ,  G11B7/261

    摘要： A cutting apparatus is provided, in which a recording laser beam from a laser light source is ON/OFF-modulated by an optical modulating device on the basis of a square output signal in which a video FM wave signal is pulse width modulated by an audio FM wave signal thereby to form exposure pits on a master disc. This cutting apparatus includes a photodetector for receiving one portion of the recording laser beam irradiated on the master disc from the laser light source or a photodetector for receiving a reflected light of the recording laser beam irradiated on the master disc from the laser light source and which is reflected on the master disc. A detected output signal from the photodetector is supplied through a low-pass filter to a control circuit which controls an intensity of an output laser beam from the laser light source, and an offset of a source system line is adjusted so that a secondary higher harmonic component of a main carrier in the detected output from the photodetector is minimized.