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2281 条记录 (耗时 0.022 秒)

    Optical disk playback apparatus
    9.
    发明专利
    Optical disk playback apparatus 有权
    光盘播放装置

    公开(公告)号：JP2005216406A

    公开(公告)日：2005-08-11

    申请号：JP2004023123

    申请日：2004-01-30

    申请人： Alpine Electronics Inc ,  アルパイン株式会社

    发明人： NIREI SHINICHI

    IPC分类号： G11B7/09 ,  G11B5/58

    CPC分类号： G11B7/0948 ,  G11B7/0946

    摘要： PROBLEM TO BE SOLVED: To provide an "optical disk playback apparatus" capable of appropriately playing back a defective optical disk having flaws or the like even under an oscillating environment.
    SOLUTION: The optical disk playback apparatus is constituted of: an optical pickup 10: an RF amplifier 12 for generating a tracking error (TE) signal based on an electric signal from the optical pickup 10; a defect detection circuit 28 for detecting the presence or absence of a defect of an optical disk and outputting a DFCT signal showing the presence or absence of the defect; a switch 26 for outputting a hold signal when the defect is detected based on the DFCT signal; a driver 30 for controlling the operation of the optical pickup based on the output of the switch 26; a correction circuit 40 which extracts oscillating components of the optical pickup from the TE signal in response to the DFCT signal when the defect is detected and outputs a correction signal showing the oscillating components; and an adder circuit 50 for adding the correction signal from the correction circuit 40 to the hold signal.
    COPYRIGHT: (C)2005,JPO&NCIPI

    摘要翻译： 要解决的问题：提供即使在振荡环境下也能够适当地播放具有缺陷等的缺陷光盘的“光盘播放装置”。 解决方案：光盘播放装置由以下部分构成：光学拾取器10：用于基于来自光学拾取器10的电信号产生跟踪误差（TE）信号的RF放大器12; 缺陷检测电路28，用于检测是否存在光盘的缺陷，并输出表示有缺陷的DFCT信号; 开关26，用于当基于DFCT信号检测到缺陷时输出保持信号; 用于基于开关26的输出来控制光学拾取器的操作的驱动器30; 校正电路40，当检测到缺陷时，响应于DFCT信号，从TE信号中提取光学拾取器的振荡分量，并输出表示振荡分量的校正信号; 以及用于将来自校正电路40的校正信号与保持信号相加的加法器电路50。 版权所有（C）2005，JPO＆NCIPI

    Magnetic recording apparatus
    10.
    发明专利
    Magnetic recording apparatus 审中-公开
    磁记录装置

    公开(公告)号：JP2005203008A

    公开(公告)日：2005-07-28

    申请号：JP2004006374

    申请日：2004-01-14

    申请人： Fuji Photo Film Co Ltd ,  富士写真フイルム株式会社

    发明人： KIRA TADASHI

    IPC分类号： G11B5/53 ,  G11B5/58 ,  G11B15/43

    摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording apparatus in which the wear quantity of a magnetic head in accordance with the variation of a friction force can be reduced and to make a lifetime of a magnetic head longer. SOLUTION: This apparatus is the magnetic recording apparatus 100 in which the magnetic head is protruded slightly from a peripheral plane of a rotary drum 33 and fixed, the reading and writing of magnetic information are performed for a tape 23 through the magnetic head by bringing the rotary drum 33 into press-contact with the tape 23 for recording information to be travelled, the apparatus is provided with a tension giving means 51 giving tension to the tape 23 provided in a travelling system of the tape 23, a displacement measuring means 53 detecting the displacement of the magnetic head of a tape travelling direction caused by coming into contact with the tape 23 being travelled, and a tape tension control means 55 varying the tension of the tape 23 by drive-controlling the tension giving means 51 based on a distortion detecting signal from the displacement measuring means 53. COPYRIGHT: (C)2005,JPO&NCIPI

    摘要翻译： 要解决的问题：提供一种磁记录装置，其中可以减少根据摩擦力的变化的磁头的磨损量并使得磁头的寿命更长。 解决方案：该装置是磁头从旋转鼓33的外周面略微突出并固定的磁记录装置100，通过磁头对磁带23进行磁信息的读写 通过使旋转鼓33与用于记录要行进的信息的带23压接，该装置设置有向带23的行进系统中提供的带23施加张力的张力赋予装置51，位移测量 装置53检测由与行进带23接触而导致的磁带行进方向的磁头的位移;以及磁带张力控制装置55，通过驱动控制张力给出装置51来改变磁带23的张力， 来自位移测量装置53的失真检测信号。（C）2005年，JPO和NCIPI