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    • 3. 发明授权
    • Disc reproducing apparatus
    • 盘重放装置
    • US5740143A
    • 1998-04-14
    • US710054
    • 1996-09-10
    • Tatsuto Suetomi
    • Tatsuto Suetomi
    • G11B7/09G11B7/125G11B11/105G11B19/20G11B20/10H04N5/76
    • G11B7/126G11B11/10595G11B19/20G11B20/10G11B7/09G11B7/0941
    • A reproducing apparatus for a disc-shaped recording medium having digital audio signals recorded in a compressed form includes an optical head, a spindle motor, a servo control unit, a decoder, a memory and a controller. The optical head radiates a light beam on the disc-shaped recording medium for reading out data recorded on the disc-shaped recording medium. The spindle motor rotationally drives the disc-shaped recording medium at a constant linear velocity. The servo control unit servo-controls the optical head and the spindle motor based upon error signals generated on the basis of output signal of the optical head. The decoder decodes output signals of the optical head. The memory transiently stores output data of the decoder and the data stored in the memory is read out at a readout rate slower than the write rate of the data outputted from the decoder. The controller controls the optical head and the memory so that, by alternately setting a first period during which data recorded on the disc-shaped recording medium is read out by the optical head and written in the memory and a second period during which readout of data recorded on the disc-shaped recording medium by the optical head is discontinued and only readout of the data stored in the memory is made, the data recorded on the disc-shaped recording medium is read out intermittently. The controller discontinues the operation of the servo control unit during the second period.
    • 具有以压缩形式记录的数字音频信号的盘形记录介质的再现装置包括光头,主轴电机,伺服控制单元,解码器,存储器和控制器。 光头将光束照射在盘形记录介质上,用于读出记录在盘形记录介质上的数据。 主轴电机以恒定的线速旋转地驱动盘形记录介质。 伺服控制单元基于根据光学头的输出信号产生的误差信号来伺服控制光头和主轴电动机。 解码器解码光头的输出信号。 存储器瞬时存储解码器的输出数据,并且以比从解码器输出的数据的写入速率慢的读出速率读出存储在存储器中的数据。 控制器控制光头和存储器,以便通过交替地设置第一周期,在该第一周期期间,由光头读出记录在盘形记录介质上的数据并将其写入存储器,以及在其中读出数据的第二周期 通过光头记录在盘形记录介质上,并且只读存储在存储器中的数据,记录在盘形记录介质上的数据被间歇地读出。 控制器在第二期间中断伺服控制单元的动作。
    • 4. 发明授权
    • Optical recording/reproducing device having a controller for reducing
vibrational noise during recording by slowing moving speed of pickup
    • 具有控制器的光学记录/再现装置,用于通过减慢拾取的移动速度来减少记录期间的振动噪声
    • US5894459A
    • 1999-04-13
    • US866661
    • 1997-06-05
    • Kazuhito KuritaKunio ShimizuTatsuto Suetomi
    • Kazuhito KuritaKunio ShimizuTatsuto Suetomi
    • G11B7/085G11B11/105G11B19/02G11B11/00
    • G11B7/08529G11B11/10556G11B11/10595G11B19/02
    • An apparatus for recording and/or reproducing a disk-shaped optical recording medium such as a magneto-optical disk includes recording and/or reproducing unit, a moving unit and a controller. The recording and/or reproducing unit records input information on the disk-shaped optical recording medium loaded on the apparatus and reads out information recorded on the optical recording medium. The moving unit moves the recording and/or reproducing unit in the radius direction of the disk-shaped optical recording medium. The controller controls a recording and/or reproducing operation of the recording and/or reproducing unit and an operation of the moving unit. The controller controls the moving unit such that a moving speed for moving the recording and/or reproducing unit by the moving unit when the recording and/or reproducing unit records input information on the disk-shaped optical recording medium is lowered as compared with a moving speed for moving the recording and/or reproducing unit by the moving unit when the recording and/or reproducing unit reproduces the disk-shaped optical recording medium.
    • 用于记录和/或再现诸如磁光盘的盘形光学记录介质的装置包括记录和/或再现单元,移动单元和控制器。 记录和/或再现单元将输入信息记录在装载在该装置上的盘形光记录介质上,并读出记录在光记录介质上的信息。 移动单元沿盘形光学记录介质的半径方向移动记录和/或再现单元。 控制器控制记录和/或再现单元的记录和/或再现操作以及移动单元的操作。 控制器控制移动单元,使得当记录和/或再现单元将输入信息记录在盘形光学记录介质上时,通过移动单元移动记录和/或再现单元的移动速度与移动单元相比移动 当记录和/或再现单元再现盘形光学记录介质时,通过移动单元移动记录和/或再现单元的速度。
    • 5. 发明授权
    • Optical recording/reproducing device having control for reducing
vibrational noise during recording by slowing moving speed of pickup
    • 具有通过减慢拾取移动速度来减少记录期间的振动噪声的控制的光学记录/再现装置
    • US5684763A
    • 1997-11-04
    • US521602
    • 1995-08-30
    • Kazuhito KuritaKunio ShimizuTatsuto Suetomi
    • Kazuhito KuritaKunio ShimizuTatsuto Suetomi
    • G11B7/085G11B11/105G11B19/02G11B11/00
    • G11B7/08529G11B11/10556G11B11/10595G11B19/02
    • An apparatus for recording and/or reproducing a disk-shaped optical recording medium such as a magneto-optical disk includes a recording and/or reproducing unit, a moving unit and a controller. The recording and/or reproducing unit records input information on the disk-shaped optical recording medium loaded on the apparatus and reads out information recorded on the optical recording medium. The moving unit moves the recording and/or reproducing unit in the radius direction of the disk-shaped optical recording medium. The controller controls a recording and/or reproducing operation of the recording and/or reproducing unit and an operation of the moving unit. The controller controls the moving unit such that a moving speed for moving the recording and/or reproducing unit by the moving unit when the recording and/or reproducing unit records input information on the disk-shaped optical recording medium is lowered as compared with a moving speed for moving the recording and/or reproducing unit by the moving unit when the recording and/or reproducing unit reproduces the disk-shaped optical recording medium.
    • 用于记录和/或再现诸如磁光盘的盘形光学记录介质的装置包括记录和/或再现单元,移动单元和控制器。 记录和/或再现单元将输入信息记录在装载在该装置上的盘形光记录介质上,并读出记录在光记录介质上的信息。 移动单元沿盘形光学记录介质的半径方向移动记录和/或再现单元。 控制器控制记录和/或再现单元的记录和/或再现操作以及移动单元的操作。 控制器控制移动单元,使得当记录和/或再现单元将输入信息记录在盘形光学记录介质上时,通过移动单元移动记录和/或再现单元的移动速度与移动单元相比移动 当记录和/或再现单元再现盘形光学记录介质时,通过移动单元移动记录和/或再现单元的速度。