Semiconductor integrated circuit
    71.
    发明授权

    公开(公告)号:US06496431B1

    公开(公告)日:2002-12-17

    申请号:US10173431

    申请日:2002-06-18

    IPC分类号: G11C700

    摘要: A semiconductor integrated circuit having therein a plurality of memories, realizing an improved yield by efficiently repairing a defective bit in a memory. This semiconductor integrated circuit has: a plurality of circuit blocks (RAM macro cells) each having an identification code coincidence detecting circuit for determining whether an input identification code coincides with a self identification code or not and a reception data latch and performing an operation according to latched data; a setting circuit capable of setting the identification code and information corresponding to the identification code and serially outputting the set information; and a control circuit capable of sequentially reading the setting information from the setting circuit, converting the setting information to parallel data, and transferring the parallel data to the plurality of circuit blocks. Each of the plurality of circuit blocks captures and holds the setting information transferred when the identification code coincidence detecting circuit determines that the input identification code and the self identification code coincide with each other.

    Optical head device
    72.
    发明授权
    Optical head device 有权
    光头设备

    公开(公告)号:US06400671B2

    公开(公告)日:2002-06-04

    申请号:US09897811

    申请日:2001-07-02

    IPC分类号: G11B700

    摘要: In a photodetector, the minimum size of the photodetection area for detecting a focus error signal from a light beam on the inner radius side of a hologram is made smaller than the minimum diameter of diffracted light beam spots (30, 31) for recording and reproduction, and when a CD is reproduced, a light beam close to the optical axis is made to significantly contribute to the focus error signal and the minimum size of the photodetection area for detecting the focus error signal from a light beam from the peripheral side of the hologram is made larger than the minimum diameter of diffracted light beam spots (130, 131) for recording and reproduction, whereby the focus error signal is made equal to the normal focus error signal when a DVD is reproduced, so that the focus offset variation caused when the base material thickness varies can be reduced.

    摘要翻译: 在光电检测器中,将用于检测来自全息图的内半径侧上的光束的聚焦误差信号的光检测区域的最小尺寸设定为小于用于记录和再现的衍射光束点(30,31)的最小直径 ,并且当再现CD时,使靠近光轴的光束显着有助于聚焦误差信号和用于从来自所述光轴的外围侧的光束检测聚焦误差信号的光检测区域的最小尺寸 使全息图大于用于记录和再现的衍射光束点(130,131)的最小直径,由此当再现DVD时使聚焦误差信号等于正常聚焦误差信号,使得聚焦偏移变化引起 当基材厚度变化时可以减少。

    Disk playback apparatus disk changer device and disk magazine device
    73.
    发明授权
    Disk playback apparatus disk changer device and disk magazine device 失效
    磁盘播放装置磁盘更换装置和磁盘盒装置

    公开(公告)号:US06333911B1

    公开(公告)日:2001-12-25

    申请号:US09015714

    申请日:1998-01-29

    IPC分类号: G11B1708

    CPC分类号: G11B23/0323 G11B17/30

    摘要: A disk playback apparatus such as a CD player comprises a case and a lift unit which is supported to be movable in the vertical direction to the case. The lift unit comprises a playback unit, a turntable, a holder drawing member, and the like. A magazine which is adapted to be loaded in the case accommodates therein disk holders, each of which hold one of different-sized disks. A control link having a holder butting pin and a disk control pin is movably mounted on the playback unit which is urged in the direction of departing from the disk by means of a release spring. When the disk holder reaches its accommodation position, the disk holder butts against the holder butting pin and rotates the control link slightly, thereby the disk control pin compulsively corrects the position of the disk. Thus the disk is certainly transported to the normal chucking position on the playback unit irrespective of the disk accommodated state in the disk holder.

    摘要翻译: 诸如CD播放机的盘播放装置包括壳体和提升单元,其被支撑为可在垂直方向上移动到壳体。 提升单元包括播放单元,转盘,保持器绘图构件等。 适于装载在壳体中的盒子容纳有盘保持器,每个盘保持不同大小的盘中的一个。 具有保持器对接销和盘控制销的控制链路可移动地安装在通过释放弹簧沿离开盘的方向被推动的回放单元上。 当盘保持器到达其收容位置时,盘保持器抵靠保持器对接销并稍微旋转控制链,从而盘控制销强制地校正盘的位置。 因此,无论盘保持器中的盘容纳状态如何,盘肯定地被传送到回放单元上的正常夹持位置。

    Disk changer device
    74.
    发明授权

    公开(公告)号:US06246643B1

    公开(公告)日:2001-06-12

    申请号:US08967835

    申请日:1997-11-12

    IPC分类号: G11B1722

    CPC分类号: G11B17/223

    摘要: A disk changer device is provided which is capable of maintaining continuity of control, small, and simple, by means of perpetually maintaining a 1-to-1 correspondence relation between the direction of rotation of the driving source and the direction of operation of the disk holding member. A loading unit 40 comprises a transporting plate 43 for transporting disk holding members 11, a chucking plate 44 for driving a drive plate 72 and clamp arm 73, a driving block 45, and so forth. The driving block 45 is provided with a loading pinion 50 which rotates according to the output of a loading motor 47. While the transporting plate 43 makes one reciprocal movement to perform extracting returning operation of the disk holding member 11 by certain rotation control of the loading pinion 50, via the rack 43a, the loading gear 54 is rotated 180° and the chucking plate 44 is driven on the going path or the returning path to perform chucking operation or chucking disengagement operation.

    Recording information reproducing apparatus for increasing an amplitude of a high frequency component of the reproduced signal
    75.
    发明授权
    Recording information reproducing apparatus for increasing an amplitude of a high frequency component of the reproduced signal 失效
    用于增加再现信号的高频分量的振幅的记录信息再现装置

    公开(公告)号:US06198587B1

    公开(公告)日:2001-03-06

    申请号:US08680985

    申请日:1996-07-16

    申请人: Hideki Hayashi

    发明人: Hideki Hayashi

    IPC分类号: G11B5035

    摘要: A recording information reproducing apparatus which can precisely reproduce a digital signal from any one of a plurality of kinds of recording disks of different recording densities. A recording density of a recording medium as a reproduction target is detected and an amplitude of a high frequency component of a read signal read out from the recording medium is increased by a gain according to the detected recording density.

    摘要翻译: 一种可以从不同记录密度的多种记录盘中的任何一种精确再现数字信号的记录信息再现装置。 检测作为再现目标的记录介质的记录密度,并且根据检测到的记录密度增加从记录介质读出的读取信号的高频分量的幅度增加增益。

    Ferroelectric memory
    76.
    发明授权
    Ferroelectric memory 失效
    铁电存储器

    公开(公告)号:US6078516A

    公开(公告)日:2000-06-20

    申请号:US48999

    申请日:1998-03-27

    申请人: Hideki Hayashi

    发明人: Hideki Hayashi

    IPC分类号: G11C14/00 G11C11/22

    CPC分类号: G11C11/22

    摘要: A memory device has a ferroelectric memory cell block, which is connected via an input/output latch buffer to a data input terminal. The memory device also has a writing period forming circuit that forms a predetermined number of writing periods when writing of data is requested. During the thus formed plurality of writing periods, a control circuit controls the input/output latch buffer to write data to the memory cell block. Thus, a single request for writing of data causes writing of data to be repeated a plurality of times automatically.

    摘要翻译: 存储器件具有铁电存储器单元块,其经由输入/输出锁存器缓冲器连接到数据输入端子。 存储装置还具有写入周期形成电路,当写入数据时,形成预定数量的写入周期。 在这样形成的多个写入周期期间,控制电路控制输入/输出锁存缓冲器将数据写入存储单元块。 因此,写入数据的单个请求导致自动重写数据重复多次。

    Branchmetric calculation circuit in a viterbi decoder
    78.
    发明授权
    Branchmetric calculation circuit in a viterbi decoder 失效
    维特比解码器中的分支计算电路

    公开(公告)号:US5809079A

    公开(公告)日:1998-09-15

    申请号:US573362

    申请日:1995-12-15

    申请人: Hideki Hayashi

    发明人: Hideki Hayashi

    摘要: A branchmetric calculation circuit in a Viterbi decoder capable of fast decoding with a small circuit scale. Square calculation for deriving a square of a subtraction result value between a received sample value and a predicted sample value is performed by broken line approximation using a plurality of linear functions.

    摘要翻译: 维特比解码器中的分支计算电路,能够以小的电路规模进行快速解码。 通过使用多个线性函数的虚线近似来执行用于导出接收的采样值和预测采样值之间的减法结果值的平方的平方计算。

    Optical disc having plural zones of recording tracks
    79.
    发明授权
    Optical disc having plural zones of recording tracks 失效
    具有多个记录磁道区域的光盘

    公开(公告)号:US5796711A

    公开(公告)日:1998-08-18

    申请号:US295256

    申请日:1994-08-24

    摘要: An optical disc of a sampled servo tracking method excludes unnecessary interference to wobbled pits of the servo area, whereby a tracking servo can be stably performed, a high density maintained, and a large recording capacity obtained. An optical disc in which a circular recording area comprising a plurality of concentric tracks or a spiral recording track which hold information signals including sync signals is divided into a plurality of zones bounded by circular boundary areas. The recording track is constituted by a plurality of sectors each comprising servo areas and data areas, the servo areas being located along straight lines in radial directions within the zone. The track pitch of the boundary area is made larger than the track pitch within the zone.

    摘要翻译: 采样伺服跟踪方法的光盘将对伺服区域的摆动坑的不必要的干扰排除在外,从而可以稳定地执行跟踪伺服,保持高密度,获得大的记录容量。 一种光盘,其中包括多个同心轨道的圆形记录区域或将包括同步信号的信息信号保持在一起的螺旋记录轨道被划分成由圆形边界区域限定的多个区域。 记录轨道由多个扇区构成,每个扇区包括伺服区域和数据区域,伺服区域沿着该区域内的径向方向的直线定位。 使边界区域的轨道间距大于区域内的轨道间距。

    Optical disk player with coarse and fine speed control
    80.
    发明授权
    Optical disk player with coarse and fine speed control 失效
    光盘播放器具有粗调和精细的速度控制

    公开(公告)号:US5745457A

    公开(公告)日:1998-04-28

    申请号:US606993

    申请日:1996-02-26

    CPC分类号: G11B19/24

    摘要: An optical disk player utilizes an analog read signal generated from a pickup. The analog read signal is converted to a digital read signal consisting of a plurality of bits in synchronism with a sampling clock in an A/D converter. The digital read signal is then decoded in a decoder and decoded data are generated. An error signal according to the difference between an actual rotational speed of the optical disk and a specified speed is generated on the basis of the digital read signal generated from the A/D converter or the decoded data generated from the decoder. And a rotational speed of a spindle motor is controlled in accordance with the error signal.

    摘要翻译: 光盘播放器利用从拾取器产生的模拟读取信号。 模拟读取信号被转换为与A / D转换器中的采样时钟同步的多个位组成的数字读取信号。 然后,数字读取信号在解码器中解码,并产生解码的数据。 根据从A / D转换器产生的数字读取信号或从解码器产生的解码数据,产生根据光盘的实际旋转速度与指定速度之差的误差信号。 并且根据误差信号来控制主轴电动机的转速。