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    • 1. 发明授权
    • Digital signal reproducing apparatus
    • 数字信号再现装置
    • US07852728B2
    • 2010-12-14
    • US11995634
    • 2006-07-20
    • Youichi OguraTatsushi HirakiYorikazu Takao
    • Youichi OguraTatsushi HirakiYorikazu Takao
    • G11B7/00
    • G11B20/10009G11B20/10046G11B20/10055G11B20/10083G11B20/10101G11B20/10111G11B20/10222G11B20/1403G11B2020/1287G11B2220/2562G11B2220/2575
    • A digital signal reproducing apparatus includes an analog to digital converter for sampling and quantizing a signal read from an optical recording medium in accordance with a reproduced clock having a frequency which is one-half of a channel bit frequency and outputting an obtained digital RF signal, an offset compensation circuit for reducing an offset component in an amplitude direction from the digital RF signal, and a simplified interpolation filter for reconstructing a signal indicating a predetermined pattern recorded in the optical recording medium from the output signal of the offset compensation circuit and outputting the reconstructed signal. A control operation is performed to reduce the magnitudes of respective values shown by first phase error information on a section with the predetermined pattern and by second phase error information on a section other than the section with the predetermined pattern.
    • 一种数字信号再生装置,具有模拟数字转换器,用于根据具有频率为通道位频率的二分之一的频率的再生时钟对从光记录介质读取的信号进行采样和量化,并输出所获得的数字RF信号, 偏移补偿电路,用于减少来自数字RF信号的振幅方向上的偏移分量;以及简化内插滤波器,用于根据偏移补偿电路的输出信号重建指示记录在光学记录介质中的预定模式的信号,并输出 重建信号。 执行控制操作以减小具有预定模式的部分上的第一相位误差信息所示的各个值的大小以及除了具有预定模式的部分之外的部分的第二相位误差信息。
    • 2. 发明申请
    • DIGITAL SIGNAL REPRODUCING APPARATUS
    • 数字信号再现设备
    • US20090257334A1
    • 2009-10-15
    • US11995634
    • 2006-07-20
    • Youichi OguraTatsushi HirakiYorikazu Takao
    • Youichi OguraTatsushi HirakiYorikazu Takao
    • G11B27/30H03M1/12
    • G11B20/10009G11B20/10046G11B20/10055G11B20/10083G11B20/10101G11B20/10111G11B20/10222G11B20/1403G11B2020/1287G11B2220/2562G11B2220/2575
    • A digital signal reproducing apparatus includes an analog to digital converter for sampling and quantizing a signal read from an optical recording medium in accordance with a reproduced clock having a frequency which is one-half of a channel bit frequency and outputting an obtained digital RF signal, an offset compensation circuit for reducing an offset component in an amplitude direction from the digital RF signal, and a simplified interpolation filter for reconstructing a signal indicating a predetermined pattern recorded in the optical recording medium from the output signal of the offset compensation circuit and outputting the reconstructed signal. A control operation is performed to reduce the magnitudes of respective values shown by first phase error information on a section with the predetermined pattern and by second phase error information on a section other than the section with the predetermined pattern.
    • 一种数字信号再生装置,具有模拟数字转换器,用于根据具有频率为通道位频率的二分之一的频率的再生时钟对从光记录介质读取的信号进行采样和量化,并输出所获得的数字RF信号, 偏移补偿电路,用于减少来自数字RF信号的振幅方向上的偏移分量;以及简化内插滤波器,用于根据偏移补偿电路的输出信号重建指示记录在光学记录介质中的预定模式的信号,并输出 重建信号。 执行控制操作以减小具有预定模式的部分上的第一相位误差信息所示的各个值的大小以及除了具有预定模式的部分之外的部分的第二相位误差信息。
    • 3. 发明申请
    • Recording position deviation correction apparatus, recording position deviation correction method, and recording position correction program
    • 记录位置偏差校正装置,记录位置偏差校正方法和记录位置校正程序
    • US20070109933A1
    • 2007-05-17
    • US10583372
    • 2004-12-10
    • Yorikazu TakaoTatsushi Hiraki
    • Yorikazu TakaoTatsushi Hiraki
    • G11B19/00
    • G11B20/10G11B20/10009G11B27/24G11B2220/216
    • In the prior art recording position deviation correction apparatus, it was difficult to obtain the physical address position during performing an additional recording processing. So, a high reliability recording position deviation amount cannot be calculated, and the recording position deviation correction cannot be carried out correctly. The present invention adopts, as a calculating method for calculating the recording position deviation amount in the additional recording processing, one among (1) to perform an interpolation processing on the basis of the physical address position before performing an additional recording processing thereby to detect the physical address during performing the additional recording processing, and calculates the positional deviation amount using the detected physical address position, (2) to calculate the recording position deviation amount on the basis of the position deviation amount before performing the additional recording processing, and (3) to obtain the physical address position in a stationary state by making the laser power to be irradiated constant when obtaining the physical address in the recording processing, and calculate the recording position deviation amount using the obtained physical address position, and thereby realizes a high reliability recording position deviation correction.
    • 在现有技术的记录位置偏差校正装置中,在执行附加记录处理期间难以获得物理地址位置。 因此,不能计算高可靠性记录位置偏差量,并且不能正确地执行记录位置偏差校正。 本发明作为用于计算附加记录处理中的记录位置偏差量的计算方法,在(1)中,在执行附加记录处理之前,根据物理地址位置执行插值处理之一,从而检测 在执行附加记录处理期间的物理地址,并且使用检测到的物理地址位置来计算位置偏差量,(2)基于在执行附加记录处理之前的位置偏差量来计算记录位置偏差量,以及(3 )通过在获取记录处理中的物理地址时使激光功率恒定来获得静止状态的物理地址位置,并且使用获得的物理地址位置计算记录位置偏差量,从而实现高可靠性 记录位置偏差 修正。
    • 7. 发明授权
    • Loudspeaker control apparatus and method for inspecting loudspeaker
    • 用于检查扬声器的扬声器控制装置和方法
    • US08903100B2
    • 2014-12-02
    • US13327720
    • 2011-12-15
    • Tatsushi Hiraki
    • Tatsushi Hiraki
    • H04R29/00H04R27/00
    • H04R29/001H04R27/00
    • A loudspeaker control apparatus of the present invention includes: an operation reception section that receives a user operation; a mode selection section that selects between two operation modes, based on the user operation, either a normal mode in which operations of a plurality of loudspeakers and lights are controlled independently or an inspection mode in which each of the plurality of loudspeakers is inspected to see whether it is operating normally; and a control section that controls the operations of the plurality of loudspeakers and lights based on the operation mode, and the control section, in the inspection mode, sequentially causes the plurality of loudspeakers to output an inspection tone and sequentially causes lights which correspond to the loudspeakers from which the inspection tone is being outputted to be turned on or to blink.
    • 本发明的扬声器控制装置包括:接收用户操作的操作接收部分; 模式选择部,其基于用户操作在两个操作模式之间选择其中独立地控制多个扬声器和灯的操作的正常模式或者检查多个扬声器中的每一个的检查模式以查看 是否正常运行? 以及基于操作模式控制多个扬声器和灯的操作的控制部分,并且在检查模式下,控制部分依次使多个扬声器输出检查音,并且依次使与 检测音被输出的扬声器被接通或闪烁。