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    • 1. 发明授权
    • Output level controlling apparatus
    • 输出电平控制装置
    • US5195075A
    • 1993-03-16
    • US693866
    • 1991-04-30
    • Takahumi ShibaHirokazu InotaniFumihiro NakajimaSeiichi Hasebe
    • Takahumi ShibaHirokazu InotaniFumihiro NakajimaSeiichi Hasebe
    • H03G3/02H03G3/10H03G3/20
    • H03G3/3026
    • An output level controlling apparatus comprises: a signal attenuating device for attenuating the reproduced output level of a reading/recording signal read from a record medium; a signal level deciding device for comparing the reproduced output level of the reading/recording signal to a reference signal level previously set; and an output level correcting device for sending a control signal to the signal attenuating device on the basis of the results of the comparison made by the signal level deciding device so as to attenuate the reproduced output level of the reading/recording signal when a reproduced output level is higher than the signal level of the reference signal and so as to decrease an attenuation amount of the reproduced output signal level of the reading/recording signal when the reproduced output signal level is lower than the signal level of the reference signal wherein the output level correcting device sends the control signal so as to rapidly attenuate the reproduced output level of the reading/recording signal and slowly increase the reproduced output level. It is therefore possible to momentarily attenuate a high input level for preventing the output in a high level and prevent the musical environment of BGM from being destroyed and aural sound vibrations from occurring during level adjustment.
    • 2. 发明授权
    • Apparatus for reproducing information recorded on optical disc
    • 用于再现记录在光盘上的信息的装置
    • US06212155B1
    • 2001-04-03
    • US09086528
    • 1998-05-29
    • Seiichi Hasebe
    • Seiichi Hasebe
    • G11B700
    • G11B20/10037G11B20/10009G11B20/10296G11B20/1403G11B20/1866G11B20/22
    • An apparatus for reproducing information recorded on an optical disc which can favorably accomplish a time base correction for a read signal in a simple configuration. Also, the apparatus precisely removes jitter component produced when a read signal is converted to a predetermined encoded signal. The apparatus has a a spindle motor for rotating an optical disc, an optical pickup for optically reading a recorded signal on the optical disc to generate a read signal corresponding to the reproduced signal, and an A/D converter for digitizing the read signal to reproduce an encoded signal. The apparatus is provided with a signal processing unit for removing low frequency noise components from the read signal without producing distortions in the direction of the time base of the read signal in the processing prior to outputting the encoded signal in the A/D converter.
    • 一种用于再现记录在光盘上的信息的装置,其可以以简单的配置有利地完成读取信号的时基校正。 此外,该设备精确地去除了当读取信号被转换成预定的编码信号时产生的抖动分量。 该装置具有用于旋转光盘的主轴电动机,用于在光盘上光学读取记录信号的光学拾取器,以产生对应于再现信号的读取信号;以及A / D转换器,用于数字化读取信号以再现 编码信号。 该装置设置有信号处理单元,用于在输出A / D转换器中的编码信号之前的处理中,从读取信号中去除低频噪声分量,而不会在读出信号的时基方向产生失真。
    • 4. 发明授权
    • Transmission interface unit in transmission system
    • 传输系统中的传输接口单元
    • US06633578B1
    • 2003-10-14
    • US09302489
    • 1999-04-30
    • Makoto MatsumaruKunihiro MinoshimaHidemi UsubaSho MurakoshiKinya OnoSeiichi Hasebe
    • Makoto MatsumaruKunihiro MinoshimaHidemi UsubaSho MurakoshiKinya OnoSeiichi Hasebe
    • H04L1240
    • H04L12/40058H04L12/40065H04L12/40084H04L12/6418
    • A transmission interface unit in a transmission system wherein time series data is divided into data groups and a data packet comprising reproduction specification time data specifying the time at which each data piece in the data groups should be reproduced, added to the data groups is transmitted on a transmission bus in a time division manner. The reception interface unit has a cycle timer for counting the reference time of the home machine based on the reference time on the transmission bus, a generation section for generating the reproduction specification time data, an addition section for dividing the time series data into data groups, putting into packets, and adding the reproduction specification time data to the data in the packets, and a rewrite section for rewriting the reproduction specification time data. When the reference time on the transmission bus changes, the rewrite section rewrites the reproduction specification time data added to the data put into a packet before the reference time on the transmission bus changes.
    • 传输系统中的传输接口单元,其中时间序列数据被分成数据组,并且包括指定应该再现数据组中的每个数据段的时间的再现指定时间数据的数据分组被发送到数据组 以时分方式传输总线。 接收接口单元具有循环定时器,用于根据传输总线上的参考时间对归属机的基准时间进行计数,生成部分,用于生成再现指定时间数据;加法部分,用于将时间序列数据划分为数据组 ,将分组中的数据添加到再现规格时间数据,以及重写部分,用于重写再现指定时间数据。 当传输总线上的参考时间改变时,重写部分重写在传输总线上的参考时间之前添加到放入分组中的数据的再现指定时间数据。
    • 7. 发明授权
    • Apparatus for reproducing information recorded on optical disc
    • 用于再现记录在光盘上的信息的装置
    • US06356523B1
    • 2002-03-12
    • US09086543
    • 1998-05-29
    • Seiichi Hasebe
    • Seiichi Hasebe
    • G11B700
    • G11B19/28G11B19/247
    • An apparatus for reproducing information recorded on an optical disc which can favorably accomplish a time base correction for a read signal in a simple configuration. Also, the apparatus precisely removes jitter components produced when a driving signal is supplied to a spindle motor. The apparatus has a spindle motor for rotating an optical disc, a pickup for optically reading a recorded signal on the optical disc to generate a read signal corresponding to the recorded signal, and an A/D converter for digitizing the read signal to reproduced an encoded signal. The apparatus is provided with a controller for supplying the spindle motor with driving power. The controller has an unnecessary component removing filter for removing high frequency components from the motor driving power.
    • 一种用于再现记录在光盘上的信息的装置,其可以以简单的配置有利地完成读取信号的时基校正。 此外,该设备精确地消除了当向主轴电动机提供驱动信号时产生的抖动分量。 该装置具有用于旋转光盘的主轴电动机,用于光学读取光盘上的记录信号的拾取器以产生对应于所记录的信号的读取信号;以及A / D转换器,用于将读取的信号数字化以再现编码的 信号。 该装置设置有用于向主轴电动机提供驱动力的控制器。 该控制器具有不必要的部件去除滤波器,用于从电机驱动功率中去除高频分量。
    • 9. 发明授权
    • Reception interface unit in transmission system
    • 接收接口单元在传输系统中
    • US06928126B2
    • 2005-08-09
    • US10410136
    • 2003-04-10
    • Kinya OnoKunihiro MinoshimaHidemi UsubaSho MurakoshiMakoto MatsumaruSeiichi Hasebe
    • Kinya OnoKunihiro MinoshimaHidemi UsubaSho MurakoshiMakoto MatsumaruSeiichi Hasebe
    • G11B20/10G11B20/14H04J3/06H04L7/00H04L12/28H04L12/40H04L12/44H04L12/70H04L12/951H04L7/02
    • H04L49/9052G11B20/14H04J3/0632H04L12/40032H04L12/40071H04L12/40117H04L49/90H04L49/9057H04L2012/40247
    • A reception interface unit in a transmission system wherein time series data is divided into data groups and a data packet with reproduction specification time data specifying a time at which each data piece in the data groups should be reproduced, added to the data groups is transmitted on a transmission bus in a time division manner. The interface unit has a cycle timer for counting the reference time of the home device based on the reference time on the transmission bus, a unit for extracting the reproduction specification time data in the data groups from a signal received via the transmission bus and storing the reproduction specification time data in a buffer, a reception buffer for inputting and storing the data pieces in the data groups in order and reading out the data pieces in the storage order responsive to a reproduction clock, a match detector for generating a reference clock pulse if the reference time of the home device matches the reproduction specification time, and a PLL circuit being responsive to the reference clock pulse for generating a clock signal which is phase synchronized with the reference clock pulse as the reproduction clock. When the reference time on the transmission bus changes, the data stored in the buffer in the reproduction specification time data extraction unit and the data stored in the reception buffer are all deleted.
    • 传输系统中的接收接口单元,其中时间序列数据被分成数据组和具有指定应该再现数据组中的每个数据段的时间的再现指定时间数据的数据分组被发送到数据组 以时分方式传输总线。 接口单元具有循环定时器,用于根据传输总线上的参考时间对归属设备的参考时间进行计数,该单元用于从经由传输总线接收的信号中提取数据组中的再现指定时间数据,并存储 缓冲器中的再现指定时间数据,用于按顺序输入和存储数据组中的数据段的接收缓冲器,并且响应于再现时钟以存储顺序读出数据片;匹配检测器,用于产生参考时钟脉冲,如果 家用设备的参考时间与再现指定时间相匹配,并且PLL电路响应于参考时钟脉冲,用于产生与参考时钟脉冲相位同步的时钟信号作为再现时钟。 当传输总线上的参考时间改变时,存储在再现指定时间数据提取单元中的缓冲器中的数据和存储在接收缓冲器中的数据都被删除。