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公开(公告)号：EP0343670A3
公开(公告)日：1991-08-21
申请号：EP89109464.1
申请日：1989-05-26
CPC分类号： G11B20/10037 , G11B20/1426
摘要： A data demodulation apparatus applicable to a playback input signal from a digital recording apparatus, which executes A/D conversion of the input signal with a sampling period that is equal to the bit separation of that signal, and obtains phase data for reproducing the phase of the clock signal component of the input signal each time that a "1" state bit is detected in a sampling period. For each sampling period, or set of successive sampling periods, data values are derived which respectively represent a number of bit positions of the input signal within that period and the presence or absence of "1" state bits in the period, and these data values are converted to serial form to respectively constitute a reproduced clock signal and a detected data signal.
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2.发明公开Data recording/reproducing apparatus using a recording disk 失效Datenaufzeichnungs-wiedergabegerätau e einer Aufzeichnungsscheibe。
公开(公告)号：EP0375342A2
公开(公告)日：1990-06-27
申请号：EP89313251.4
申请日：1989-12-19
发明人： Shimada, Toshiyuki , Aoki, Kazuhiro 85 Manshion Matsubara 202 , Kurahashi, Akira , Kikuchi, Noburo
CPC分类号： G11B20/10037 , G11B7/0037 , G11B11/10515 , G11B11/1053 , G11B11/10576 , G11B20/10 , G11B20/10009 , G11B20/10046 , G11B20/10222 , G11B20/22
摘要： An equalizer apparatus is to be applied to a disk recording medium of DBF, for which there is used a sampling clock reproduced from the clock pit recorded on a disk recording medium. A fixed equalizer block comprising an analog to digital converter, a memory and a two-dimension equalizer suppresses the wave interference from the adjacent tracks and can reduce the error rate of the reproduced data by cross-talk even in case of narrowing of the track pitch. Further, by adding to the equalizer a sign detector, an FIR low-pass filter and a coefficient control circuit to make it a blind equalizer block, the interference fluctuation attributed to linear recording density, recording power irregularity, light spot, tracking error, etc. can be automatically compensated to suppress such fluctuation. Further, By the construction of the blind equalizer block, the errors of clock timing and its fluctuation can be automatically compensated with good efficiency.
摘要翻译： 将均衡器装置应用于DBF的盘记录介质，其中使用从记录在盘记录介质上的时钟凹坑再现的采样时钟。 包括模数转换器，存储器和二维均衡器的固定均衡器块抑制来自相邻轨道的波干扰，并且即使在轨道间距变窄的情况下也可以通过串扰降低再现数据的误码率 。 此外，通过向均衡器添加符号检测器，FIR低通滤波器和系数控制电路以使其成为盲均衡器块，归因于线性记录密度，记录功率不规则性，光点，跟踪误差等的干扰波动 可以自动补偿以抑制这种波动。 此外，通过构造盲均衡器块，可以以良好的效率自动补偿时钟定时及其波动的误差。
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公开(公告)号：EP0400678A3
公开(公告)日：1991-01-23
申请号：EP90110504.9
申请日：1990-06-01
CPC分类号： G11B5/09 , G11B5/012 , G11B5/4886 , G11B20/10 , G11B20/22 , G11B21/003
摘要： A signal recording/reproducing apparatus equipped with a recording head section for recording signals on a recording medium and a reproducing head section for reproducing the signals recorded on the recording medium. The recording head section is arranged to record the signal to form N recording sub-tracks on the recording medium and the reproducing head section has M reproducing sub-heads which trace the N recording sub-tracks to reproduce the recording signal. The pitch of the M sub-heads thereof is equal to a pitch of the recording sub-tracks and the number M of the sub-heads is greater than the number N of the recording sub-tracks. The reproducing head section is coupled to a reproduction signal detecting section which in turn eliminates the interference and the crosstalk between adacent tracks from the reproduced signal due to the reproducing head section. This arrangement allows narrowing the track pitch to increase the recording capacity and extremely improving the transfer rate concurrently with the elimination of the the interference between the adjacent codes and crosstalk between the adjacent tracks.
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公开(公告)号：EP1403869A2
公开(公告)日：2004-03-31
申请号：EP03025667.1
申请日：1996-12-05
申请人： KABUSHIKI KAISHA TOSHIBA , PIONEER ELECTRONIC CORPORATION , Hitachi, Ltd. , MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Kojima, Tadashi , Hirayama, Koichi , Yamada, Hisashi , Moriyama, Yoshiaki, Corp. Res. and Dev. Lab. , Yokogawa, Fumihiko, Corp. Res. and Dev. Lab. , Arai, Takao , Takeuchi, Toshifumi , Tanaka, Shinichi , Kurahashi, Akira , Shimada, Toshiyuki
CPC分类号： H03M5/145 , G11B20/1426 , H04L7/041 , H04L25/4906
摘要： A transmitting method of digital data whereby information data can be reproduced at a high precision. In order to retain digital data in sectors comprising a plurality of sync frames and sequentially transmit, the sync frame is comprised of the sync signal and the run length limited code which satisfies the limitations of the minimum run length and the maximum run length, and the sync signal includes the sync pattern constituted by a bit pattern of a run length that is longer than the maximum run length by only 3T and addition bit patterns which are arranged before and after the bit pattern and each of which has a run length that is longer than the minimum run length. The sync signal includes a specific code which indicates a position in the sector and which enables the DC control to be performed.
摘要翻译： 一种可以高精度地再现信息数据的信号形成装置。 为了在包括多个同步帧的扇区中保留数字数据并顺序地发送，同步帧包括满足最小游程长度和最大游程长度的限制的同步信号和游程长度限制码，并且 同步信号包括由长度比最大游程长度仅3T的游程长度的位模式构成的同步模式，以及排列在位模式之前和之后的游程长度更长的相加位模式 比最小游程长。 同步信号包括指示扇区中的位置并且能够执行DC控制的特定代码。
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公开(公告)号：EP0375342B1
公开(公告)日：1995-02-15
申请号：EP89313251.4
申请日：1989-12-19
发明人： Shimada, Toshiyuki , Aoki, Kazuhiro 85 Manshion Matsubara 202 , Kurahashi, Akira , Kikuchi, Noburo
CPC分类号： G11B20/10037 , G11B7/0037 , G11B11/10515 , G11B11/1053 , G11B11/10576 , G11B20/10 , G11B20/10009 , G11B20/10046 , G11B20/10222 , G11B20/22
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公开(公告)号：EP0343670A2
公开(公告)日：1989-11-29
申请号：EP89109464.1
申请日：1989-05-26
CPC分类号： G11B20/10037 , G11B20/1426
摘要： A data demodulation apparatus applicable to a playback input signal from a digital recording apparatus, which executes A/D conversion of the input signal with a sampling period that is equal to the bit separation of that signal, and obtains phase data for reproducing the phase of the clock signal component of the input signal each time that a "1" state bit is detected in a sampling period. For each sampling period, or set of successive sampling periods, data values are derived which respectively represent a number of bit positions of the input signal within that period and the presence or absence of "1" state bits in the period, and these data values are converted to serial form to respectively constitute a reproduced clock signal and a detected data signal.
摘要翻译： 一种数据解调装置，适用于来自数字记录装置的重放输入信号，其以等于该信号的位分离的采样周期执行输入信号的A / D转换，并且获得用于再现相位数据的相位数据 每当在采样周期中检测到“1”状态位时，输入信号的时钟信号分量。 对于每个采样周期或连续采样周期的集合，导出数据值，其分别表示在该周期内的输入信号的位数，以及该周期中是否存在“1”状态位，并且这些数据值 被转换为串行形式以分别构成再生时钟信号和检测数据信号。
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公开(公告)号：EP0779623A3
公开(公告)日：2001-02-28
申请号：EP96119545.0
申请日：1996-12-05
申请人： KABUSHIKI KAISHA TOSHIBA , PIONEER ELECTRONIC CORPORATION , Hitachi, Ltd. , MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Kojima, Tadashi , Hirayama, Koichi , Yamada, Hisashi , Moriyama, Yoshiaki, Corp. Res. and Dev. Lab. , Yokogawa, Fumihiko, Corp. Res. and Dev. Lab. , Arai, Takao , Takeuchi, Toshifumi , Tanaka, Shinichi , Kurahashi, Akira , Shimada, Toshiyuki
IPC分类号： G11B20/14
CPC分类号： H03M5/145 , G11B20/1426 , H04L7/041 , H04L25/4906
摘要： A transmitting method of digital data whereby information data can be reproduced at a high precision. In order to retain digital data in sectors comprising a plurality of sync frames and sequentially transmit, the sync frame is comprised of the sync signal and the run length limited code which satisfies the limitations of the minimum run length and the maximum run length, and the sync signal includes the sync pattern constituted by a bit pattern of a run length that is longer than the maximum run length by only 3T and addition bit patterns which are arranged before and after the bit pattern and each of which has a run length that is longer than the minimum run length. The sync signal includes a specific code which indicates a position in the sector and which enables the DC control to be performed.
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公开(公告)号：EP0343670B1
公开(公告)日：1995-08-09
申请号：EP89109464.1
申请日：1989-05-26
CPC分类号： G11B20/10037 , G11B20/1426
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公开(公告)号：EP0524628A1
公开(公告)日：1993-01-27
申请号：EP92112618.1
申请日：1992-07-23
CPC分类号： G11B7/126 , G11B7/005 , G11B7/13 , G11B11/10545 , G11B11/10597
摘要： A first switch outputs, during reproducing mode of operation, the address signal and data signal alternately, and during either recording or erasing mode of operation, the reference voltage signal. A second switch outputs, during the address signal period, the address signal obtained from a amplifier, and, during the data signal period, the output signal obtained from the first switch. Thus, during the recording or erasing mode of operation, the second switch will not produce the data signal.
摘要翻译： 第一开关在再现操作模式期间交替地输出地址信号和数据信号，并且在操作的记录或擦除操作模式期间输出参考电压信号。 第二开关在地址信号周期期间输出从放大器获得的地址信号，并且在数据信号周期期间输出从第一开关获得的输出信号。 因此，在记录或擦除操作模式期间，第二开关不会产生数据信号。
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10.发明公开Optical disk recording/reproducing apparatus and a photoelectric conversion amplifier therefor 失效OptischesGerätzur Aufzeichnung / Wiedergabe und photoelektrischerKonversionsverstärkerdafür。
公开(公告)号：EP0441362A1
公开(公告)日：1991-08-14
申请号：EP91101635.0
申请日：1991-02-06
IPC分类号： G11B7/13
CPC分类号： G11B7/13
摘要： In a photoelectric conversion amplifier for converting a light signal into a voltage signal, a resistor (8) and a capacitor (9) connected in parallel with the resistor are provided between a non-inverted input terminal of a differential amplifier (10) and a reference voltage source terminal, and thereby an offset voltage of the differential amplifier (10) is eliminated and a frequency characteristic is improved to have a wideband.
摘要翻译： 在用于将光信号转换为电压信号的光电转换放大器中，与差分放大器（10）的非反相输入端子和第二差分放大器（10）的非反相输入端子之间设置与电阻器并联连接的电阻器（8）和电容器（9） 参考电压源端子，从而消除差分放大器（10）的偏移电压，并且改善频率特性以具有宽带。
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