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公开(公告)号：EP1003163A4
公开(公告)日：2001-02-14
申请号：EP99923917
申请日：1999-06-04
申请人： SONY CORP , FUJITSU LTD
发明人： TAKEMOTO HIROYUKI , TAKEUCHI ATSUSHI , FUKUSHIMA YOSHIHITO , ITOH KENICHI , MORIBE MINEO , NUMATA TAKEHIKO
CPC分类号： G11B11/10565 , G11B7/007 , G11B7/00718 , G11B7/00745 , G11B7/08541 , G11B7/24085 , G11B7/261 , G11B11/10563 , Y10T428/21
摘要： A magneto-optic disk (10) has recording tracks (11) formed along concentric grooves (12) or a spiral groove (12), non-grooved portions formed in positions of the recording tracks (11), pit patterns representing information on the recording tracks (11) and formed on the non-grooved portion, and track-counting grooves (14) adapted for optically detecting that the light spot of a reading laser beam traverses a recording track (11) and provided in the non-grooved portions. Therefore, a high-speed access to a desired recording track is adequately performed while enabling high-density recording.
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22.发明公开Apparatus for scanning optical recording media 有权Vorrichtung zur Abtasten von optischen Aufzeichnungsmedien
公开(公告)号：EP1073044A2
公开(公告)日：2001-01-31
申请号：EP00114908.7
申请日：2000-07-17
IPC分类号： G11B7/085
CPC分类号： G11B7/00718 , G11B7/08505 , G11B7/08541
摘要： The present invention relates to an apparatus for reading and/or writing data markings (25) of an optical recording medium (1) having data markings (25) arranged along a track (20) and header markings (25') arranged laterally offset with respect to the centre of this track (20), and the apparatus itself has a header identification unit (8)
Object of the invention is to propose an apparatus in which an intermediate track signal (MZC) is formed, which enables direction identification during the traversal of tracks (20).
According to the invention, this object is achieved by virtue of the fact that the apparatus furthermore has a header sequence detector (9), a track crossing detector (10) and an intermediate track detector (11), which is connected to outputs of the header identification unit (8), of the track crossing detector (10) and of the header sequence detector (9), and generates an intermediate track signal (MZC).摘要翻译： 本发明涉及一种用于读取和/或写入具有沿轨道（20）布置的数据标记（25）的光学记录介质（1）的数据标记（25）和用横向偏移布置的标题标记（25'）的装置， 该装置本身具有标题识别单元（8）本发明的目的在于提出一种形成中间轨道信号（MZC）的装置，其能够在该轨迹（20）的中心处形成方向识别 跑道（20）。 根据本发明，该目的通过以下事实来实现，该装置还具有标题序列检测器（9），轨道交叉检测器（10）和中间轨道检测器（11），其连接到 标题识别单元（8），标题序列检测器（9），并生成中间轨道信号（MZC）。
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23.发明公开Track loss signal generating apparatus used in optical disc drive and optical disc drive equipped wih the apparatus, as well as optical disc drive equipped with amplitude adjusting apparatus for tracking error signal 审中-公开装置，用于产生在光盘驱动器的光盘驱动器的光盘驱动器，这样一个轨迹遗失信号，以及用于跟踪误差信号振幅调整装置
公开(公告)号：EP0927993A3
公开(公告)日：2000-12-13
申请号：EP99100079.5
申请日：1999-01-05
CPC分类号： G11B7/094 , G11B7/08541 , G11B7/0901 , G11B7/0941 , G11B7/0953
摘要： An optical disc drive equipped with a TLN signal generating apparatus is disclosed. The TLN signal generating apparatus includes a TLN signal generating circuit (112) for generating a TLN signal (track loss signal) based on signals obtained from an optical pick-up; a digitizing circuit (76) for digitizing the TLN signal by comparing it with a reference level; and a correction circuit (13,114,115,116,117) for correcting the TLN signal so that it is accurately digitized by the digitizing circuit irrespective of an offset component which is a direct current component contained in the TLN signal. The correction circuit is comprised of an offset component detecting circuit (13,17,114) for detecting a level of the offset component contained in the TLN signal; and a signal control circuit (115,116,117) for controlling, responsive to the level of the offset component detected by the offset component detecting circuit, a level of the TLN signal generated by the TLN signal generating circuit so that the level of the TLN signal will become a level which does not receive any influence from the level of the direct component. The correction circuit can also be comprised of a signal correcting circuit which amplifies an alternating current component contained in the TLN signal without eliminating a directed current component contained in the TLN signal.
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公开(公告)号：EP1028415A2
公开(公告)日：2000-08-16
申请号：EP00201403.3
申请日：1994-10-07
申请人： Sony Corporation
CPC分类号： G11B19/20 , G11B7/08505 , G11B7/08541 , G11B7/0946 , G11B19/00 , G11B19/02 , G11B19/04 , G11B19/26 , G11B19/28 , G11B20/10527 , G11B27/005 , G11B27/3063 , G11B2020/10592 , G11B2020/10916 , G11B2220/20 , G11B2220/2529 , G11B2220/2545
摘要： In a rotation servo circuit (18) for use in a shock-proof disk player employing a bulk memory (23) of a large capacity, a high speed mode and a low speed mode are prepared for driving a disk (1) in such a manner that the high speed mode is selected only upon occurrence of a track jump, and there are prepared a speed control reference clock signal of 16.9344 MHz corresponding to the high speed mode and another reference clock signal of 11.2896 MHz corresponding to the low speed mode. Normally a 1.33-fold speed play based on the clock signal of 11.2896 MHz is performed, but upon occurrence of a track jump, the clock frequency is switched to 16.9344 MHz to thereby select a 2-fold speed play, and in response to an overflow of the bulk memory, the low speed mode is selected again to resume the 1.33-fold speed play.
摘要翻译： 在采用大容量的大容量存储器（23）的防震盘播放器中使用的旋转伺服电路（18）中，准备高速模式和低速模式，用于驱动这样的盘 只有在发生轨道跳跃时才选择高速模式，并且准备了对应于高速模式的16.9344MHz的速度控制参考时钟信号和对应于低速模式的11.2896MHz的另一参考时钟信号。 通常，执行基于11.2896MHz的时钟信号的1.33倍的速度播放，但是当出现轨道跳跃时，将时钟频率切换到16.9344MHz，从而选择2倍速度播放，并且响应于溢出 的大容量存储器，再次选择低速模式以恢复1.33倍的速度播放。
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公开(公告)号：EP1026673A1
公开(公告)日：2000-08-09
申请号：EP98947958.9
申请日：1998-10-19
申请人： FUJITSU LIMITED
CPC分类号： G11B7/0938 , G11B7/00745 , G11B7/08541 , G11B7/0901
摘要： An optical recording medium driving apparatus which can obtain a tracking error signal necessary for an accurate track count. An optical recording medium driving apparatus for recording and/or reproducing data in/from an optical recording medium, where information can be recorded in plural tracks formed by land portions and groove portions provided between the land portions, based on a light emitted to the tracks. The apparatus includes a detector for detecting a position of the emitted light, a peak-hold circuit for holding a peak of a position detected signal outputted from the detector so as to output the position detected signal, a bottom-hold circuit for holding a bottom of the position detected signal so as to output the position detected signal, and a switching circuit for switching signals based on the output signals from the peak-hold circuit and bottom-hold circuit so as to output either signal.
摘要翻译： 一种光学记录介质驱动装置，其能够获得准确轨道计数所需的跟踪误差信号。 一种用于在光学记录介质中记录和/或再现数据的光学记录介质驱动装置，其中可以基于发射到轨道的光，将信息记录在由陆地部分和设置在陆地部分之间的槽部分形成的多个轨道中 。 该装置包括用于检测发射光的位置的检测器，用于保持从检测器输出的位置检测信号的峰值以便输出位置检测信号的峰值保持电路，用于保持底部的底部保持电路 以输出位置检测信号;以及切换电路，用于根据来自峰值保持电路和底部保持电路的输出信号切换信号，以输出任一信号。
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公开(公告)号：EP0803864B1
公开(公告)日：2000-03-29
申请号：EP96119218.4
申请日：1996-11-29
申请人： FUJITSU LIMITED
CPC分类号： G11B11/10576 , G11B7/08517 , G11B7/08529 , G11B7/08541 , G11B7/0901 , G11B7/0908 , G11B7/0938 , G11B7/0941 , G11B7/0945 , G11B7/0953 , G11B11/10563 , G11B11/10597 , G11B19/12
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公开(公告)号：EP0867872B1
公开(公告)日：2000-02-02
申请号：EP98108647.3
申请日：1996-11-29
申请人： FUJITSU LIMITED
CPC分类号： G11B11/10576 , G11B7/08517 , G11B7/08529 , G11B7/08541 , G11B7/0901 , G11B7/0908 , G11B7/0938 , G11B7/0941 , G11B7/0945 , G11B7/0953 , G11B11/10563 , G11B11/10597 , G11B19/12
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28.发明公开Track loss signal generating apparatus used in optical disc drive and optical disc drive equipped wih the apparatus, as well as optical disc drive equipped with amplitude adjusting apparatus for tracking error signal 审中-公开装置，用于产生在光盘驱动器的光盘驱动器的光盘驱动器，这样一个轨迹遗失信号，以及用于跟踪误差信号振幅调整装置
公开(公告)号：EP0927993A2
公开(公告)日：1999-07-07
申请号：EP99100079.5
申请日：1999-01-05
IPC分类号： G11B7/09
CPC分类号： G11B7/094 , G11B7/08541 , G11B7/0901 , G11B7/0941 , G11B7/0953
摘要： An optical disc drive equipped with a TLN signal generating apparatus is disclosed. The TLN signal generating apparatus includes a TLN signal generating circuit for generating a TLN signal (track loss signal) based on signals obtained from an optical pick-up; a digitizing circuit for digitizing the TLN signal by comparing it with a reference level; and a correction circuit for correcting the TLN signal so that it is accurately digitized by the digitizing circuit irrespective of an offset component which is a direct current component contained in the TLN signal. The correction circuit is comprised of an offset component detecting circuit for detecting a level of the offset component contained in the TLN signal; and a signal control circuit for controlling, responsive to the level of the offset component detected by the offset component detecting circuit, a level of the TLN signal generated by the TLN signal generating circuit so that the level of the TLN signal will become a level which does not receive any influence from the level of the direct component. The correction circuit can also be comprised of a signal correcting circuit which amplifies an alternating current component contained in the TLN signal without eliminating a directed current component contained in the TLN signal.
摘要翻译： 配备有TLN信号产生装置的光盘驱动器是游离缺失光盘。 的TLN信号发生装置包括：TLN信号产生电路，用于产生基于从光拾取器的信号获得一个TLN信号（轨迹丢失信号）; 一个数字化电路，用于通过将其与参考电平进行比较数字化信号TLN; 并用于校正TLN信号的校正电路也是如此它精确地设定由所述数字化电路不论偏移分量全部的是包含在所述TLN信号的直流分量进行数字化。 校正电路由偏移分量检测电路，用于检测包含在所述TLN信号中的偏移分量的电平的; 和用于控制，响应于检测电路由偏移分量检测到的偏移分量的电平的信号控制电路，由所述TLN信号生成电路生成的TLN信号的电平所以没有TLN信号的电平就会变成水平，这 没有收到直接分量的水平没有任何影响。 校正电路因此可以包括一个信号校正电路的放大交替包含在TLN信号电流分量而不消除包含在TLN信号的定向电流分量的哪一个。
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29.发明公开Tracking error detecting circuit of an optical storage apparatus 失效Spurfolgefehlerdetektionsschaltung einer optischen Speichervorrichtung
公开(公告)号：EP0867872A1
公开(公告)日：1998-09-30
申请号：EP98108647.3
申请日：1996-11-29
申请人： FUJITSU LIMITED
CPC分类号： G11B11/10576 , G11B7/08517 , G11B7/08529 , G11B7/08541 , G11B7/0901 , G11B7/0908 , G11B7/0938 , G11B7/0941 , G11B7/0945 , G11B7/0953 , G11B11/10563 , G11B11/10597 , G11B19/12
摘要： There is provided an optical storage apparatus which can properly form a tracking error signal (E2) even with respect to the presence or absence of a mirror portion due to a difference of a medium or a high speed seek. Therefore, the tracking error detection circuit (50) comprises a 2-split detector (46) for receiving the return light from said medium (72, 82) and converting into an electric signal (E5, E6); a subtracter (294) for forming the tracking error signal (E2) from a difference between photosensitive signals derived from said 2-split detector (46) and outputting; a peak holding circuit (290, 292) for detecting envelopes of the photosensitive signals from said 2-split detector (46) and outputting to said subtracter; and a switching control circuit (295) for on/off controlling an envelope detecting function by said peak holding circuit (290, 292) as necessary.
摘要翻译： 对于磁道访问，物镜的减速度由跟踪误差信号的两个点控制。 在物镜固定的情况下确定盘的偏心度，该信息用作物镜定位的偏移。 跟踪信号的包络由信号峰值保持电路控制。 当ID部分到达时，不处理聚焦信号。
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公开(公告)号：EP0810588A3
公开(公告)日：1998-03-25
申请号：EP97108533.7
申请日：1997-05-27
CPC分类号： G11B19/12 , G11B7/0037 , G11B7/08541 , G11B7/0901 , G11B7/0908 , G11B2007/0006
摘要： A disk discrimination apparatus for use in an optical disk reproducing apparatus detects a tracking error signal to discriminate between disks, and prevents reproduction of a disk which does not correspond to the reproducing apparatus. In the disk discrimination apparatus, when a second type disk having a track pitch which is smaller than that of a first type disk is played by the optical disk reproducing apparatus, a discriminator detects that the disk is not a first type disk based on an output signal of a tracking error signal generating circuit. The discriminator performs a discrimination operation by comparing the signal level of a signal passed through the tracking error signal generating circuit with a predetermined reference value. In another embodiment, the discriminator includes a counter for counting the number of zero-crossings of the signal passed through the tracking error signal generating circuit, and performs the disk discrimination using a count value of the counter. In a further embodiment, when the second type disk is played by the optical disk reproducing apparatus, the discriminator detects that the disk is not a first type disk based on an output signal of a focus sum signal.
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