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公开(公告)号：US06456573B1
公开(公告)日：2002-09-24
申请号：US09954024
申请日：2001-09-18
申请人： Yasuhiro Ueki , Yutaka Osada , Osamu Yanagisawa , Chikashi Inokuchi , Yuuichi Kamioka , Kohjyu Konno
发明人： Yasuhiro Ueki , Yutaka Osada , Osamu Yanagisawa , Chikashi Inokuchi , Yuuichi Kamioka , Kohjyu Konno
IPC分类号： G11B509
CPC分类号： G11B27/24 , G11B7/0053 , G11B7/00718 , G11B7/24082 , G11B20/1403 , G11B27/3027 , G11B2220/216 , G11B2220/218 , G11B2220/2562
摘要： An apparatus operates for recording and reproducing information on and from a recording medium formed with a track and pre-pits. The track has a wobble. The pre-pits are in a predetermined phase relation with the wobble of the track. The apparatus includes a pickup for reproducing a signal from the recording medium. A limiter operates for limiting an amplitude of the signal reproduced by the pickup in response to a limiting level, and thereby processing the signal reproduced by the pickup into a limiting-resultant signal. A filter operates for suppressing components of the limiting-resultant signal, and thereby processing the limiting-resultant signal into a filtering-resultant signal. The components have specified frequencies, and are caused by the pre-pits. The limiting level for the limiter is generated in response to the filtering-resultant signal. A signal caused by the wobble of the groove is extracted from the filtering-resultant signal.
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2.发明授权Optical disc apparatus and method for reading information from an optical disk having tracks and spaces between the tracks on which address information is recorded 有权光盘装置和方法，用于从具有记录有地址信息的轨道之间的轨道和间隔的光盘读取信息公开(公告)号：US06912190B2
公开(公告)日：2005-06-28
申请号：US09987384
申请日：2001-11-14
申请人： Chikashi Inokuchi , Kenji Koishi , Kohjyu Konno , Yutaka Osada , Mitsuhiko Oohta , Takashi Kawai
发明人： Chikashi Inokuchi , Kenji Koishi , Kohjyu Konno , Yutaka Osada , Mitsuhiko Oohta , Takashi Kawai
CPC分类号： G11B27/24 , G11B7/005 , G11B7/007 , G11B7/00745 , G11B7/131 , G11B20/10009 , G11B2220/216 , G11B2220/218 , G11B2220/2562
摘要： An optical disc apparatus reads the address information from an optical disc which has tracks and track spaces formed between tracks. The apparatus has an optical head which irradiates the disc with light and includes tracking detectors, divided into a first detector and a second detector in a track direction, detecting the light reflected from the disc and outputting detection signals, an adjusting circuit which adjusts amplitudes of the first and second detection signals and outputs the signals at a position where the address information is recorded, a differential amplifying circuit which outputs the differential signal which is the difference between the adjusted first and second detection signals, and an address detecting circuit which detects the address information based on the differential signal. As a result, the optical disc apparatus accurately detects whether information is being recorded on a correct track and improves the reliability during recording.
摘要翻译： 光盘装置从具有在轨道之间形成的轨道和轨道空间的光盘读取地址信息。 该装置具有用光照射光盘的光头，并且包括在轨道方向上被分成第一检测器和第二检测器的跟踪检测器，检测从盘反射的光并输出检测信号;调整电路， 第一和第二检测信号并输出在地址信息被记录的位置处的信号，输出作为调整后的第一和第二检测信号之间的差的差分信号的差分放大电路和检测 基于差分信号的地址信息。 结果，光盘装置准确地检测信息是否正在记录在正确的轨道上并且提高了记录期间的可靠性。
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公开(公告)号：USRE39952E1
公开(公告)日：2007-12-25
申请号：US11223909
申请日：1999-08-20
申请人： Chikashi Inokuchi , Shigeru Furumiya , Yoshiyuki Miyabata , Yuji Hisakado , Atsushi Miyazaki , Toshiya Akagi
发明人： Chikashi Inokuchi , Shigeru Furumiya , Yoshiyuki Miyabata , Yuji Hisakado , Atsushi Miyazaki , Toshiya Akagi
IPC分类号： G11B7/00
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/0053 , G11B7/0055 , G11B7/0062 , G11B7/00718 , G11B7/1263
摘要： A power control device for controlling a power of a light source of an optical beam directed to an optical medium. The power control device includes a reflected light detector for detecting reflected light from the optical medium when irradiated by an optical beam which is following a track; an arithmetic unit for calculating from the reflected light a transmissivity of light transmitted from a disk surface to a recording layer or an amount of directed light on the recording layer of the medium; and power control means for controlling the power of the light source for emission based on a calculation result produced by the arithmetic unit.
摘要翻译： 一种用于控制指向光学介质的光束的光源的功率的功率控制装置。 功率控制装置包括反射光检测器，用于当由跟随轨道的光束照射时检测来自光学介质的反射光; 用于从反射光计算从盘表面传输到记录层的光的透射率或介质的记录层上的定向光量的运算单元; 以及功率控制装置，用于基于由运算单元产生的计算结果来控制用于发射的光源的功率。
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4.发明授权Optical disk recording/reproduction apparatus with a detection means for detecting dirt on the optical disk 失效具有用于检测光盘上的污物的检测装置的光盘记录/再现装置公开(公告)号：US07023777B2
公开(公告)日：2006-04-04
申请号：US10169985
申请日：2001-01-04
IPC分类号： G11B7/00
CPC分类号： G11B20/18 , G11B7/00375 , G11B19/04 , G11B20/10 , G11B20/12
摘要： An optical disc recording/reproducing apparatus includes: recording/reproducing means for recording/reproducing information by emitting a light beam onto a disc having a track which wobbles at a predetermined frequency; reflected light detection means for detecting the light beam reflected from the disc; wobble signal detection means for detecting a wobble amplitude signal which represents an amplitude of a signal generated from a component which is extracted from an output of the reflected light detection means and which wobbles at the predetermined frequency; and variation rate detection means for detecting dirt adhered on the disc based on a rate of a variation in the wobble amplitude signal, wherein the variation rate detection means detects the dirt based on the wobble amplitude signal before the recording/reproducing means records/reproduces the information.
摘要翻译： 一种光盘记录/再现装置，包括：记录/再现装置，用于通过将光束发射到具有以预定频率摆动的轨道的盘上来记录/再现信息; 用于检测从盘反射的光束的反射光检测装置; 摆动信号检测装置，用于检测摆动幅度信号，该摆动幅度信号表示从反射光检测装置的输出提取的分量产生的信号的幅度，并以预定频率摆动; 以及变化率检测装置，用于基于摆动振幅信号的变化率来检测附着在盘上的污垢，其中变化率检测装置在记录/再现装置记录/再现之前基于摆动振幅信号检测污物 信息。
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公开(公告)号：US5999506A
公开(公告)日：1999-12-07
申请号：US912705
申请日：1997-08-18
CPC分类号： G11B19/04 , G11B20/10009 , G11B20/18 , G11B7/005 , G11B2005/001
摘要： The data recording/reproducing device according to the present invention, in response to the detected signal output from the data error detector, repeats a reading operation to form a data from a reproduced signal. The gate signal generator includes an envelope detector and a comparator. The envelope detector has a time constant which is changed in accordance with the detected signal output from the data error detector, and forms a threshold signal that generally follows a level variation of the reproduced signal in accordance with the time constant. The comparator compares the reproduced signal and the threshold signal output from the envelope detector so as to form the gate signal.
摘要翻译： 根据本发明的数据记录/再现装置响应于从数据错误检测器输出的检测信号重复读取操作以从再生信号形成数据。 门信号发生器包括一个包络检测器和一个比较器。 包络检测器具有根据从数据误差检测器输出的检测信号而改变的时间常数，并且根据时间常数形成通常跟随再现信号的电平变化的阈值信号。 比较器比较再生信号和从包络检测器输出的阈值信号，形成门信号。
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6.发明授权公开(公告)号：US06975570B1
公开(公告)日：2005-12-13
申请号：US09806329
申请日：2000-07-26
申请人： Toyoji Gushima , Toshiya Akagi , Chikashi Inokuchi
发明人： Toyoji Gushima , Toshiya Akagi , Chikashi Inokuchi
CPC分类号： G11B20/18 , G11B20/1883 , G11B20/1889 , G11B27/3027 , G11B2220/20 , G11B2220/216 , G11B2220/2575
摘要： The sector synchronism of a timing generation section for generating data recording/reproducing timing is corrected at the address-mark detection timing of an address-mark detection section. Moreover, even if only one piece of address information having no error is not reproduced in the sector concerned, when at least one piece of address information having no error is reproduced in any of a predetermined number of sectors preceding the subject sector and at least one address mark is detected in the subject sector, the data recording/reproducing is permitted, and thus, the data is recorded/reproduced at a high speed and a high reliability even if an error rate of a physical address is deteriorated.
摘要翻译： 在地址标记检测部分的地址标记检测定时校正用于产生数据记录/再现定时的定时产生部分的扇区同步。 此外，即使只有一条没有错误的地址信息在相关的扇区中不再现，当至少一条没有错误的地址信息被再现在主题扇区之前的预定数量的扇区中的任一个中，并且至少一个 在主体扇区中检测到地址标记，允许数据记录/再现，因此，即使物理地址的错误率恶化，数据也以高速和高可靠性被记录/再现。
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公开(公告)号：US06172952B2
公开(公告)日：2001-01-09
申请号：US09095212
申请日：1998-06-10
IPC分类号： G11B509
CPC分类号： G11B27/24 , G11B7/0045 , G11B7/0053 , G11B7/007 , G11B7/00718 , G11B7/0946 , G11B20/1403 , G11B20/18 , G11B27/3027 , G11B2220/216 , G11B2220/2575
摘要： An optical disk device of the present invention performs at least one of recording and reproduction of an optical disk in which a wobble signal is included along a data-recording track, by rotating the optical disk and by scanning the track on the optical disk using an optical head. The device includes: an extraction section for extracting the wobble signal of the optical disk from an output of the optical head; a synchronization clock generation section for generating a synchronization clock signal based on the wobble signal extracted by the extraction section; and a recording/reproduction section for performing at least one of recording and reproduction of data to/from the optical disk by the synchronization clock signal generated by the synchronization clock generation section.
摘要翻译： 本发明的光盘装置通过旋转光盘并通过使用光盘扫描光盘来执行其中沿着数据记录轨道包括摆动信号的光盘的记录和再现中的至少一个 光头。 该装置包括：提取部分，用于从光头的输出中提取光盘的摆动信号; 同步时钟产生部分，用于基于由提取部分提取的摆动信号产生同步时钟信号; 以及记录/再现部分，用于通过由同步时钟产生部分产生的同步时钟信号来执行数据到/从光盘的记录和再现中的至少一个。
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8.发明授权Phase locked loop clock changeover apparatus in which the VCO is set to an initial value 失效锁相环时钟转换装置，其中VCO被设置为初始值
公开(公告)号：US5268654A
公开(公告)日：1993-12-07
申请号：US920097
申请日：1992-07-24
摘要： A clock changeover apparatus including a reference frequency divider for dividing a reference clock by a first frequency division number; a comparative frequency divider for dividing by a second frequency division number an output clock obtained by the clock changeover apparatus; a phase comparator for comparing phase of a signal of the reference frequency divider with that of the comparative frequency divider; a clock controller for changing the output clock so as to make the phase of the signal of the reference frequency divider coincident with that of the comparative frequency divider; a clock determining member which gives an initial value of the output clock to the clock controller and is capable of selecting the initial value of the output clock arbitrarily; a changeover member for effecting changeover between the first and second frequency division numbers; and a phase lock detector for monitoring whether or not the phase of the signal of the reference frequency divider coincides with that of the comparative frequency divider.
摘要翻译： 一种时钟切换装置，包括用于将参考时钟除以第一分频数的参考分频器; 比较分频器，用于将由时钟转换装置获得的输出时钟除以第二分频数; 相位比较器，用于比较参考分频器的信号与比较分频器的信号的相位; 时钟控制器，用于改变输出时钟，使得参考分频器的信号的相位与比较分频器的相位一致; 时钟确定部件，其向时钟控制器提供输出时钟的初始值，并能够任意地选择输出时钟的初始值; 用于实现第一和第二分频数之间的切换的切换部件; 以及用于监视参考分频器的信号的相位是否与比较分频器的相位一致的锁相检测器。
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9.再颁专利公开(公告)号：USRE40240E1
公开(公告)日：2008-04-15
申请号：US11493013
申请日：2000-07-26
申请人： Toyoji Gushima , Toshiya Akagi , Chikashi Inokuchi
发明人： Toyoji Gushima , Toshiya Akagi , Chikashi Inokuchi
IPC分类号： G11B7/00
CPC分类号： G11B20/18 , G11B20/1883 , G11B20/1889 , G11B27/3027 , G11B2220/20 , G11B2220/216 , G11B2220/2575
摘要： The sector synchronism of a timing generation section for generating data recording/reproducing timing is corrected at the address-mark detection timing of an address-mark detection section. Moreover, even if only one piece of address information having no error is not reproduced in the sector concerned, when at least one piece of address information having no error is reproduced in any of a predetermined number of sectors preceding the subject sector and at least one address mark is detected in the subject sector, the data recording/reproducing is permitted, and thus, the data is recorded/reproduced at a high speed and a high reliability even if an error rate of a physical address is deteriorated.
摘要翻译： 在地址标记检测部分的地址标记检测定时校正用于产生数据记录/再现定时的定时产生部分的扇区同步。 此外，即使只有一条没有错误的地址信息在相关的扇区中不再现，当至少一条没有错误的地址信息被再现在主题扇区之前的预定数量的扇区中的任一个中，并且至少一个 在主体扇区中检测到地址标记，允许数据记录/再现，因此，即使物理地址的错误率恶化，数据也以高速和高可靠性被记录/再现。
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公开(公告)号：US06950378B1
公开(公告)日：2005-09-27
申请号：US10031972
申请日：1999-07-28
IPC分类号： G11B7/0045 , G11B7/125
CPC分类号： G11B7/126 , G11B7/0045
摘要： A laser power control method according to the present invention is a method for controlling an output power of a laser 3 which is used for recording information on a recording medium 1. The method comprises steps of: detecting emitted light of the laser by a first detection section 4; obtaining a first driving current of the laser by a first control section 8 based on an output of the first detection section; detecting reflected light or transmitted light from the recording medium by a second detection section 5; and obtaining a second driving current of the laser by a second control section 12 based on an output of the second detection section. The laser is driven based on the first driving current or the second driving current while the first control section and the second control section are operated alternately such that the second control section does not operate when the first control section is operating, and the first control section does not operate when the second control section is operating. With such a structure, even when a plurality of laser powers which are switched at a high speed are required for recording of information, each laser power can be controlled so as to be an appropriate power for recording of information.
摘要翻译： 根据本发明的激光功率控制方法是用于控制用于在记录介质1上记录信息的激光器3的输出功率的方法。 该方法包括以下步骤：通过第一检测部分4检测激光的发射光; 基于第一检测部的输出，通过第一控制部8获得激光的第一驱动电流; 通过第二检测部分5检测来自记录介质的反射光或透射光; 并且基于第二检测部的输出，通过第二控制部12获得激光的第二驱动电流。 激光器基于第一驱动电流或第二驱动电流被驱动，同时第一控制部分和第二控制部分交替地操作，使得第二控制部分在第一控制部分操作时不工作，并且第一控制部分 在第二控制部分运行时不工作。 通过这样的结构，即使为了记录信息而需要高速切换的多个激光功率，也可以控制各激光功率，使其成为用于记录信息的合适的电力。
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