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1.发明申请公开(公告)号：US20050094532A1
公开(公告)日：2005-05-05
申请号：US11005789
申请日：2004-12-07
CPC分类号： G11B7/1378 , G11B7/0908 , G11B7/127 , G11B7/1275 , G11B7/1369 , G11B7/13927 , G11B7/14 , G11B2007/0013
摘要： A plurality of optical heads each of which comprises an independent light source and optical system are provided on the same side with respect to a recording medium having a plurality of recording layers. Alternatively, with respect to at least one light source in an optical head having a single objective lens and a plurality of light sources, an optical path correction system is provided on an optical path unique to the light source, and while light emitted from one light source is focused on a specific recording layer by shifting of the objective lens, light irradiated from another light source is focused on another recording layer by the optical path correction system. Thus, information can be reproduced from or recorded in a plurality of recording layers simultaneously and an error in focusing of light onto the plurality of recording layers can be suppressed.
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公开(公告)号：US07123570B2
公开(公告)日：2006-10-17
申请号：US11052306
申请日：2005-02-07
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G11B7/0908 , G11B7/127 , G11B7/1275 , G11B7/1369 , G11B7/13927 , G11B7/14 , G11B2007/0013
摘要： A plurality of optical heads each of which comprises an independent light source and optical system are provided on the same side with respect to a recording medium having a plurality of recording layers. Alternatively, with respect to at least one light source in an optical head having a single objective lens and a plurality of light sources, an optical path correction system is provided on an optical path unique to the light source, and while light emitted from one light source is focused on a specific recording layer by shifting of the objective lens, light irradiated from another light source is focused on another recording layer by the optical path correction system. Thus, information can be reproduced from or recorded in a plurality of recording layers simultaneously and an error in focusing of light onto the plurality of recording layers can be suppressed.
摘要翻译： 相对于具有多个记录层的记录介质，每个光头都包括独立的光源和光学系统。 或者，对于具有单个物镜和多个光源的光学头中的至少一个光源，光路校正系统设置在光源独有的光路上，并且在从一个光发射的光 源通过物镜的偏移聚焦在特定记录层上，由另一光源照射的光被光路校正系统聚焦在另一记录层上。 因此，可以同时从多个记录层再现信息或记录信息，并且可以抑制将光聚焦到多个记录层上的错误。
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3.发明授权Recording/reproducing apparatus for optical information recording medium and optical head 失效用于光学信息记录介质和光学头的记录/再现装置公开(公告)号：US07075870B2
公开(公告)日：2006-07-11
申请号：US11005789
申请日：2004-12-07
IPC分类号： G11B15/52
CPC分类号： G11B7/1378 , G11B7/0908 , G11B7/127 , G11B7/1275 , G11B7/1369 , G11B7/13927 , G11B7/14 , G11B2007/0013
摘要： A plurality of optical heads each of which comprises an independent light source and optical system are provided on the same side with respect to a recording medium having a plurality of recording layers. Alternatively, with respect to at least one light source in an optical head having a single objective lens and a plurality of light sources, an optical path correction system is provided on an optical path unique to the light source, and while light emitted from one light source is focused on a specific recording layer by shifting of the objective lens, light irradiated from another light source is focused on another recording layer by the optical path correction system. Thus, information can be reproduced from or recorded in a plurality of recording layers simultaneously and an error in focusing of light onto the plurality of recording layers can be suppressed.
摘要翻译： 相对于具有多个记录层的记录介质，每个光头都包括独立的光源和光学系统。 或者，对于具有单个物镜和多个光源的光学头中的至少一个光源，光路校正系统设置在光源独有的光路上，并且在从一个光发射的光 源通过物镜的偏移聚焦在特定记录层上，由另一光源照射的光被光路校正系统聚焦在另一记录层上。 因此，可以同时从多个记录层再现信息或记录信息，并且可以抑制将光聚焦到多个记录层上的错误。
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4.发明申请Recording/reproducing apparatus for optical information recording medium and optical head 失效用于光学信息记录介质和光学头的记录/再现装置公开(公告)号：US20050135218A1
公开(公告)日：2005-06-23
申请号：US11052306
申请日：2005-02-07
CPC分类号： G11B7/1378 , G11B7/0908 , G11B7/127 , G11B7/1275 , G11B7/1369 , G11B7/13927 , G11B7/14 , G11B2007/0013
摘要： A plurality of optical heads each of which comprises an independent light source and optical system are provided on the same side with respect to a recording medium having a plurality of recording layers. Alternatively, with respect to at least one light source in an optical head having a single objective lens and a plurality of light sources, an optical path correction system is provided on an optical path unique to the light source, and while light emitted from one light source is focused on a specific recording layer by shifting of the objective lens, light irradiated from another light source is focused on another recording layer by the optical path correction system. Thus, information can be reproduced from or recorded in a plurality of recording layers simultaneously and an error in focusing of light onto the plurality of recording layers can be suppressed.
摘要翻译： 相对于具有多个记录层的记录介质，每个光头都包括独立的光源和光学系统。 或者，对于具有单个物镜和多个光源的光学头中的至少一个光源，光路校正系统设置在光源独有的光路上，并且在从一个光发射的光 源通过物镜的偏移聚焦在特定记录层上，由另一光源照射的光被光路校正系统聚焦在另一记录层上。 因此，可以同时从多个记录层再现信息或记录信息，并且可以抑制将光聚焦到多个记录层上的错误。
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公开(公告)号：US06707776B2
公开(公告)日：2004-03-16
申请号：US10266653
申请日：2002-10-07
申请人： Ken'ichi Nagata , Kenichi Nishiuchi , Eiji Ohno , Nobuo Akahira , Kenji Narumi
发明人： Ken'ichi Nagata , Kenichi Nishiuchi , Eiji Ohno , Nobuo Akahira , Kenji Narumi
IPC分类号： G11B700
CPC分类号： G11B7/24085 , G11B7/0045 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/00745 , G11B7/0938 , G11B7/126 , G11B7/24079 , G11B20/1217 , G11B27/19 , G11B27/3027 , G11B27/36 , G11B2020/10898 , G11B2020/1232 , G11B2020/1265 , G11B2020/1287 , G11B2020/1288 , G11B2220/20 , G11B2220/2537
摘要： The present invention relates to a recording and reproducing method and apparatus for an optical disk of the phase transition type that can be overwritten. According to this invention, the capacity of repeated rewriting of the optical disk is expanded by recording either non-inverted write data or inverted write data at random. The deterioration due to the repeated rewriting at a start point and an end point of the recording is suppressed by recording a synchronizing signal before the write data and/or dummy data after the write data in the way such that thermal stress is less likely to occur. A record end position can be determined precisely by detecting a stop pulse to stop recording.
摘要翻译： 本发明涉及一种可被覆盖的相变型光盘的记录和再现方法和装置。 根据本发明，通过随机记录非反相写入数据或反转写入数据来扩展光盘重复重写的能力。 通过在写入数据之前的写入数据和/或伪数据之前记录同步信号以使得不太可能发生热应力的方式来抑制由于记录的起始点和终止点处的重复重写导致的劣化 。 可以通过检测停止脉冲来停止记录来精确地确定记录结束位置。
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6.发明授权Optical information recording and reproducing system with overwrite capability and recording medium for use therewith 失效具有覆盖能力的光信息记录和再现系统以及与其一起使用的记录介质公开(公告)号：US06487151B1
公开(公告)日：2002-11-26
申请号：US08574306
申请日：1995-12-18
申请人： Ken'ichi Nagata , Kenichi Nishiuchi , Eiji Ohno , Nobuo Akahira , Kenji Narumi
发明人： Ken'ichi Nagata , Kenichi Nishiuchi , Eiji Ohno , Nobuo Akahira , Kenji Narumi
IPC分类号： G11A700
CPC分类号： G11B7/24085 , G11B7/0045 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/00745 , G11B7/0938 , G11B7/126 , G11B7/24079 , G11B20/1217 , G11B27/19 , G11B27/3027 , G11B27/36 , G11B2020/10898 , G11B2020/1232 , G11B2020/1265 , G11B2020/1287 , G11B2020/1288 , G11B2220/20 , G11B2220/2537
摘要： A recording and reproducing method and apparatus for an optical disk of the phase transition type is provided. This method comprises the steps of deciding at random to invert or not to invert write data that has a predetermined block length; inverting the write data if the decision is to invert the write data; and recording either the non-inverted write data or the inverted write data into the photo-sensitive record layer. A synchronizing signal is recorded before the write data and/or dummy data after the write data in the way such that thermal stress is less likely to occur. A record end position can be determined precisely by detecting a stop pulse.
摘要翻译： 提供了一种用于相变型光盘的记录和再现方法和装置。 该方法包括随机决定反转或不反转具有预定块长度的写入数据的步骤; 如果决定是反转写入数据，则反转写入数据; 并将非反相写入数据或反转写入数据记录到感光记录层中。 在写入数据之前的写入数据和/或伪数据之前记录同步信号，使得热应力不太可能发生。 可以通过检测停止脉冲来精确地确定记录结束位置。
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7.发明授权公开(公告)号：US06456584B1
公开(公告)日：2002-09-24
申请号：US09311635
申请日：1999-05-14
IPC分类号： G11B724
CPC分类号： G11B7/26 , G11B7/00454 , G11B7/0052 , G11B7/126 , G11B7/24038 , G11B7/243 , G11B7/252 , G11B2007/0013 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/2571 , G11B2007/25713
摘要： A multi-layer optical information recording medium has a first information layer located at the incident side for a laser beam and another information layer at the back thereof. Thus, it has a large capacity. A relationship that R1a
摘要翻译： 多层光信息记录介质具有位于激光束的入射侧的第一信息层和其背面的另一信息层。 因此，它具有很大的容量。 在记录部分和非记录部分中R1a
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公开(公告)号：US6031814A
公开(公告)日：2000-02-29
申请号：US789092
申请日：1997-01-27
申请人： Ken'ichi Nagata , Kenichi Nishiuchi , Eiji Ohno , Nobuo Akahira , Kenji Narumi
发明人： Ken'ichi Nagata , Kenichi Nishiuchi , Eiji Ohno , Nobuo Akahira , Kenji Narumi
IPC分类号： G11B7/004 , G11B7/0045 , G11B7/0055 , G11B7/006 , G11B7/007 , G11B7/013 , G11B7/09 , G11B7/125 , G11B20/12 , G11B27/19 , G11B27/30 , G11B27/36 , G11B7/00
CPC分类号： G11B7/24085 , G11B20/1217 , G11B27/19 , G11B27/3027 , G11B27/36 , G11B7/00454 , G11B7/006 , G11B7/007 , G11B7/00745 , G11B7/013 , G11B7/126 , G11B7/24079 , G11B2020/10898 , G11B2020/1232 , G11B2020/1265 , G11B2020/1287 , G11B2020/1288 , G11B2220/20 , G11B2220/2537 , G11B7/0045 , G11B7/00557 , G11B7/0938
摘要： A recording and reproducing apparatus for an optical disk of the transitional type that can be overwritten, having an optical information recording medium. The medium has a guide groove and a sector ID area. Information is recorded by irradiation with a light beam to change a state of a photo-sensitive record layer, and the recording may be stopped by the generation of a stop pulse. The stop pulse may be generated by an altered width of the guide groove before the sector ID area, or by one or more larger prepits before the sector ID area.
摘要翻译： 一种用于可被覆盖的具有光学信息记录介质的过渡型光盘的记录和再现装置。 介质具有引导槽和扇区ID区域。 通过用光束照射来记录信息以改变感光记录层的状态，并且可以通过产生停止脉冲来停止记录。 停止脉冲可以通过在扇区ID区域之前的引导槽的改变的宽度，或者在扇区ID区域之前由一个或多个较大的预凹坑产生。
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9.发明授权Data storage apparatus for recording and reproducing information on a recording medium by rotating the medium at different zone recording angular velocities and a reading angular velocity during a stand-by mode 失效数据存储装置，用于通过以不同的区域记录角速度和待机模式下的读取角速度旋转介质来在记录介质上记录和再现信息
公开(公告)号：US5768233A
公开(公告)日：1998-06-16
申请号：US778950
申请日：1997-01-06
申请人： Nobuo Akahira , Kenichi Nishiuchi , Eiji Ohno , Kenichi Nagata , Noboru Yamada
发明人： Nobuo Akahira , Kenichi Nishiuchi , Eiji Ohno , Kenichi Nagata , Noboru Yamada
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/007 , G11B19/12 , G11B19/247 , G11B19/26 , G11B19/28 , G11B20/12
CPC分类号： G11B7/00454 , G11B19/26 , G11B7/0079 , G11B7/00745
摘要： A track on the disk is divided into plural concentric zones on the radial position thereof. During recording, the angular velocity varies according to the zones accessed for recording, and the disk is driven at a rotational velocity whereby the angular velocity is constant within any single zone but decreases as the radial position of the zone of the accessed track approaches the outside circumference of the disk. During reproducing, the disk is driven at a rotational velocity whereby the angular velocity is constant in all zones. The range of change in the relative linear velocity of the head to the track is thus smaller and the change in the recording conditions is less during recording. During reproducing, there is no delay time required for rotational control of the disk, and the desired track can be more quickly accessed.
摘要翻译： 磁盘上的轨道在其径向位置被分成多个同心区域。 在记录期间，角速度根据被记录的区域而变化，并且以旋转速度驱动盘，其中角速度在任何单个区域内是恒定的，但随着被访问的轨道的区域的径向位置接近外部而减小 盘的周长。 在再现期间，以旋转速度驱动盘，其中角速度在所有区域中是恒定的。 因此，磁头与磁道的相对线速度的变化范围变小，记录时记录条件的变化较小。 在再现期间，不需要用于盘的旋转控制的延迟时间，并且可以更快速地访问期望的轨道。
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10.发明授权
公开(公告)号：US5424106A
公开(公告)日：1995-06-13
申请号：US45876
申请日：1993-04-15
申请人： Noboru Yamada , Nobuo Akahira , Kenichi Nishiuchi , Kenichi Nagata , Eiji Ohno , Shigeaki Furukawa
发明人： Noboru Yamada , Nobuo Akahira , Kenichi Nishiuchi , Kenichi Nagata , Eiji Ohno , Shigeaki Furukawa
CPC分类号： G11B7/006 , G11B7/24 , Y10S428/913 , Y10S430/146 , Y10T428/21 , Y10T428/31678
摘要： Phase-change-type optical recording medium comprises a first dielectric layer, a recording layer made of a phase change material, a second dielectric layer and a reflecting layer wherein the thicknesses of the first and second dielectric layers are determined for a given thickness of the recording layer so that the following conditions are satisfied;.DELTA.A+.DELTA.R.gtoreq.20% and .DELTA.A.gtoreq.5%wherein.DELTA.A=A(cry)-A(amo),A(cry), A(amo): light absorption rates of the recording layer in the crystal state and amorphous state, respectively,.DELTA.R=R(cry)-R(amo),R(cry) and R(amo): light reflection rates of the recording lates in the crystal state and amorphous state, respectively.
摘要翻译： 相变型光学记录介质包括第一介质层，由相变材料制成的记录层，第二介电层和反射层，其中确定第一和第二介电层的厚度为给定的厚度 记录层，以满足以下条件; DELTA A + DELTA R> / = 20％和DELTA A> / = 5％其中DELTA A = A（cry）-A（amo），A（cry），A（amo）：记录层的光吸收率 晶体状态和非晶态分别为：晶体状态和非晶态的记录层的光反射率分别为：DELTA R = R（cry）-R（amo），R（cry）和R（amo）
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