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1. 发明授权

US07460448B2 Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
标题翻译：光学拾取头，光学信息装置和光学信息再现方法
公开(公告)号：US07460448B2
公开(公告)日：2008-12-02
申请号：US11789106
申请日：2007-04-23
申请人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
发明人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
IPC分类号： G11B7/00
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0903 , G11B7/0941 , G11B7/0943 , G11B7/0948 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/13927 , G11B2007/0013
摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.
摘要翻译：本发明的光信息装置包括：光拾取头，包括：光源; 衍射单位; 冷凝单元; 分束器; 光检测器; 和跟踪误差信号发生器。光记录介质具有基本上以恒定间距布置的轨道。平均音高是tp。当主光束被放置在轨道上时，第一子光束和第二子光束被放置在轨道之间。跟踪误差信号发生器对从接收主波束的光接收部分输出的信号执行差分运算，产生第一推挽信号，对从光接收部分输出的信号执行差分运算接收第一子光束和第二子光束以产生第二推挽信号，并且相对于第一推挽信号和第二推挽信号执行差分算术运算以产生跟踪误差信号，当在与光记录介质的轨道正交的方向上扫描光束时，以间距tp获得的第一推挽信号的幅度波动的情况。

2. 发明申请

US20050199778A1 Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
标题翻译：光学拾取头，光学信息装置和光学信息再现方法
公开(公告)号：US20050199778A1
公开(公告)日：2005-09-15
申请号：US10646602
申请日：2003-08-22
申请人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
发明人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
IPC分类号： G11B7/09 , G11B7/00 , G11B7/005 , G11B7/085 , G11B7/095 , G11B7/131 , G11B7/1353 , G11B7/1392 , G02B7/04
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0903 , G11B7/0941 , G11B7/0943 , G11B7/0948 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/13927 , G11B2007/0013
摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.
摘要翻译：本发明的光信息装置包括：光拾取头，包括：光源; 衍射单位; 冷凝单元; 分束器; 光检测器; 和跟踪误差信号发生器。光记录介质具有基本上以恒定间距布置的轨道。平均音高是tp。当主光束被放置在轨道上时，第一子光束和第二子光束被放置在轨道之间。跟踪误差信号发生器对从接收主波束的光接收部分输出的信号执行差分运算，产生第一推挽信号，对从光接收部分输出的信号执行差分运算接收第一子光束和第二子光束以产生第二推挽信号，并且相对于第一推挽信号和第二推挽信号执行差分算术运算以产生跟踪误差信号，当在与光记录介质的轨道正交的方向上扫描光束时，以间距tp获得的第一推挽信号的幅度波动的情况。

3. 发明授权

US06882607B2 Optical head device and method for processing information based on prescribed division areas 失效
标题翻译：光头装置和基于规定分区的信息处理方法
公开(公告)号：US06882607B2
公开(公告)日：2005-04-19
申请号：US10691327
申请日：2003-10-22
申请人： Kousei Sano , Shin-ichi Kadowaki , Hiroaki Yamamoto , Ken'ichi Kasazumi , Seiji Nishino
发明人： Kousei Sano , Shin-ichi Kadowaki , Hiroaki Yamamoto , Ken'ichi Kasazumi , Seiji Nishino
IPC分类号： G11B7/09 , G11B7/095 , G11B7/13 , G11B7/135 , G11B7/00
CPC分类号： G11B7/1353 , G11B7/0943 , G11B7/0953 , G11B7/0956 , G11B7/131 , G11B7/1381 , G11B2007/13727
摘要： An optical head device includes a light source for emitting light; a collection optical system for collecting the light emitted by the light source to an information memory medium including at least one of a track having a mark or a space selectively arranged, and a track having a prescribed groove; a light detector having a plurality of detection areas for receiving the light reflected by the information memory medium and outputting a signal in accordance with a light amount of the light received; a division element for dividing the light reflected by the information memory medium and allowing the light to be received by the light detector; a switch element for receiving a first signal and a second signal, which are respectively obtained in accordance with the reflected light incident on a first prescribed area and a second prescribed area of the division element and outputting either one of the first signal or the second signal, the first and second prescribed areas being obtained by dividing the division element along at least one division line; and an information reproduction signal generator for receiving the signal output by the switch element and generating information recorded on the track. The switch element outputs either one of the first signal and the second signal in accordance with a distance and a positional relationship between a light collection point of the light output from the collection light system and the track.
摘要翻译：光头装置包括用于发光的光源; 收集光学系统，用于将由光源发射的光收集到信息存储介质中，所述信息存储介质包括具有选择性排列的标记或空间的轨道和具有规定槽的轨道中的至少一个; 具有多个检测区域的光检测器，用于接收由信息存储介质反射的光并根据所接收的光的光量输出信号; 分割元件，用于分割由信息存储介质反射的光并允许光被光检测器接收; 用于接收第一信号和第二信号的开关元件，它们分别根据入射在分割元件的第一规定区域和第二规定区域上的反射光获得并输出第一信号或第二信号所述第一规定区域和所述第二规定区域通过沿着至少一个分割线划分所述分割单元而获得; 以及信息再现信号发生器，用于接收由开关元件输出的信号并产生记录在轨道上的信息。开关元件根据从收集光系统输出的光的光收集点和轨道之间的距离和位置关系，输出第一信号和第二信号中的任一个。

4. 发明授权

US06744707B1 Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same 失效
标题翻译：光头装置，使用该装置的倾斜检测装置以及使用该装置的光信息处理装置
公开(公告)号：US06744707B1
公开(公告)日：2004-06-01
申请号：US09288304
申请日：1999-04-08
申请人： Kousei Sano , Shin-ichi Kadowaki , Hiroaki Yamamoto , Ken'ichi Kasazumi , Seiji Nishino
发明人： Kousei Sano , Shin-ichi Kadowaki , Hiroaki Yamamoto , Ken'ichi Kasazumi , Seiji Nishino
IPC分类号： G11B700
CPC分类号： G11B7/1353 , G11B7/0943 , G11B7/0953 , G11B7/0956 , G11B7/131 , G11B7/1381 , G11B2007/13727
摘要： An optical head device includes a light source for emitting light; a collection optical system for collecting the light emitted by the light source to an information memory medium including at least one of a track having a mark or a space selectively arranged, and a track having a prescribed groove; a light detector having a plurality of detection areas for receiving the light reflected by the information memory medium and outputting a signal in accordance with a light amount of the light received; a division element for dividing the light reflected by the information memory medium and allowing the light to be received by the light detector; a switch element for receiving a first signal and a second signal, which are respectively obtained in accordance with the reflected light incident on a first prescribed area and a second prescribed area of the division element and outputting either one of the first signal or the second signal, the first and second prescribed areas being obtained by dividing the division element along at least one division line, and an information reproduction signal generator for receiving the signal output by the switch element and generating information recorded on the track. The switch element outputs either one of the first signal and the second signal in accordance with a distance and a positional relationship between a light collection point of the light output from the collection light system and the track.
摘要翻译：光头装置包括用于发光的光源; 收集光学系统，用于将由光源发射的光收集到信息存储介质中，所述信息存储介质包括具有选择性排列的标记或空间的轨道和具有规定槽的轨道中的至少一个; 具有多个检测区域的光检测器，用于接收由信息存储介质反射的光并根据所接收的光的光量输出信号; 分割元件，用于分割由信息存储介质反射的光并允许光被光检测器接收; 用于接收第一信号和第二信号的开关元件，它们分别根据入射在分割元件的第一规定区域和第二规定区域上的反射光获得并输出第一信号或第二信号通过沿着至少一个分割线分割分割单元获得第一和第二规定区域，以及信息再现信号发生器，用于接收由开关元件输出的信号并产生记录在轨道上的信息。开关元件根据从收集光系统输出的光的光收集点和轨道之间的距离和位置关系，输出第一信号和第二信号中的任一个。

5. 发明授权

US06532202B1 Optical element, optical head and optical recording reproducing apparatus 有权
标题翻译：光学元件，光学头和光学记录再生装置
公开(公告)号：US06532202B1
公开(公告)日：2003-03-11
申请号：US09611575
申请日：2000-07-07
申请人： Hidenori Wada , Shin-ichi Kadowaki , Hiroaki Yamamoto , Tetsuo Saimi , Daisuke Ogata , Naoya Hotta , Sadao Mizuno
发明人： Hidenori Wada , Shin-ichi Kadowaki , Hiroaki Yamamoto , Tetsuo Saimi , Daisuke Ogata , Naoya Hotta , Sadao Mizuno
IPC分类号： G11B700
CPC分类号： G11B7/13925 , G02F1/133502 , G02F1/134309 , G02F2203/18 , G11B7/0956 , G11B7/1369 , G11B7/13927
摘要： An optical element has a phase change layer for changing the phase of light passing therethrough; a plurality of aberration correcting electrodes, arranged on one side of said phase change layer, for correcting optical aberrations, each of said aberration correcting electrodes being split into a plurality of regions; an insulating film interposed between said aberration correcting electrodes; and a specific electrode arranged on the other side of said phase change layer, and wherein: said aberration correcting electrodes, at least other than the outermost aberration correcting electrode as viewed from said phase change layer, have openings formed in prescribed positions, and each of said aberration correcting electrodes, other than the innermost aberration correcting electrode, faces said phase change layer through said openings formed in other aberration correcting electrodes.
摘要翻译：光学元件具有用于改变通过其中的光的相位的相变层; 多个像差校正电极，布置在所述相变层的一侧，用于校正光学像差，每个所述像差校正电极被分成多个区域; 介于所述像差校正电极之间的绝缘膜; 以及布置在所述相变层的另一侧的特定电极，并且其中：所述像差校正电极至少在从所述相变层观察的最外侧像差修正电极之外具有在规定位置形成的开口，除最内像素修正电极以外的所述像差校正电极通过形成在其它像差校正电极中的所述开口面向所述相变层。

6. 发明授权

US06327231B1 Optical head device with zero-cross point correction 有权
标题翻译：具有零交叉点校正的光头设备
公开(公告)号：US06327231B1
公开(公告)日：2001-12-04
申请号：US09640702
申请日：2000-08-17
申请人： Kousei Sano , Shin-ichi Kadowaki , Hiroaki Yamamoto , Ken'ichi Kasazumi , Seiji Nishino
发明人： Kousei Sano , Shin-ichi Kadowaki , Hiroaki Yamamoto , Ken'ichi Kasazumi , Seiji Nishino
IPC分类号： G11B700
CPC分类号： G11B7/1381 , G11B7/0943 , G11B7/0953 , G11B7/0956 , G11B7/131
摘要： An optical head device includes a light source for emitting at least one of a coherent beam and a quasi-monochromatic beam; a collection optical system for collecting the beam to an information memory medium having a track which has at least one mark and at least one space; a light detector having a plurality of detection areas for receiving the beam reflected by the information memory medium and outputting a signal in accordance with a light amount of the beam received; and a tracking error signal generator for receiving the signals output from the light detector and generating a tracking error signal based on the signals. The tracking error signal generator reduces a difference between a first signal amplitude and a second signal amplitude. The first signal amplitude is an absolute value of a difference between first and second signal levels. The second signal amplitude is an absolute value of a difference between the first and third signal levels. The first signal level is a value of the tracking error signal obtained when the beam emitted by the light source is radiated to a center of the track. The second and third signal levels are, respectively, a maximum value and a minimum value of the tracking error signal obtained when the information memory medium is scanned by the beam emitted by the light source in a direction perpendicular to the track.
摘要翻译：光头装置包括用于发射相干光束和准单色光束中的至少一个的光源; 收集光学系统，用于将光束收集到具有至少一个标记和至少一个空间的轨道的信息存储介质; 具有多个检测区域的光检测器，用于接收由信息存储介质反射的光束并根据所接收的光束的光量输出信号; 以及跟踪误差信号发生器，用于接收从光检测器输出的信号，并基于该信号产生跟踪误差信号。跟踪误差信号发生器减小第一信号幅度和第二信号幅度之间的差。第一信号幅度是第一和第二信号电平之差的绝对值。第二信号幅度是第一和第三信号电平之间的差的绝对值。第一信号电平是当由光源发射的光束被辐射到轨道的中心时获得的跟踪误差信号的值。第二和第三信号电平分别是当信息存储介质被光源在与光道垂直的方向上发射的光束扫描时获得的跟踪误差信号的最大值和最小值。

7. 发明授权

US06314068B1 Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same 有权
标题翻译：光头装置，使用该装置的倾斜检测装置以及使用该装置的光信息处理装置
公开(公告)号：US06314068B1
公开(公告)日：2001-11-06
申请号：US09640769
申请日：2000-08-17
申请人： Kousei Sano , Shin-ichi Kadowaki , Hiroaki Yamamoto , Ken'ichi Kasazumi , Seiji Nishino
发明人： Kousei Sano , Shin-ichi Kadowaki , Hiroaki Yamamoto , Ken'ichi Kasazumi , Seiji Nishino
IPC分类号： G11B700
CPC分类号： G11B7/1381 , G11B7/0943 , G11B7/0953 , G11B7/0956 , G11B7/131
摘要： An inclination detection apparatus is provided which includes an optical system for collecting a beam emitted by a light source onto an information memory medium. The inclination detection apparatus further includes a light detector for generating a detection signal in accordance with a light amount of the beam reflected by the information memory medium, the light detector including a first light receiving section and a second light receiving section. In addition, the inclination detection apparatus includes a signal processing section for processing the detection signal. The signal processing section generates an inclination detection signal based on a difference between a first sum signal and a second sum signal, the first sum signal being based on a sum of a first light receiving section signal and a second light receiving section signal, the second sum signal being based on a sum of a third light receiving section signal and a fourth light receiving section signal. Moreover, the signal processing section generates a tracking error signal based on a difference between a fifth light receiving section signal and a sixth light receiving section signal.
摘要翻译：提供了一种倾斜检测装置，其包括用于将由光源发射的光束收集到信息存储介质上的光学系统。倾斜检测装置还包括光检测器，用于根据由信息存储介质反射的光束的光量产生检测信号，光检测器包括第一光接收部分和第二光接收部分。此外，倾斜检测装置包括用于处理检测信号的信号处理部。信号处理部分基于第一和信号和第二和信号之间的差产生倾斜检测信号，第一和信号基于第一光接收部分信号和第二光接收部分信号的和，第二和和信号基于第三光接收部分信号和第四光接收部分信号的和。此外，信号处理部分基于第五光接收部分信号和第六光接收部分信号之间的差产生跟踪误差信号。

8. 发明授权

US07558162B2 Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
公开(公告)号：US07558162B2
公开(公告)日：2009-07-07
申请号：US11981487
申请日：2007-10-31
申请人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
发明人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
IPC分类号： G11B7/00
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0903 , G11B7/0941 , G11B7/0943 , G11B7/0948 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/13927 , G11B2007/0013
摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

9. 发明申请

US20080259750A1 Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
公开(公告)号：US20080259750A1
公开(公告)日：2008-10-23
申请号：US11981236
申请日：2007-10-31
申请人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
发明人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
IPC分类号： G11B7/00
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0903 , G11B7/0941 , G11B7/0943 , G11B7/0948 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/13927 , G11B2007/0013
摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

10. 发明授权

US07034980B2 Optical element, optical head, optical recording reproducing apparatus and optical recording/ reproducing method 有权
标题翻译：光学元件，光学头，光学记录再现装置和光学记录/再现方法
公开(公告)号：US07034980B2
公开(公告)日：2006-04-25
申请号：US11203914
申请日：2005-08-15
申请人： Hidenori Wada , Tetsuo Saimi , Daisuke Ogata , Seiji Nishino , Hiroaki Yamamoto , Shin-ichi Kadowaki , Yoshiaki Komma
发明人： Hidenori Wada , Tetsuo Saimi , Daisuke Ogata , Seiji Nishino , Hiroaki Yamamoto , Shin-ichi Kadowaki , Yoshiaki Komma
IPC分类号： G02F1/03 , G02F1/01 , G02F1/00 , G02F1/13 , G11B7/00
CPC分类号： G11B7/13925 , G02F2203/18 , G11B7/0948 , G11B7/1369 , G11B7/13927 , G11B2007/0013
摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.
摘要翻译：本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

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