公开(公告)号：US20110069599A1

公开(公告)日：2011-03-24

申请号：US12993599

申请日：2009-05-18

申请人： Kenji Narumi ,  Masahiro Birukawa ,  Rie Kojima ,  Eiichi Ito

发明人： Kenji Narumi ,  Masahiro Birukawa ,  Rie Kojima ,  Eiichi Ito

IPC分类号： G11B7/135 ,  G11B7/00 ,  G11B7/26

CPC分类号： G11B7/1387 ,  G11B7/094 ,  G11B7/0956 ,  G11B7/24038 ,  G11B7/2578

摘要： An optical information recording and/or reproducing apparatus comprises: a focusing unit (11) which collects generated near-field light on an optical disc (1); a first detector (17) which receives light reflected by the optical disc (1) and outputs an electric signal according to the quantity of the received light; and a distance control circuit (22) which controls the distance between the focusing unit (11) and a light entrance surface of the optical disc (1), using the electric signal that is output from the first detector (17), and the optical disc (1) has at least N (N is an integer of 2 or greater) number of information layers, and a distance d0 from the light entrance surface to a first information layer which is most distant from the light entrance surface and a distance dn from the light entrance surface to an Nth information layer which is closest to the light entrance surface satisfy the relationship of dn≧d0×(1/25). As a result, servo control can be accurately performed regardless which information layer, out of a plurality of information layers of an optical disc, information is recorded to or reproduced from.

摘要翻译： 光信息记录和/或再现装置包括：聚焦单元（11），其收集在光盘（1）上产生的近场光; 第一检测器（17），其接收由所述光盘（1）反射的光并根据所接收的光量输出电信号; 以及使用从第一检测器（17）输出的电信号来控制聚焦单元（11）和光盘（1）的光入射面之间的距离的距离控制电路（22），并且光学 盘（1）具有至少N（N是2以上的整数）的信息层数，以及从光入射面到距离光入射面最远的第一信息层的距离d0，距离dn 从光入射面到最靠近光入射面的第N信息层满足dn≥d0×（1/25）的关系。 结果，无论光盘的多个信息层中的哪个信息层的信息被记录或从其再现，都可以精确地执行伺服控制。

公开(公告)号：US08130623B2

公开(公告)日：2012-03-06

申请号：US12993599

申请日：2009-05-18

申请人： Kenji Narumi ,  Masahiro Birukawa ,  Rie Kojima ,  Eiichi Ito

发明人： Kenji Narumi ,  Masahiro Birukawa ,  Rie Kojima ,  Eiichi Ito

IPC分类号： G11B7/135

CPC分类号： G11B7/1387 ,  G11B7/094 ,  G11B7/0956 ,  G11B7/24038 ,  G11B7/2578

摘要： An optical information recording and/or reproducing apparatus comprises: a focusing unit (11) which collects generated near-field light on an optical disc (1); a first detector (17) which receives light reflected by the optical disc (1) and outputs an electric signal according to the quantity of the received light; and a distance control circuit (22) which controls the distance between the focusing unit (11) and a light entrance surface of the optical disc (1), using the electric signal that is output from the first detector (17), and the optical disc (1) has at least N (N is an integer of 2 or greater) number of information layers, and a distance d0 from the light entrance surface to a first information layer which is most distant from the light entrance surface and a distance dn from the light entrance surface to an Nth information layer which is closest to the light entrance surface satisfy the relationship of dn≧d0×(1/25). As a result, servo control can be accurately performed regardless which information layer, out of a plurality of information layers of an optical disc, information is recorded to or reproduced from.

摘要翻译： 光信息记录和/或再现装置包括：聚焦单元（11），其收集在光盘（1）上产生的近场光; 第一检测器（17），其接收由所述光盘（1）反射的光并根据所接收的光量输出电信号; 以及使用从第一检测器（17）输出的电信号来控制聚焦单元（11）和光盘（1）的光入射面之间的距离的距离控制电路（22），并且光学 盘（1）具有至少N（N是2以上的整数）的信息层数，以及从光入射面到距离光入射面最远的第一信息层的距离d0，距离dn 从光入射面到最靠近光入射面的第N信息层满足dn≥d0×（1/25）的关系。 结果，无论光盘的多个信息层中的哪个信息层的信息被记录或从其再现，都可以精确地执行伺服控制。

公开(公告)号：US08526293B2

公开(公告)日：2013-09-03

申请号：US12682828

申请日：2009-06-12

申请人： Rie Kojima ,  Masahiro Birukawa ,  Kenji Narumi ,  Noboru Yamada

发明人： Rie Kojima ,  Masahiro Birukawa ,  Kenji Narumi ,  Noboru Yamada

IPC分类号： G11B3/70 ,  G11B5/84 ,  G11B7/26

CPC分类号： G11B7/1387 ,  G11B7/00454 ,  G11B7/006 ,  G11B7/08511 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/2433 ,  G11B7/2578 ,  G11B7/266 ,  G11B2007/0013 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/2571 ,  G11B2007/25715

摘要： The information recording medium (100) of the present invention includes: an information layer (110) including a recording layer (115) capable of changing its phase containing at least one selected from Ge—Te, Sb—Te and Ge—Sb, and two or more dielectric layers (117, 118) disposed on the optical beam incident side with respect to the recording layer (115); and a transparent layer (102) disposed on the optical beam incident side with respect to the information layer (110) adjacent to the information layer, made of a transparent material with respect to the optical beam, and having a refractive index n of 1.75 or more. When two dielectric layers (117, 118) from the near side to the transparent layer (102) each are referred to as a dielectric layer b (118) and a dielectric layer a (117) from the optical beam incident side among the two or more dielectric layers (117, 118), a relationship of the refractive index n of the transparent layer 102, a refractive index nb of the dielectric layer b (118) and a refractive index na of the dielectric layer a satisfies nb 1 by irradiation with optical beam.

摘要翻译： 本发明的信息记录介质（100）包括：信息层（110），包括能够改变其含有选自Ge-Te，Sb-Te和Ge-Sb中的至少一种的相的记录层（115），以及 设置在相对于记录层（115）的光束入射侧的两个或更多个电介质层（117,118）; 以及相对于信息层（110）设置在光束入射侧的相对于光束由透明材料制成的透明层（102），并且折射率n为1.75或 更多。 当从近侧到透明层（102）的两个电介质层（117,118）各自被称为介电层b（118）和电介质层a（117）时，来自光束入射侧的两个或 更多的电介质层（117,118），透明层102的折射率n，电介质层b（118）的折射率nb和电介质层a的折射率na之间的关系满足nb 1的光学系统来记录或再现信息。

公开(公告)号：US20100220574A1

公开(公告)日：2010-09-02

申请号：US12682828

申请日：2009-06-12

申请人： Rie Kojima ,  Masahiro Birukawa ,  Kenji Narumi ,  Noboru Yamada

发明人： Rie Kojima ,  Masahiro Birukawa ,  Kenji Narumi ,  Noboru Yamada

IPC分类号： G11B7/24 ,  G11B7/00

CPC分类号： G11B7/1387 ,  G11B7/00454 ,  G11B7/006 ,  G11B7/08511 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/2433 ,  G11B7/2578 ,  G11B7/266 ,  G11B2007/0013 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/2571 ,  G11B2007/25715

摘要： The information recording medium (100) of the present invention includes: an information layer (110) including a recording layer (115) capable of changing its phase containing at least one selected from Ge—Te, Sb—Te and Ge—Sb, and two or more dielectric layers (117, 118) disposed on the optical beam incident side with respect to the recording layer (115); and a transparent layer (102) disposed on the optical beam incident side with respect to the information layer (110) adjacent to the information layer, made of a transparent material with respect to the optical beam, and having a refractive index n of 1.75 or more. When two dielectric layers (117, 118) from the near side to the transparent layer (102) each are referred to as a dielectric layer b (118) and a dielectric layer a (117) from the optical beam incident side among the two or more dielectric layers (117, 118), a relationship of the refractive index n of the transparent layer 102, a refractive index nb of the dielectric layer b (118) and a refractive index na of the dielectric layer a satisfies nb 1 by irradiation with optical beam.

摘要翻译： 本发明的信息记录介质（100）包括：信息层（110），包括能够改变其含有选自Ge-Te，Sb-Te和Ge-Sb中的至少一种的相的记录层（115），以及 设置在相对于记录层（115）的光束入射侧的两个或更多个电介质层（117,118）; 以及相对于信息层（110）设置在光束入射侧的相对于光束由透明材料制成的透明层（102），并且折射率n为1.75或 更多。 当从近侧到透明层（102）的两个电介质层（117,118）各自被称为介电层b（118）和电介质层a（117）时，来自光束入射侧的两个或 更多的电介质层（117,118），透明层102的折射率n，电介质层b（118）的折射率nb和电介质层a的折射率na之间的关系满足nb 1的光学系统来记录或再现信息。

公开(公告)号：US20110310719A1

公开(公告)日：2011-12-22

申请号：US13148756

申请日：2010-01-29

申请人： Kenji Narumi ,  Masahiro Birukawa

发明人： Kenji Narumi ,  Masahiro Birukawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0908 ,  G11B7/08511 ,  G11B7/0945 ,  G11B7/1374 ,  G11B7/1387 ,  G11B2007/13727

摘要： An optical information reproducing device is provided with a light focusing unit (8) for generating near-field light, a signal quality measuring circuit (22) for measuring reproduction signal quality of the optical information recording medium using the near-field light generated by the light focusing unit, a gap length determining circuit (17a) for determining a gap length between the light focusing unit and a surface of the optical information recording medium as a set value based on a measurement result on the reproduction signal quality in the signal quality measuring circuit, and a gap control circuit (24) for controlling a gap between the light focusing unit and the surface of the optical information recording medium based on the set value determined in the gap length determining circuit. Information is reproduced from the optical information recording medium using the near-field light generated by the light focusing unit.

摘要翻译： 光信息再现装置具有用于产生近场光的光聚焦单元（8）;信号质量测量电路（22），用于使用由所述光场信号产生的近场光测量光信息记录介质的再现信号质量 光聚焦单元，用于基于对信号质量测量中的再现信号质量的测量结果来确定光聚焦单元和光信息记录介质的表面之间的间隙长度作为设定值的间隙长度确定电路（17a） 电路，以及用于基于在间隙长度确定电路中确定的设定值来控制光聚焦单元和光信息记录介质的表面之间的间隙的间隙控制电路（24）。 使用由光聚焦单元产生的近场光从光信息记录介质再现信息。

公开(公告)号：US20100232264A1

公开(公告)日：2010-09-16

申请号：US12377500

申请日：2007-10-15

申请人： Kenji Narumi ,  Masahiro Birukawa

发明人： Kenji Narumi ,  Masahiro Birukawa

IPC分类号： G11B7/00

CPC分类号： G11B7/1378 ,  G11B7/08511 ,  G11B7/0908 ,  G11B7/0948 ,  G11B7/1387 ,  G11B2007/0013

摘要： A distance control circuit (23) keeps constant the distance between a condensing member (11) and the surface of an optical disk (1) using return light from a region where near field light is generated. Under that state, a focus control circuit (27) focus-controls the focus position of the near field light to sustain it at the position of an information layer using reflection light from the information layer. Consequently, information can be recorded and reproduced stably with the near field light without causing erroneous erasure or destruction of information recorded on the information layer (2) even if locally varying irregularities occur on the surface of the optical disk (1) or uneven thickness exists in the protective layer (3).

摘要翻译： 使用来自近场光的区域的返回光，距离控制电路（23）保持聚光构件（11）与光盘（1）的表面之间的距离。 在该状态下，聚焦控制电路（27）利用来自信息层的反射光对近场光的聚焦位置进行聚焦控制，以将其维持在信息层的位置。 因此，即使在光盘（1）的表面上发生局部变化的不规则或存在不均匀厚度，也可以利用近场光稳定地记录和再现信息，而不会引起记录在信息层（2）上的信息的错误擦除或破坏 在保护层（3）中。

公开(公告)号：US08451699B2

公开(公告)日：2013-05-28

申请号：US13580406

申请日：2011-02-23

申请人： Kenji Narumi ,  Masahiro Birukawa

发明人： Kenji Narumi ,  Masahiro Birukawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/0908 ,  G11B7/1387

摘要： The present invention accurately operates a tilt servo even if a gap servo is operated with a small gap. A condensing unit (102) generates a near-field light and condenses a laser beam on an optical disk (1), a light quantity detection unit (104) detects light quantity of return light from an area where the near-field light is generated, a gap control unit (105) controls a gap between the condensing unit (102) and the optical disk (1) based on the light quantity of the return light, a tilt calculation unit (106) calculates, in a state of controlling the gap, an inclination amount between the condensing unit (102) and the optical disk (1) based on the light quantity of the return light, a tilt error signal generation unit (107) generates from the inclination amount a tilt error signal, which is a signal from which a fluctuation component of the return light generated due to decentering of the optical disk (1) is removed, and a tilt control unit (108) controls the inclination between the condensing unit (102) and the optical disk (1) based on the tilt error signal.

摘要翻译： 即使间隙伺服以小的间隙操作，本发明也能精确地操作倾斜伺服。 聚光单元（102）产生近场光并将激光束聚光在光盘（1）上，光量检测单元（104）检测来自产生近场光的区域的返回光的光量 ，间隙控制单元（105）基于返回光的光量来控制聚光单元（102）和光盘（1）之间的间隙，倾斜计算单元（106）在控制 间隙，基于返回光的光量在聚光单元（102）和光盘（1）之间的倾斜量，倾斜误差信号生成单元（107）从倾斜量产生倾斜误差信号，倾斜误差信号是 去除由于光盘（1）的偏心而产生的返回光的波动分量的信号，并且倾斜控制单元（108）控制聚光单元（102）和光盘（1）之间的倾斜度， 基于倾斜误差信号。

公开(公告)号：US08422341B2

公开(公告)日：2013-04-16

申请号：US12596937

申请日：2008-04-22

申请人： Kenji Narumi ,  Masahiro Birukawa

发明人： Kenji Narumi ,  Masahiro Birukawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/00736 ,  G11B7/08511 ,  G11B7/1387

摘要： An apparatus 100 according to the present invention is designed to read and/or write data from/on an information recording medium 1 using near-field light. The apparatus 100 includes: a light source 3 for emitting laser light; a condensing section 7 for producing the near-field light based on the laser light; a detecting section 22, 23 for detecting the relative positions of the condensing section 7 and the information recording medium 1; and a control section 14 for controlling the position of the condensing section 7. In starting a gap servo operation, the control section 14 controls the position of the condensing section 7 so that the gap servo operation is started at a different location on the information recording medium 1 from any other location where the gap servo operation has ever been started.

摘要翻译： 根据本发明的设备100被设计为使用近场光从信息记录介质1上读/写数据。 装置100包括：用于发射激光的光源3; 用于产生基于激光的近场光的聚光部分7; 用于检测冷凝部分7和信息记录介质1的相对位置的检测部分22,23; 以及用于控制冷凝部分7的位置的控制部分14.在开始间隙伺服操作时，控制部分14控制冷凝部分7的位置，使得间隙伺服操作在信息记录的不同位置开始 任何其他间隙伺服操作已经开始的位置的介质1。

公开(公告)号：US20100118665A1

公开(公告)日：2010-05-13

申请号：US12596937

申请日：2008-04-22

申请人： Kenji Narumi ,  Masahiro Birukawa

发明人： Kenji Narumi ,  Masahiro Birukawa

IPC分类号： G11B11/00

CPC分类号： G11B7/0945 ,  G11B7/00736 ,  G11B7/08511 ,  G11B7/1387

摘要： An apparatus 100 according to the present invention is designed to read and/or write data from/on an information recording medium 1 using near-field light. The apparatus 100 includes: a light source 3 for emitting laser light; a condensing section 7 for producing the near-field light based on the laser light; a detecting section 22, 23 for detecting the relative positions of the condensing section 7 and the information recording medium 1; and a control section 14 for controlling the position of the condensing section 7. In starting a gap servo operation, the control section 14 controls the position of the condensing section 7 so that the gap servo operation is started at a different location on the information recording medium 1 from any other location where the gap servo operation has ever been started.

摘要翻译： 根据本发明的设备100被设计为使用近场光从信息记录介质1上读/写数据。 装置100包括：用于发射激光的光源3; 用于产生基于激光的近场光的聚光部分7; 用于检测冷凝部分7和信息记录介质1的相对位置的检测部分22,23; 以及用于控制冷凝部分7的位置的控制部分14.在开始间隙伺服操作时，控制部分14控制冷凝部分7的位置，使得间隙伺服操作在信息记录的不同位置开始 任何其他间隙伺服操作已经开始的位置的介质1。

公开(公告)号：US08130625B2

公开(公告)日：2012-03-06

申请号：US12377500

申请日：2007-10-15

申请人： Kenji Narumi ,  Masahiro Birukawa

发明人： Kenji Narumi ,  Masahiro Birukawa

IPC分类号： G11B7/135 ,  G11B7/00

CPC分类号： G11B7/1378 ,  G11B7/08511 ,  G11B7/0908 ,  G11B7/0948 ,  G11B7/1387 ,  G11B2007/0013

摘要： A distance control circuit keeps constant the distance between a condensing member and the surface of an optical disk using return light from a region where near field light is generated. Additionally, a focus control circuit controls the focus position of the near field light to sustain it at the position of an information layer using reflection light from the information layer.

摘要翻译： 使用来自近场光的区域的返回光，距离控制电路保持聚光构件与光盘表面之间的距离恒定。 此外，聚焦控制电路使用来自信息层的反射光来控制近场光的焦点位置以维持信息层的位置。