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1. 发明授权

US09812161B2 Resistive temperature sensors for improved asperity, head-media spacing, and/or head-media contact detection 有权
公开(公告)号：US09812161B2
公开(公告)日：2017-11-07
申请号：US15251663
申请日：2016-08-30
申请人： Seagate Technology LLC
发明人： Manuel Charles Anaya-Dufresne , Brian William Karr , Gary Joseph Kunkel , Zhen Wei
IPC分类号： G11B21/02 , G11B5/60 , G11B20/10 , G01K13/00 , G11B5/024 , G11B5/31 , G11B27/36 , G11B7/09 , G11B7/121
CPC分类号： G11B5/607 , G01K13/00 , G11B5/024 , G11B5/3133 , G11B5/6011 , G11B5/6076 , G11B7/0948 , G11B7/121 , G11B20/10 , G11B27/36
摘要： A sensor supported by a head transducer has a temperature coefficient of resistance (TCR) and a sensor resistance. The sensor operates at a temperature above ambient and is responsive to changes in sensor-medium spacing. Conductive contacts connected to the sensor have a contact resistance and a cross-sectional area adjacent to the sensor larger than that of the sensor, such that the contact resistance is small relative to the sensor resistance and negligibly contributes to a signal generated by the sensor. A multiplicity of head transducers each support a TCR sensor and a power source can supply bias power to each sensor of each head to maintain each sensor at a fixed temperature above an ambient temperature in the presence of heat transfer changes impacting the sensors. A TCR sensor of a head transducer can include a track-oriented TCR sensor wire for sensing one or both of asperities of the medium.

2. 发明授权

US5572500A Optical filter with light transmittance dependency on incident angle 失效
标题翻译：滤光片，透光率取决于入射角
公开(公告)号：US5572500A
公开(公告)日：1996-11-05
申请号：US340874
申请日：1994-11-15
申请人： Tomoyoshi Ikeya , Mitsuru Itamochi , Hidetoshi Yokosawa
发明人： Tomoyoshi Ikeya , Mitsuru Itamochi , Hidetoshi Yokosawa
IPC分类号： G02B5/28 , G11B7/125 , G11B7/135 , G11B7/16 , G11B7/121
CPC分类号： G02B5/285 , G11B7/1381 , G11B2007/13727
摘要： An optical reproducing system has a first optical path from a light source to an optical disc, and a second optical path from the optical disc to a photodetector. An objective lens is provided in the first optical path for forming an a non-collimated beam applied to the optical disc. A profile conversion filter having an angle dependent transmittance characteristic is provided between the objective lens and the optical disc.
摘要翻译：光学再现系统具有从光源到光盘的第一光路以及从光盘到光电检测器的第二光路。在第一光路中设置物镜以形成施加到光盘的非准直光束。在物镜和光盘之间设置具有角度依赖透射特性的轮廓转换滤波器。

3. 发明授权

US09251836B2 Optical disc apparatus, sheet member, and method for cleaning objective lens 有权
标题翻译：光盘装置，片材，以及清洁物镜的方法
公开(公告)号：US09251836B2
公开(公告)日：2016-02-02
申请号：US14370125
申请日：2013-06-03
申请人： Panasonic Corporation
发明人： Hideki Nakata , Kousei Sano , Hideki Aikoh
IPC分类号： G11B33/14 , G11B7/121 , G11B17/056
CPC分类号： G11B7/121 , G11B17/056 , G11B33/1446
摘要： The present application discloses optical disc apparatus including: drive mechanism for rotating medium including processing surface to be subjected optical information process; housing for storing drive mechanism; tray mechanism for displacing medium between storage position, at which medium is stored in housing, and ejection position, at which medium is ejected from housing; at least one objective lens for condensing light onto processing surface of medium situated at storage position to perform information process; and first displacement mechanism for displacing at least one objective lens along processing surface between first position and second position which is more distant from rotational center of medium rotated by the drive mechanism than first position is. Tray mechanism defines at least one opening in position closer to second position than first position.
摘要翻译：本申请公开了一种光盘装置，包括：包括要进行光信息处理的处理面的旋转介质的驱动机构; 存储驱动机构的壳体; 托盘机构，用于在存储位置之间移动介质，介质存储在壳体中;以及喷射位置，介质从壳体排出; 至少一个物镜，用于将光聚光到位于存储位置的介质的处理表面上以进行信息处理; 以及用于使第一位置和第二位置之间沿着处理表面移动至少一个物镜的第一位移机构，其比由驱动机构旋转的介质的旋转中心比第一位置更远。托盘机构限定比第一位置更靠近第二位置的至少一个开口。

4. 发明申请

US20140380342A1 OPTICAL DISC APPARATUS, SHEET MEMBER, AND METHOD FOR CLEANING OBJECTIVE LENS 有权
标题翻译：光盘设备，片材会员和清洁目标镜头的方法
公开(公告)号：US20140380342A1
公开(公告)日：2014-12-25
申请号：US14370125
申请日：2013-06-03
申请人： Panasonic Corporation
发明人： Hideki Nakata , Kousei Sano , Hideki Aikoh
IPC分类号： G11B7/121
CPC分类号： G11B7/121 , G11B17/056 , G11B33/1446
摘要： The present application discloses optical disc apparatus including: drive mechanism for rotating medium including processing surface to be subjected optical information process; housing for storing drive mechanism; tray mechanism for displacing medium between storage position, at which medium is stored in housing, and ejection position, at which medium is ejected from housing; at least one objective lens for condensing light onto processing surface of medium situated at storage position to perform information process; and first displacement mechanism for displacing at least one objective lens along processing surface between first position and second position which is more distant from rotational center of medium rotated by the drive mechanism than first position is. Tray mechanism defines at least one opening in position closer to second position than first position.
摘要翻译：本申请公开了一种光盘装置，包括：包括要进行光信息处理的处理面的旋转介质的驱动机构; 存储驱动机构的壳体; 托盘机构，用于在存储位置之间移动介质，介质存储在壳体中;以及喷射位置，介质从壳体排出; 至少一个物镜，用于将光聚光到位于存储位置的介质的处理表面上以进行信息处理; 以及用于使第一位置和第二位置之间沿着处理表面移动至少一个物镜的第一位移机构，其比由驱动机构旋转的介质的旋转中心比第一位置更远。托盘机构限定比第一位置更靠近第二位置的至少一个开口。

5. 发明授权

US08887183B2 Optical disc device and lens cleaner 有权
标题翻译：光盘设备和镜头清洁剂
公开(公告)号：US08887183B2
公开(公告)日：2014-11-11
申请号：US13817936
申请日：2011-11-18
申请人： Asayuki Matsumura , Tomio Yamamoto , Akihiko Nishioka , Masahiro Inagaki
发明人： Asayuki Matsumura , Tomio Yamamoto , Akihiko Nishioka , Masahiro Inagaki
IPC分类号： G11B17/04 , G11B23/03 , G11B7/121
CPC分类号： G11B7/121 , G11B23/0021 , G11B23/0327
摘要： An optical disc device of the present invention comprises an insertion detection optical sensor which detects insertion of an optical disc based on light emitted from a first light emitting element to a first light receiving element being blocked, and an ejection detection optical sensor provided on the downstream side in the carry-in direction to the insertion detection optical sensor to detect ejection of the optical disc based on light emitted from a second light emitting element to a second light receiving element being blocked. The optical disc device is structured such that, in a state that the optical disc is attached onto the turntable, when the light of the first light emitting element is blocked and the light of the second light emitting element is not blocked, the optical disc device recognizes that a lens cleaner is attached onto the turntable as the optical disc, and the optical disc device performs a cleaning operation.
摘要翻译：本发明的光盘装置包括：插入检测光学传感器，其基于从第一发光元件发射的光到被阻挡的第一受光元件检测光盘的插入;以及喷射检测光学传感器，设置在下游一侧到插入检测光学传感器的携带方向，以基于从第二发光元件发射到被阻挡的第二光接收元件的光来检测光盘的喷射。光盘装置被构造成使得在将光盘安装到转台上的状态下，当第一发光元件的光被遮挡并且第二发光元件的光未被阻挡时，光盘装置认识到透镜清洁器作为光盘附接到转台上，并且光盘装置执行清洁操作。

6. 发明申请

US20140328152A1 ONBOARD OPTICAL DISC DEVICE 有权
标题翻译： ONBOARD光盘设备
公开(公告)号：US20140328152A1
公开(公告)日：2014-11-06
申请号：US14358530
申请日：2012-11-15
申请人： Panasonic Corporation
发明人： Atsutoshi Naraki
IPC分类号： G11B7/121
CPC分类号： G11B7/121 , G11B33/144
摘要： When the temperature of a main CPU detected by a temperature sensor exceeds a set temperature, a sub CPU drives a drive unit of an optical disc under the condition where the operation of the main CPU is suspended to stop the rise in temperature caused by the main CPU. In this case, cooling of the main CPU advances by the wind based on the driving of the optical disc, and as a result, the suspension time of data reading from the optical disc or data writing to the optical disc until the main CPU restarts can be shortened.
摘要翻译：当由温度传感器检测到的主CPU的温度超过设定温度时，副CPU在主CPU的操作被暂停的情况下驱动光盘的驱动单元，以停止由主控制器引起的温度升高中央处理器。在这种情况下，主CPU的冷却基于光盘的驱动而风向前进，结果，数据从光盘读取的停止时间或数据写入到光盘直到主CPU重新启动缩短。

7. 发明申请

US20120300605A1 CIRCUIT FOR PREVENTING DESTRUCTION OF SEMICONDUCTOR LASER ELEMENT, AND OPTICAL DISC DEVICE PROVIDED WITH THE CIRCUIT 失效
标题翻译：用于防止半导体激光元件破坏的电路，以及电路提供的光盘设备
公开(公告)号：US20120300605A1
公开(公告)日：2012-11-29
申请号：US13449740
申请日：2012-04-18
申请人： Tsutomu ASAI
发明人： Tsutomu ASAI
IPC分类号： G11B7/121 , H01S3/00
CPC分类号： H01S5/042 , G11B7/1263 , H01S5/06825
摘要： A circuit for preventing destruction of a semiconductor laser element of an optical disc device comprises a light-emission-directing circuit part for outputting a light-emission-directing signal for directing the semiconductor laser element to emit light; a voltage-monitoring circuit part for monitoring a light-emitting voltage and, when a judgment is made that the light-emitting voltage is normal, outputting a light-emission-permitting signal for permitting the semiconductor laser element to emit light, the light-emitting voltage being supplied from a power source for the semiconductor laser element to an optical-output-controlling circuit part in order to cause the semiconductor laser element to emit light; and a light-emission-permitting circuit part for using the optical-output-controlling circuit part to cause the semiconductor laser element to emit light only when the light-emission-directing signal and the light-emission-permitting signal are inputted.
摘要翻译：用于防止光盘装置的半导体激光元件的破坏的电路包括：发光引导电路部分，用于输出用于引导半导体激光元件发光的发光引导信号; 用于监视发光电压的电压监视电路部分，当判断为发光电压正常时，输出允许半导体激光元件发光的发光许可信号，从半导体激光元件的电源向光输出控制电路部供给发光电压，使半导体激光元件发光; 以及发光允许电路部，其仅在输入发光指示信号和发光允许信号时，使用光输出控制电路部使半导体激光元件发光。

8. 发明授权

US07020063B2 Optical pickup 失效
公开(公告)号：US07020063B2
公开(公告)日：2006-03-28
申请号：US10419667
申请日：2003-04-21
申请人： Tadashi Adachi , Hirokazu Furuse , Masayoshi Sugawara
发明人： Tadashi Adachi , Hirokazu Furuse , Masayoshi Sugawara
IPC分类号： G11B7/121 , G11B7/135 , G02B7/04 , H01J3/14
CPC分类号： G11B7/1365 , G11B7/1275 , G11B2007/0006
摘要： An optical pickup comprising: a diffraction grating, a beam splitter and laser beam guiding optical components that change direction of laser beams, which are placed on a light path constituted by a semiconductor laser that emits dual wavelength laser beams and an information recording surface of an optical disk, wherein a wavelength plate is provided on a light path between said diffraction grating and said semiconductor laser so that a laser beam irradiated on the recording surface of said optical disk becomes an elliptically polarized (including circularly polarized) beam or a beam having a polarizing plane that produces an angle of 30–60 degrees relative to a radius direction.

9. 发明授权

US06920091B2 Optical reproduction apparatus and optical recording and reproduction apparatus 失效
标题翻译：光学再现装置和光学记录和再现装置
公开(公告)号：US06920091B2
公开(公告)日：2005-07-19
申请号：US09771705
申请日：2001-01-30
申请人： Kiichi Ueyanagi
发明人： Kiichi Ueyanagi
IPC分类号： G11B7/135 , G11B7/09 , G11B7/125 , G11B7/24 , G11B7/121
CPC分类号： B82Y10/00 , G11B7/0901 , G11B7/0909 , G11B7/0938 , G11B7/1387 , G11B7/24 , G11B2007/13727
摘要： There is provided an optical reproduction apparatus and an optical recording and reproduction apparatus which can improve a CNR and can read at high speed. The center portion of a laser light emitted from a semiconductor laser is shaded by a light shading portion of a first light shade, and its peripheral portion is condensed and irradiates a super-resolution film of an optical disk. The center portion of a reflected light from the optical disk is mainly made of a signal component, and a noise component almost disappears. Thus, the reflected light from the optical disk is separated into the center portion and its peripheral portion, and the reflected light made of the signal component of the center portion is used for signal reproduction, so that the CNR can be increased.
摘要翻译：提供了一种可以改善CNR并且可以高速读取的光学再现装置和光学记录和再现装置。从半导体激光器发射的激光的中心部分被第一光阴的遮光部分遮蔽，其周边部分被冷凝并照射光盘的超分辨率膜。来自光盘的反射光的中心部分主要由信号分量构成，并且噪声分量几乎消失。因此，来自光盘的反射光被分离成中心部分及其周边部分，并且由中心部分的信号分量构成的反射光用于信号再现，从而可以增加CNR。

10. 发明授权

US09373361B2 Asperity and head-media contact detection using multi-stage temperature coefficient of resistance sensor 有权
公开(公告)号：US09373361B2
公开(公告)日：2016-06-21
申请号：US14827584
申请日：2015-08-17
申请人： Seagate Technology LLC
发明人： Gary Joseph Kunkel , John L. Brand
IPC分类号： G11B27/36 , G11B5/31 , G11B5/60 , G11B7/09 , G11B7/121
CPC分类号： G11B5/607 , G01K13/00 , G11B5/024 , G11B5/3133 , G11B5/6011 , G11B5/6076 , G11B7/0948 , G11B7/121 , G11B20/10 , G11B27/36
摘要： A multi-stage sensor is situated on the head transducer and configured to interact with a magnetic recording medium. A first sensor stage of the multi-stage sensor has a temperature coefficient of resistance. A second sensor stage of the multi-stage sensor is coupled to the first sensor and has a temperature coefficient of resistance. The first sensor stage is configured to preferentially sense asperities of the media relative to the second sensor stage, and the second sensor stage configured to preferentially sense proximity to, and contact with, a surface of the media relative to the first sensor stage. The first and second sensor stages may be connected in series or in parallel.

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