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1. 发明授权

US08743495B1 Disk drive detecting track squeeze when circular tracks are defined from non-circular servo tracks 有权
标题翻译：当圆形轨道由非圆形伺服轨道定义时，磁盘驱动器检测轨道挤压
公开(公告)号：US08743495B1
公开(公告)日：2014-06-03
申请号：US13153357
申请日：2011-06-03
申请人： Min Chen , Duc T. Phan
发明人： Min Chen , Duc T. Phan
IPC分类号： G11B5/596
CPC分类号： G11B5/59627 , G11B20/10305
摘要： A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of non-circular servo tracks for defining a plurality of substantially circular tracks. Each non-circular servo track comprises a plurality of servo sectors defining a plurality of servo wedges. The head is positioned at a first offset relative to a first circular track and a relationship of servo bursts for each servo wedge is first generated. The head is positioned at a second offset relative to the first circular track and the relationship of the servo bursts for each servo wedge is second generated. For each servo wedge, a selection is made between the first generated relationship at the first offset and the second generated relationship at the second offset, and the servo bursts at the selected offset are evaluated to generate a track squeeze indicator.
摘要翻译：公开了一种磁盘驱动器，其包括在盘上致动的磁头，该磁头包括多个用于限定多个基本上圆形轨道的非圆形伺服磁道。每个非圆形伺服轨道包括限定多个伺服楔形的多个伺服扇区。头部相对于第一圆形轨道定位在第一偏移处，并且首先产生针对每个伺服楔的伺服脉冲串的关系。头部相对于第一圆形轨道定位在第二偏移处，并且第二次产生用于每个伺服楔块的伺服脉冲串的关系。对于每个伺服楔，在第一偏移处的第一生成关系和第二偏移处的第二生成关系之间进行选择，并且评估所选偏移处的伺服脉冲串以产生轨道挤压指示器。

2. 发明授权

US08896955B1 Adaptive track follow control 有权
标题翻译：自适应跟踪控制
公开(公告)号：US08896955B1
公开(公告)日：2014-11-25
申请号：US13162095
申请日：2011-06-16
申请人： Min Chen , Alain Chahwan , Shang-Chen Wu , Qixing Zheng , Alexander Babinski , Duc T. Phan
发明人： Min Chen , Alain Chahwan , Shang-Chen Wu , Qixing Zheng , Alexander Babinski , Duc T. Phan
IPC分类号： G11B5/596
CPC分类号： G11B5/59622 , G11B5/59694
摘要： A disk drive comprises a track follow control system having a plurality of selectable frequency modes, the track follow control system configured to receive a position error signal and to output a control signal based on the position error signal, wherein the control signal is used by a head assembly to position a head over a disk. The disk drive also comprises a state estimator configured to receive the control signal and a position signal indicating a position of the head, to estimate a disturbance based on the control signal and the position signal, and to output an estimated disturbance signal based on the estimated disturbance. The disk drive further comprises a disturbance evaluator configured to receive the estimated disturbance signal, and to select one of the frequency modes of the track follow control system based on the estimated disturbance signal.
摘要翻译：磁盘驱动器包括具有多个可选频率模式的轨道跟随控制系统，轨道跟随控制系统被配置为接收位置误差信号并基于位置误差信号输出控制信号，其中控制信号由头部组件以将磁头定位在磁盘上。磁盘驱动器还包括状态估计器，其被配置为接收控制信号和指示头部的位置的位置信号，以基于控制信号和位置信号来估计干扰，并且基于所估计的干扰信号来输出估计的干扰信号骚乱。磁盘驱动器还包括被配置为接收所估计的干扰信号的干扰评估器，并且基于估计的干扰信号选择轨道跟随控制系统的频率模式之一。

3. 发明授权

US07688538B1 Disk drive comprising a disk surface having track addresses of varying width 失效
标题翻译：磁盘驱动器包括具有不同宽度的轨道地址的盘表面
公开(公告)号：US07688538B1
公开(公告)日：2010-03-30
申请号：US11941467
申请日：2007-11-16
申请人： Min Chen , Duc T. Phan
发明人： Min Chen , Duc T. Phan
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/59638 , G11B5/59666
摘要： A disk drive is disclosed comprising a disk surface having a plurality of servo sectors for defining a plurality of servo tracks, and a head actuated radially over the disk surface. A first servo sector defines a first servo track comprising a first track address having a first width, and a second servo sector defines a second servo track comprising a second track address having a second width substantially less than the first width. In one embodiment the servo sectors are written using an external servo writer or media writer, and in another embodiment the servo sectors are self-servo written by the disk drive.
摘要翻译：公开了一种磁盘驱动器，其包括具有用于限定多个伺服磁道的多个伺服扇区的磁盘表面，以及沿盘表面径向地致动的磁头。第一伺服扇区定义包括具有第一宽度的第一轨道地址的第一伺服轨迹，而第二伺服扇区限定包括具有基本上小于第一宽度的第二宽度的第二轨道地址的第二伺服轨迹。在一个实施例中，使用外部伺服写入器或介质写入器写入伺服扇区，在另一个实施例中，伺服扇区由磁盘驱动器自写入。

4. 发明授权

US07616399B1 Disk drive servo control techniques to preserve PES continuity 有权
标题翻译：磁盘驱动伺服控制技术，保持PES连续性
公开(公告)号：US07616399B1
公开(公告)日：2009-11-10
申请号：US11635904
申请日：2006-12-07
申请人： Min Chen , Zhi Wang , Duc T. Phan
发明人： Min Chen , Zhi Wang , Duc T. Phan
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A disk drive comprising a moveable head, a disk, and a servo controller that implements servo control techniques to preserve PES continuity during track following operations is disclosed. The disk includes a plurality of tracks in which a substantial majority of the tracks include a plurality of servo sectors having a plurality of servo bursts that are utilized in track following operations. The servo controller controls track following operations with the moveable head and implements operations to preserve PES continuity during track following. These operations include: dividing tracks of the disk into a plurality of zones wherein each zone includes zone boundaries; and utilizing a PES equation for each zone to generate a PES value based upon read servo bursts wherein each zone PES equation includes a normalizing factor to account for boundary conditions associated with zone boundaries to preserve PES value continuity between zones.
摘要翻译：公开了一种磁盘驱动器，其包括可移动磁头，磁盘和伺服控制器，其实现伺服控制技术以在跟踪操作期间保持PES连续性。磁盘包括多个磁道，其中绝大多数磁道包括具有多个伺服脉冲串的多个伺服扇区，这些伺服扇区在跟踪操作中被使用。伺服控制器通过可移动头控制跟踪跟踪操作，并实现跟踪跟踪期间保持PES连续性的操作。这些操作包括：将盘的轨迹分成多个区，其中每个区包括区域边界; 并且利用每个区域的PES等式基于读取的伺服脉冲串生成PES值，其中每个区域PES方程式包括归一化因子以考虑与区域边界相关联的边界条件以保持区域之间的PES值连续性。

5. 发明授权

US08553351B1 Disk drive correcting track ID in response to an estimated radial location and a burst PES 失效
标题翻译：响应于估计的径向位置和突发PES，盘驱动器校正轨迹ID
公开(公告)号：US08553351B1
公开(公告)日：2013-10-08
申请号：US13267196
申请日：2011-10-06
申请人： Aswartha Narayana , Chuanwen Ji , Duc T. Phan , Min Chen , Hengchang Guo
发明人： Aswartha Narayana , Chuanwen Ji , Duc T. Phan , Min Chen , Hengchang Guo
IPC分类号： G11B21/02
CPC分类号： G11B5/596 , G11B5/59644
摘要： A disk drive is disclosed comprising a head actuated over a disk, the disk comprising a plurality of servo tracks defined by a plurality of servo sectors. An estimated radial location of the head is generated in response to an actuator control signal. A Gray coded track ID is detected from reading a servo sector, and decoded into a detected track ID. A burst position error signal (PES) is generated from reading servo bursts in the servo sector, wherein the burst PES represents a detected fractional servo track offset of the head. When the detected track ID is corrupt, a corrected track ID is generated using the estimated radial location and the burst PES, and the actuator control signal is adjusted in response to the corrected track ID and the burst PES.
摘要翻译：公开了一种磁盘驱动器，其包括在盘上致动的磁头，磁盘包括由多个伺服扇区限定的多个伺服磁道。响应于致动器控制信号产生头部的估计的径向位置。通过读取伺服扇区来检测灰色编码轨道ID，并将其解码为检测到的轨迹ID。脉冲串位置误差信号（PES）是从伺服扇区的伺服脉冲串中产生的，其中脉冲串PES表示检测到的磁头的分数伺服磁道偏移。当检测到的磁道ID被破坏时，使用估计的径向位置和突发PES产生校正的磁道ID，并且响应于校正的磁道ID和突发PES调整致动器控制信号。

6. 发明授权

US07961422B1 Disk drive computing data center off-track from repeatable runout of write servo track and read servo track 有权
标题翻译：磁盘驱动器计算数据中心从写入伺服轨迹和读取伺服轨迹的可重复跳动偏离轨迹
公开(公告)号：US07961422B1
公开(公告)日：2011-06-14
申请号：US12388644
申请日：2009-02-19
申请人： Min Chen , Li Yi , Duc T. Phan
发明人： Min Chen , Li Yi , Duc T. Phan
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A disk drive is disclosed comprising a disk having a plurality of servo tracks that define a plurality of data tracks, and a head actuated over the disk by a voice coil motor (VCM), wherein the head comprises a read element offset radially from a write element. The read element is positioned over a first servo track and the write element is positioned over a second servo track, and a first repeatable runout (RRO) of the first servo track is measured. The read element is positioned over the second servo track, and a second RRO of the second servo track is measured. A data center off-track is computed in response to the first RRO and the second RRO.
摘要翻译：公开了一种磁盘驱动器，其包括具有限定多个数据磁道的多个伺服磁道的盘，以及由音圈电机（VCM）在盘上驱动的磁头，其中磁头包括从写入放射偏离的读取元件元件。读取元件位于第一伺服轨道之上，并且写入元件位于第二伺服轨道上，并且测量第一伺服轨道的第一可重复跳动（RRO）。读取元件位于第二伺服轨道上，并且测量第二伺服轨道的第二RRO。响应于第一RRO和第二RRO计算数据中心离轨。

7. 发明申请

US20170240294A1 Three-dimensional infrared laser aircraft landing-guiding system with high directivity 审中-公开
公开(公告)号：US20170240294A1
公开(公告)日：2017-08-24
申请号：US15504598
申请日：2015-04-13
申请人： Min Chen , ZHEJIANG UNIVERSITY , UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA , TUNGHAI UNIVERSITY
发明人： Hongsheng Chen , Zhaoyun Duan , Min Chen , Tsong-Shin Lim
IPC分类号： B64D45/08 , G01S17/89 , G01S7/499 , B64F1/18
CPC分类号： B64D45/08 , B64F1/18 , G01S1/70 , G01S5/16 , G01S7/499 , G01S17/89
摘要： A three-dimensional infrared laser aircraft landing-guiding system with high directivity is described. The system utilizes a highly penetrable and highly directional infrared laser source to generate an optical image via an optical image generating apparatus. The generated optical image involves the information for aircraft landing, and the information covers a large range of flying areas to make the optical image detectable for an aircraft. With the information provided by the optical image, the aircraft can be guided to the best landing path. The infrared laser source is highly directional and can emit a laser light to specific directions, reducing waste of energy, increasing navigation distances, and improving anti-jamming capability.

8. 外观设计

USD771964S1 Chair 有权
公开(公告)号：USD771964S1
公开(公告)日：2016-11-22
申请号：US29533160
申请日：2015-07-15
申请人： Min Chen
设计人： Min Chen

9. 发明授权

US09019727B2 Temperature compensation of output diode in an isolated flyback converter 有权
标题翻译：隔离反激式转换器中输出二极管的温度补偿
公开(公告)号：US09019727B2
公开(公告)日：2015-04-28
申请号：US13552360
申请日：2012-07-18
申请人： Min Chen , John David Morris , Michael George Negrete
发明人： Min Chen , John David Morris , Michael George Negrete
IPC分类号： H02M3/335 , H02M3/156
CPC分类号： H02M3/156 , H02M3/335
摘要： An isolated flyback converter having temperature compensation (TC) uses primary side sensing and an output diode, the output diode having a variable voltage drop related to its temperature. A feedback voltage VFB, proportional to the output voltage VOUT, in a feedback loop is compared to a fixed reference voltage VREF for setting a duty cycle of a power switch, wherein VFB is caused to approximately equal VREF. A TC circuit has a voltage source configured to generate a proportional-to-absolute-temperature voltage VPTAT, wherein VPTAT is at approximately VREF at a calibration temperature T0 and rises as a temperature exceeds T0. The voltage source is connected to the VFB node via a TC resistor RTC, so that at T0 no current flows through RTC. Therefore, the selection of the optimal RTC does not affect the selection of a scaling resistance for generating VFB. The current through RTC at elevated temperatures compensates VOUT.
摘要翻译：具有温度补偿（TC）的隔离反激式转换器使用初级侧感测和输出二极管，输出二极管具有与其温度相关的可变电压降。将与反馈回路中的输出电压VOUT成比例的反馈电压VFB与用于设定电源开关的占空比的固定参考电压VREF进行比较，其中使VFB大致相等于VREF。 TC电路具有被配置为产生比例绝对温度电压VPTAT的电压源，其中VPTAT在校准温度T0处大约为VREF，并且随着温度超过T0而升高。电压源通过TC电阻RTC连接到VFB节点，使得在T0，没有电流流经RTC。因此，最优RTC的选择不会影响生成VFB的缩放电阻的选择。在高温下通过RTC的电流补偿了VOUT。

10. 发明申请

US20130329418A1 LED lighting device with high color rendering index 审中-公开
标题翻译： LED照明装置具有高显色指数
公开(公告)号：US20130329418A1
公开(公告)日：2013-12-12
申请号：US13492866
申请日：2012-06-10
申请人： Bishou Chen , Chungen Chen , Na Feng , Min Chen
发明人： Bishou Chen , Chungen Chen , Na Feng , Min Chen
IPC分类号： F21V9/10
CPC分类号： H05B33/0857 , F21K9/00 , F21Y2113/10 , F21Y2113/13 , F21Y2113/17 , F21Y2115/10
摘要： An LED (light emitting diode) lighting device with high color rendering index includes a plurality of LED luminous units, wherein one of the LED luminous units has (u′, v′) chromaticity coordinates defined on a 1976CIE chromaticity diagram, a distance between every two coordinate points is not less than 0.01, a distance between at least one of the coordinate points and any other coordinate point is not less than 0.1, and coordinates of at least one of the coordinate points meet a condition that 0.10≦u′≦0.45 and 0.30≦v′≦0.50. By selecting a variety of LEDs within a certain spectral range to mix light, the color rendering index of the LED lighting device with high color rendering index of the present invention can be improved, and simultaneously the cost of the light source can be controlled.
摘要翻译：具有高显色指数的LED（发光二极管）照明装置包括多个LED发光单元，其中一个LED发光单元具有在1976CIE色度图上定义的（u'，v'）色度坐标，每个两个坐标点不小于0.01，坐标点和任何其他坐标点中的至少一个之间的距离不小于0.1，并且至少一个坐标点的坐标满足0.10≤u≤0.45 和0.30 @ v'@ 0.50。通过选择特定光谱范围内的各种LED来混合光，可以提高本发明的高显色指数的LED照明装置的显色指数，同时可以控制光源的成本。

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