公开(公告)号：US07577072B2

公开(公告)日：2009-08-18

申请号：US11227482

申请日：2005-09-16

申请人： Cheol Jin

发明人： Cheol Jin

IPC分类号： G11B7/00

CPC分类号： G11B19/12 ,  G11B19/125 ,  G11B2007/0006

摘要： Embodiments of a method and apparatus of identifying optical disk types according to the present invention can identify the type of an optical disk (e.g., DVD-RAM, DVD-RAM, or DVD+/−RW) based on comparisons between a plurality of signals. For example, comparisons between the magnitudes of DPD and DPP tracking error signals and their respective reference values can be used. If an optical disk is identified as DVD+RW or DVD−RW, embodiments according to the present invention can further determine whether the optical disk is DVD+RW or DVD−RW. For example, the frequency of a wobble signal resulting from the shape of tracks formed on the optical disk and variables that affect the wobble frequency (e.g., the rotational speed of the optical disk and the current track position) can be used.

摘要翻译： 根据本发明的识别光盘类型的方法和装置的实施例可以基于多个信号之间的比较来识别光盘（例如，DVD-RAM，DVD-RAM或DVD +/- RW）的类型。 例如，可以使用DPD和DPP跟踪误差信号的幅度与它们各自的参考值之间的比较。 如果将光盘识别为DVD + RW或DVD-RW，则根据本发明的实施例可以进一步确定光盘是DVD + RW还是DVD-RW。 例如，可以使用由形成在光盘上的轨道的形状产生的摆动信号的频率和影响摆动频率的变量（例如，光盘的旋转速度和当前轨迹位置）。

公开(公告)号：US07554890B2

公开(公告)日：2009-06-30

申请号：US10790728

申请日：2004-03-03

申请人： Cheul Kyung Han

发明人： Cheul Kyung Han

IPC分类号： G11B7/00

CPC分类号： G11B7/1267

摘要： A method for recording data on an optical disc, includes detecting optimum writing power from a test area on the optical disc; determining whether or not a current writing power is within a predetermined allowable range set with reference to the detected optimum writing power; and performing a writing operation with the writing power controlled to maintain a reflection signal level corresponding to the detected optimum writing power when the current writing power is within the predetermined allowable range, and performing the writing operation with the writing power controlled based on power update information when the current writing power is not within the predetermined allowable range.

摘要翻译： 一种用于在光盘上记录数据的方法，包括从光盘上的测试区域检测最佳写入功率; 确定当前写入功率是否在参考检测到的最佳写入功率设置的预定允许范围内; 以及当所述当前写入功率在所述预定允许范围内时，以所述写入功率进行写入操作，以保持与所述检测到的最佳写入功率相对应的反射信号电平;以及基于功率更新信息控制的写入功率来执行所述写入操作 当当前写入功率不在预定的允许范围内时。

公开(公告)号：US07301867B2

公开(公告)日：2007-11-27

申请号：US10348908

申请日：2003-01-23

申请人： Keuk Young Bahng

发明人： Keuk Young Bahng

IPC分类号： G11B7/00

CPC分类号： G11B19/28 ,  G11B19/12

摘要： The present invention relates to a recording speed determining method of a disk device. The present method, when data record is requested from a host through an interface, a disk device can receive size information about data to be recorded and/or the present time from the host, and determine a recording speed of a disk to be suitable for the received size information and/or for a time zone where the device is located. The disk device can determine such data size and time zone information internally. Thus, it is possible to reduce a noise that is caused from disk rotation if the size of data to be recorded is small or when a noise is felt relatively big. Further, it is possible to determine a data recording speed in accordance with a data size.

摘要翻译： 盘装置的记录速度确定方法技术领域本发明涉及盘装置的记录速度确定方法。 本方法当通过接口从主机请求数据记录时，磁盘装置可以从主机接收关于要记录的数据和/或当前时间的大小信息，并且确定适于 接收的大小信息和/或设备所在的时区。 磁盘设备可以在内部确定这样的数据大小和时区信息。 因此，如果要记录的数据的大小较小或噪声感觉较大，则可以减少由盘旋转引起的噪声。 此外，可以根据数据大小来确定数据记录速度。

公开(公告)号：US07203145B2

公开(公告)日：2007-04-10

申请号：US10802818

申请日：2004-03-18

申请人： Young Do Choi

发明人： Young Do Choi

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/00458

摘要： The present invention relates to a method for controlling recording optical power. When a recording operation is paused, a playback signal characteristic for recorded data is detected. The recording optical power is controlled based upon the detected playback signal characteristic and hence the recording operation is resumed at the controlled recording optical power. Therefore, even though a characteristic of an optical pickup or disc varies when the recording operation is paused and resumed, an optimum recording operation can be performed and a playback characteristic for recorded data can be improved.

摘要翻译： 本发明涉及一种用于控制记录光功率的方法。 当记录操作暂停时，检测记录数据的重放信号特性。 基于检测到的重放信号特性来控制记录光功率，因此以受控记录光功率恢复记录操作。 因此，即使当记录操作暂停和恢复时光学拾取器或光盘的特性变化，也可以执行最佳的记录操作，并且可以提高记录数据的重放特性。

公开(公告)号：US06912184B2

公开(公告)日：2005-06-28

申请号：US10216226

申请日：2002-08-12

申请人： Jae Cheol Lim ,  Hong Jo Jeong

发明人： Jae Cheol Lim ,  Hong Jo Jeong

IPC分类号： G11B7/09 ,  G11B7/095 ,  G11B19/26 ,  G11B7/00

CPC分类号： G11B7/0941 ,  G11B7/0908 ,  G11B7/0956 ,  G11B19/26

摘要： The present invention relates to method and apparatus of measuring axial vibration of a rotating disk. The present axial vibration measuring method selects a plurality of equally-spaced (45°˜120°-spaced) angular positions of a disk recording medium to conduct focusing operation at, conducts focusing operation at each selected position, measures focusing time from each start of the focusing operation to exactness in focus, and calculates axial vibration of the disk recording medium based on a deviation of the measured focusing times. The present method can measure exactly how much a rotating disk vibrates axially.

摘要翻译： 本发明涉及测量旋转盘的轴向振动的方法和装置。 本轴向振动测量方法选择盘记录介质的多个等间隔（45°〜120°间隔）的角度位置进行聚焦操作，在每个选定位置进行聚焦操作，测量从每个开始的聚焦时间 聚焦操作到精确的对焦，并且基于测量的聚焦时间的偏差来计算盘记录介质的轴向振动。 本方法可以精确地测量旋转盘轴向振动的程度。

公开(公告)号：US20240039342A1

公开(公告)日：2024-02-01

申请号：US18227674

申请日：2023-07-28

申请人： Hitachi-LG Data Storage Korea, Inc.

发明人： Sucheol KIM ,  Cheol JIN ,  Chaemin JU ,  Yurak SON ,  Hyeongyeon CHO ,  Suyoung LEE ,  Hyunuk HA ,  Hogil LEE

IPC分类号： H02J50/70 ,  H02J50/10 ,  H02J50/00 ,  H05K1/18 ,  H05K1/11

CPC分类号： H02J50/70 ,  H02J50/10 ,  H02J50/005 ,  H05K1/181 ,  H05K1/111 ,  H05K2201/1003

摘要： The wireless charging device according to an embodiment may comprise a shielding assembly where a shield, a first coil for power transfer by magnetic inductive coupling, and a bracket are formed, an NFC coil fixed to the bracket, and a main PCB including an inverter that converts DC power into AC power and supplies it to the first coil. The bracket may be formed outside the first coil. The shielding assembly may further include a coil connector for connecting the first coil and the NFC coil to the main PCB. The coil connector may consist of a plurality of protruding pins, and the plurality of protruding pins may be inserted into holes formed at corresponding positions on the main PCB so that the first coil and the NFC coil are electrically connected to the main PCB.

公开(公告)号：US20230118923A1

公开(公告)日：2023-04-20

申请号：US17968466

申请日：2022-10-18

申请人： HITACHI-LG DATA STORAGE KOREA, INC.

发明人： Cheol JIN

IPC分类号： H02J50/90 ,  H02J50/10 ,  H02J7/00

摘要： The method for transmitting power wirelessly according to an embodiment may comprise checking a position of a receiving device while wirelessly transmitting power to the receiving device, and changing a charging stop level which is compared with power loss which corresponds to a difference between transmitted power transmitted to the receiving device and received power received by the receiving device when the receiving device is outside a charging area. The receiving device is outside the charging area may be determined based on that the received power is equal to or greater than reference power and a power control level when transmitting the power to the receiving device is equal to or greater than a reference value. The charging stop level may be returned to an original value when the power loss is lower than the changed charging stop level until a predetermined time elapses after changing the charging stop level.

公开(公告)号：US10895530B2

公开(公告)日：2021-01-19

申请号：US16197056

申请日：2018-11-20

申请人： HITACHI-LG DATA STORAGE KOREA, INC.

发明人： Jaeyong Ryu

IPC分类号： G01N21/53 ,  G01N21/94 ,  G01N33/00 ,  G01N21/3504 ,  G01N21/3518

摘要： The present invention provides a sensor combining a dust sensor and a gas sensor, comprising a light emitting unit for emitting light, a first light receiving unit for receiving scattered light which is emitted by the light emitting unit and scattered by dust to detect dust concentration, a mirror for changing a path of the emitted light which the light emitting unit emits, and a second light receiving unit for receiving the emitted light the path of which is changed by the mirror to detect gas concentration. An inflow section for introducing air into a detection space inside the sensor is formed in a Y-shaped tube in which a first inlet and a second inlet meet. The inflow section comprises a switch which selects a path through which air flows into the detection space out of the first inlet and the second inlet.

公开(公告)号：US10859703B2

公开(公告)日：2020-12-08

申请号：US15921130

申请日：2018-03-14

申请人： HITACHI-LG DATA STORAGE KOREA, INC.

发明人： Taesung Kim

IPC分类号： G01S17/00 ,  G01S17/87 ,  H02K11/22 ,  G01S7/481 ,  G01C3/08 ,  G01S17/10 ,  H02K11/042 ,  H02K7/14 ,  G01S7/4863 ,  H02K21/22

摘要： The distance measuring apparatus according to the present invention may comprise: a distance measuring unit; a motor; and a rotary wireless transceiver, comprising a rotor core rotated by the motor, a stator core, and power coils and signal coils respectively wound around the rotor core and the stator core, configured to wirelessly supply power to the power coil wound around the rotor core via the power coil wound around the stator core and wirelessly transmit the signal output from the distance measuring unit to the signal coil wound around the stator core via the signal coil wound around the rotor coil. The rotor core and the stator core may be in a shape of a circular plain such that the rotor core and the stator core face each other with a plane, perpendicular to a rotation axis of the motor, interposed between them.

公开(公告)号：US20190195766A1

公开(公告)日：2019-06-27

申请号：US16196565

申请日：2018-11-20

申请人： HITACHI-LG DATA STORAGE KOREA, INC.

发明人： Jaeyong RYU

IPC分类号： G01N15/06

CPC分类号： G01N15/06 ,  G01N2015/0046 ,  G01N2015/0693

摘要： The present invention provides a dust sensor comprising: a sensor module for receiving light scattered by dust particles and outputting an electric signal; a communication module for communicating with an external device; a memory for storing region information in association with particle density data; and a control unit for calculating a volume of the dust particles based on the signal output from the sensor module, obtaining the region information for a location where the dust sensor is installed via the communication module, retrieving the particle density data corresponding the obtained region information from the memory, calculating dust concentration using the retrieved particle density data and the calculated volume, and outputting the calculated dust concentration. The memory may store the region information in association with air quality reference data.