HITACHI-LG DATA STORAGE KOREA, INC. Patent applications |
Patent application number | Title | Published |
20160123764 | DISTANCE MEASURING APPARATUS - Disclosed herein is a distance measuring apparatus. The distance measuring apparatus includes a light-emitting unit configured to radiate light in a pulse form of a specific width, a light-receiving unit configured to include a plurality of cells for receiving reflected light radiated by the light-emitting unit and reflected by an object, and a processor configured to perform one or more of an operation for calculating a first distance of the object using a first method based on the locations of one or more cells which belong to the plurality of cells and on which the reflected light is focused and an operation for calculating a second distance of the object using a second method based on the time when the reflected light is reached and to correct the first distance calculated using the first method based on the second distance calculated using the second method. | 05-05-2016 |
20160099578 | APPARATUS AND METHOD FOR TRANSMITTING POWER WIRELESSLY - The present invention relates to a method and an apparatus for wirelessly transmitting power. A method for wirelessly transmitting power according to an embodiment can measure and store signal strength values corresponding to inductive coupling degrees with a secondary coil of a receiving apparatus sequentially with respect to two or more primary coils included in two or more resonance circuits, select a primary coil related to a largest signal strength value among the signal strength values as an operating coil, adjust a reference value of a power loss value which becomes a basis for entering a mode for detecting power loss based on a difference between a signal strength for a primary coil adjacent to the operating coil and a signal strength value for the operating coil, and transmit power to a wireless power receiving apparatus through the operating coil. | 04-07-2016 |
20160056637 | METHOD AND APPARATUS FOR TRANSMITTING POWER WIRELESSLY - Disclosed are a method and an apparatus for transmitting power wirelessly. The apparatus for wirelessly transmitting power includes: a power converter including an inverter for converting DC power into AC power, a resonance circuit, and two sensors for extracting a message transmitted from a receiving apparatus receiving power through magnetic induction of the resonance circuit; and a controller for controlling an operation of the inverter by selectively using messages extracted by the two sensors. When the controller fails in decoding the message extracted by one of the two sensors, the controller decodes the message extracted by the other of the two sensors and controls the operation of the inverter based on the decoded message. One of the two sensors is connected to a front stage of the inverter and the other of the two sensors is connected to a rear stage of the inverter. | 02-25-2016 |
20160019928 | OPTICAL DISC DEVICE - An optical disc device is provided. The optical disc device comprises: a comprising an optical pickup and a transfer unit for linearly moving the optical pickup in a radial direction; and a locking module that is mounted on a rear side of the tray for unlocking the tray from the body, the locking module comprising: a locking part comprising a hook for engaging a locking projection formed on the body and being mounted to be rotatable; a circular gear being mounted to be rotatable in connection with the transfer unit; a first connecting for rotating by a linear force transmitted through the transfer unit moving outward; and a second connecting part for rotating by a force transmitted sequentially from the first connecting part and the circular gear and to transmit torque to the locking part to cause the hook to be unlocked from the locking projection. | 01-21-2016 |
20150349545 | APPARATUS FOR WIRELESSLY TRANSMITTING POWER - Disclosed herein is an apparatus for wirelessly transmitting power. The apparatus for wirelessly transmitting power includes a transmission coil configured to change a magnetic field in response to an AC current, a shielding unit configured to restrict the propagation of the magnetic field generated from the transmission coil, and a casing configured to surround the transmission coil and the shielding unit. The transmission coil is formed in a single layer form by winding a wire along the sides of an isosceles triangle having a height greater than a base in the same plane, and the transmission coil may have a perimeter height of 52±0.5 mm, an inside height of 34±0.5 mm, a perimeter width of 46±0.5 mm, an inside width of 28±0.5 mm, and a thickness of 1.1±0.3 mm. The transmission coil may be formed by winding the wire on the sides of the isosceles triangle eight times. | 12-03-2015 |
20150347469 | METHOD OF MANAGING DATA IN ARCHIVE SYSTEM BASED ON OPTICAL DISK - Disclosed herein is a method of managing data in an optical disk-based archive system. In an embodiment, when data is written in an optical disk, the metadata of the optical disk may be generated and stored. When a cartridge unit is drawn from an archive system and moved to a second archive system, the metadata of all the optical disks kept in the cartridge unit may be sent to another archive system through a medium. The metadata may be sent to another archive system over, a network, or the metadata may be copied to external memory and sent to another archive system. Furthermore, when a new cartridge unit is mounted on an archive system, a compression file may be received over a network or through external memory, and the metadata of all the optical disks kept in the new cartridge unit may be restored by decompressing the compression file. | 12-03-2015 |
20150323669 | APPARATUS FOR DETECTING DISTANCES IN TWO DIRECTIONS - Provided is an apparatus for measuring distances in two directions. The apparatus in accordance with an embodiment of the present invention may include a sensor module configured to include a light emission unit configured to emit a first wavelength beam and a second wavelength beam, a light reception unit configured to receive reflected light emitted by the light emission unit and reflected from an object and first and second beam splitters respectively disposed ahead of the light emission unit and the light reception unit and configured to transmit the first wavelength beam and reflect the second wavelength beam; and a motor configured to rotate the sensor module. Accordingly, there is an advantage in that a production cost can be reduced because distance measurement and height measurement are performed using a single module. | 11-12-2015 |
20150270718 | METHOD AND APPARATUS FOR TRANSMITTING POWER WIRELESSLY - Disclosed are an apparatus and a method for transmitting power wirelessly. The method for transmitting power wirelessly includes: detecting whether a receiving apparatus moves while wirelessly transmitting the power to the receiving apparatus through magnetic inductive coupling; performing the magnetic inductive coupling with the receiving apparatus for each of two or more primary coils when it is detected that the receiving apparatus moves; and determining whether to change the primary coil connected with the receiving apparatus based on a result of the magnetic inductive coupling. A signal strength message received from the receiving apparatus is received and stored every primary coil magnetically inductively coupled with the receiving apparatus, and it is determined that the received apparatus is connected through a primary coil corresponding to a largest value among signal strength values included in the signal strength message. | 09-24-2015 |
20150194840 | RECEPTION DEVICE FOR WIRELESS CHARGING - Disclosed herein is a reception device for wireless charging. The reception device for wireless charging may include a reception antenna configured to generate an electric current based on a change of magnetism and a charging circuit unit configured to convert the electric current generated by the reception antenna into direct current. The reception antenna and the charging circuit unit may be connected to a flexible board. Accordingly, the reception device can be attached to the casing of a smart terminal while minimizing a change in the thickness of the smart terminal. A task for connecting the antenna and charging circuit unit of the reception device can be eliminated. A wireless charging function can be assigned to a smart terminal by simply replacing the casing of the smart terminal not having the wireless charging function. | 07-09-2015 |
20150194178 | METHOD OF CONTROLLING POWER IN OPTICAL DISC APPARATUS - A method of controlling power in an optical disc apparatus is provided. A method of controlling power in an optical disc apparatus includes: measuring a temperature of an inside of the optical disc apparatus; calculating, based on the measured temperature, a driving value with which a laser diode (LD) outputs target power; and driving the LD with the calculated driving value. The driving value uses a function in which a temperature acts as a variable and may be calculated for a read channel and a write channel in a divided manner. In the read channel, a driving value of read power in a read mode and a driving value of read power in a record mode may be calculated using different functions, and in the write channel, a driving value of at least one segment of record power divided into two or more segments may be calculated using different functions. | 07-09-2015 |
20140130066 | METHOD FOR CONTROLLING MOVEMENT OPERATION OF TRAY IN OPTICAL DISC DRIVE WITHOUT PHYSICAL SWITCH - A method for controlling a tray in an optical disc drive comprises: setting first and second flags for indicating a current state of the tray, the state of the tray including an open state, a closed state and a state in which the tray moves; and controlling a movement operation of the tray, base on values of the two flags and a time when a counter electromotive force is generated in a motor for moving the tray. If a request of performing a tray closing operation in the state in which the tray is opened is received, the tray closing operation is performed, and the value of the second flag is changed. If the counter e.m.f is detected after a first time from the time when the tray closing operation is started, the driving of the motor is stopped, and the value of the first flag is changed. | 05-08-2014 |
20140126340 | ARCHIVE SYSTEM FOR DOUBLE SIDED OPTICAL DISC - Disclosed is an archive system for a double sided optical disc, in which optical disc drives for recording or reading data on second surfaces of double sided optical discs are mounted in at least one of first and second drive bays respectively mounted at left and right sides of a disc picker robot, so that data recording or reading operations on first and second surfaces of double sided optical discs can be automatically performed. | 05-08-2014 |
20140047462 | SLIM TYPE OPTICAL DISC DRIVE - There is provided a slim type optical disc drive. The slim type optical disc drive includes a cabinet including an upper chasse and a lower chasse, a tray to be introduced to an inside of the cabinet or withdrawn to an outside of the cabinet, a sub-printed circuit board (PCB) provided in the tray, a main PCB provided on one side of an internal rear surface of the lower chasse, and a cable divided into a first part and a second part based on a line folded in a direction that does not run parallel with the wiring lines to electrically connect the main PCB and the sub-PCB. The second part connected to the sub-PCB does not run parallel with the first part connected to the main PCB in a state where the cable is folded but floats in accordance with a movement of the tray. | 02-13-2014 |
20130117502 | METHOD FOR MANAGING SYSTEM FIRMWARE IN NAS SERVER - A method for managing system firmware in a network attached storage (NAS) server comprises: synchronizing system firmware stored one or more of two or more hard disks (HDDs) and system firmware stored in a nonvolatile memory with each other; and confirming whether or not at least one valid HDD in which the system firmware is stored exists, when an HDD is replaced; and copying the system firmware stored in the nonvolatile memory into the replaced HDD, when it is confirmed that the valid HDD does not exist. In the method, when a watch dog timer is reset, the system firmware stored in the nonvolatile memory is synchronized, based on the system firmware stored in the HDD, by confirming whether or not the system firmware of the HDD and the system firmware of the nonvolatile memory are synchronized with each other. | 05-09-2013 |
20130047171 | SLIM TYPE OPTICAL DISC DRIVE USING A FLEXIBLE FLAT CABLE - An optical disc drive according to one embodiment of the present invention comprises a case; a tray for loading an optical disc; and a flexible flat cable for connecting a first connector installed at the rear of the case and a second connector of a printed circuit board installed at the rear surface of the tray, where insulating tape for impedance matching may be attached to the flexible flat cable. The insulating tape may be attached to a bottom surface of a fixed part of the flexible flat cable. Also, tape with meshed lines of conductive material may be attached to a surface of the moving part of the flexible flat cable come into contact with the printed circuit board while the tray stays in the case. Therefore, the present invention allows low cost flexible flat cables to be used for SATA interface without generating errors due to impedance mismatch. | 02-21-2013 |
20130014134 | APPARATUS FOR CLAMPING OPTICAL DISC - An apparatus for clamping an optical disc according to the present invention, if an optical disc loaded into a turntable of a spindle motor is clamped in an optical disc drive, keeps the clamper and the turntable of the spindle motor close to each other by using an elastic force delivered by an elastic member installed in an upper part of the clamper. Therefore, the present invention enables optical disc clamping operation and rotational operation of a spindle motor in a normal manner without employing an expensive magnet such as a clamper yoke, clamper magnet, and absorption magnet and thus efficiently reduces manufacturing costs of optical disc drives. | 01-10-2013 |
20130007779 | TRAY FOR PREVENTING GREASE SCATTERING - The present invention is related to a tray of an optical disc drive. In a tray according to one embodiment of the present invention, a flutter hole is formed in the middle of the tray providing space through which an optical pick-up moves toward an inner or outer circumferential area of an optical disc and a guide vane is formed to prevent contamination of the optical disc caused as grease spread on a lead screw of a sled motor for moving the optical pick-up moves according to air flow due to rotation of the optical disc. The guide vane can be formed only in a surface in which the lead screw is installed among two vertical side surfaces forming a boundary of a flutter hole of the tray and the guide vane can be formed at a position corresponding to an outer circumferential area of the optical disc. | 01-03-2013 |
20110239237 | OPTICAL DISC DRIVE - An optical disc drive is disclosed. The optical disc drive comprises a housing including an upper housing and a lower housing; and a herringbone pattern that is protruded toward the inner space of the housing on the inner surface of the upper housing and causes an air flow generated by the rotation of an optical disc to be switched to the direction of the optical disc. The herringbone pattern comprises at least one inflection point, and makes an acute angle at the inflection point relative to the direction of the air flow formed along the inner surface of the upper housing. Accordingly, the optical disc can be stably chucked and rotated by switching the air flow generated by the rotation of the optical disc to the direction of the optical disc. | 09-29-2011 |
20110239236 | OPTICAL DISC DRIVE - An optical disc drive is disclosed. The optical disc drive comprises an optical pickup base including an optical pickup movable in the radius direction of an optical disc; and a main base holding the optical pickup base, wherein the main base comprises a guide rib protruding from the main base and guiding the air flow generated by the rotation of the optical disc to the optical pickup. Further, the optical pickup comprises an air spoiler for preventing contamination of an objective lens included in the optical pickup. The optical disc drive is able to control the temperature of an optical pickup unit by guiding the air flow generated by the rotation of an optical disc to the optical pickup. Moreover, the optical disc drive can reduce contamination of the objective lens of the optical pickup due to the air flow generated by the rotation of the optical disc. | 09-29-2011 |
20110238911 | METHOD OF CONTROLLING OPTICAL DISC DRIVE ARCHIVE SYSTEM - A method of controlling an ODD archive system comprising three or more ODDs is provided comprising storing information on a parity drive in a memory, and setting a parity drive in which parity data is to be recorded based on the information when data recording is requested in a RAID 3 or 4 manner. The information on the parity drive may include a cumulative value of number of times by which each ODD has been set as the parity drive up to now. Or the information on the parity drive may be managed for each of one or more magazine having optical discs the number of which is equal to or less than the number of ODDs included in the archive system. | 09-29-2011 |
20110170383 | METHOD FOR MANAGING DEFECT OF OPTICAL DISC - Disclosed is a method for managing a defect of an optical disc. In the method, when a host requests data of an optical disc inserted into an optical disc drive (ODD) included in a device to be integrated with a solid state drive (SSD), an address of the requested data is compared with contents contained in defect management information managed within the SSD, and the requested data is read from the optical disc or from the defect management information according to a result of the comparing. The defect management information may include optical disc identification information, address information, defect type information and data of a corresponding address. When the optical disc is inserted into the ODD, defect management information regarding the optical disc may be generated and stored in the SSD. Accordingly, Read Delay or Read Fail, resulting from a defect of the optical disc, can be obviated. | 07-14-2011 |
20110164481 | RECORDING METHOD FOR OPTICAL DISC AND OPTICAL DISC DEVICE - A recording method for an optical disc and an optical disc device are provided. In one embodiment of the present invention, delay at upward transition of laser diode output driven by a recording pulse can be compared with a predetermined reference value; when the delay is larger than the predetermined reference value, the delay at the upward transition can be compensated by adjusting the recording pulse through a pulse of a reserved output channel; and data can be recorded in an optical disc by driving the laser diode by using the adjusted recording pulse. The amount of delay at the upward transition can be detected through a front photo detector of the laser diode; and the comparison and the compensation can be carried out when fast recording more than specified performance on the optical disc is requested. | 07-07-2011 |
20110019519 | OPTICAL DISC RECORDING METHOD AND OPTICAL DISC APPARATUS - This document relates to a method of compensating for a sensitivity variation of a tracking actuator with focusing offset when recording labels on a disc for label recording. A focusing point suitable for the position of an object lens in the circumference direction and/or the radius direction is detected, a tracking sensitivity corresponding to the detected focusing point is obtained based on information about a tracking sensitivity variation according to a focusing point variation, and labels are recorded on a label plane using the detected focusing point and tracking sensitivity. The information may be measured using at least two different types of discs one of which has a distance, between the surface of the disc and a pattern area required for a feed forward servo operation, different from the distance of the other. | 01-27-2011 |
20110019515 | METHOD OF MANAGING DATA IN OPTICAL DISC APPARATUS - A method of managing data in an optical disc apparatus is provided. The type of a loaded disc is checked, and data corresponding to the checked disc type is read from a compressed file, decompressed and stored in a memory of the optical disc apparatus. Recording-related data respectively corresponding to disc types, manufacturers, and recording speeds are separately compressed in the compressed file. Identification information about the disc types, manufacturers, and recording speeds and information on positions at which the recording-related data about the disc types, manufacturers, and recording speeds are stored may be included in the head of the compressed file. The compressed file may include separately compressed servo data, and information on the position at which the servo data is stored may be included in the head of the compressed file. Accordingly, the optical disc manufacturing cost can be decreased and a data loading time can be reduced. | 01-27-2011 |