Samsung Electronics Co., Ltd.

Seoul National University

Yonsei University

Soundscape Co., Ltd.

Jong-hyun Shin

An-sik Jeong

Kyung-geun Lee

Hyun-Soo Park

Tatsuhiro Otsuka

Young-jin Park

Kyu-suk Lee

Jae-hwi Jang

Jin Woong Kim

Chong-sam Chung

Junghoon Lee

In-oh Hwang

Sung-hyun Kim

Jin-Kyung Lee

Youngjae Park

Kwan-Woo Song

Han Sol Seo

Jung-Ik Ha

Joon Seon Jeong

Junghyun Lee

In-Joo Kim

Yoonsup Kim

Young-jae Park

Taeho Lee

Hyun-seok Yang

Dong-yun Hwang

Mu-kun An

Hui Zhao

Joong-gon Kim

Noh-cheol Park

Ii-kang Na

Jieun Ban

A compressor control apparatus includes a rectifier configured to rectify AC power to DC power; an inverter including a plurality of switching elements, configured to convert the DC power into a three-phase voltage according to a pulse width modulation (PWM) signal applied to the plurality of switching elements; a motor configured to receive a three-phase current based on the three-phase voltage; a current detector configured to detect a sum of a first phase current, a second phase current, and a third phase current supplied to the motor; and a controller configured to differently determine a duty ratio of the PWM signal applied to each of the plurality of switching elements, and to determine the first phase current, the second phase current, and the third phase current, respectively, based on the determined duty ratio and the sum of the currents detected from the current detector.

Apparatus and method of controlling compressor, and air conditioner including the same

A method of controlling operations of a participating controlled device in a network that includes a control device and the participating controlled device, the method including: receiving operation limiting information from the participating controlled device, the operation limiting information including combinations of allowed operations from among a plurality of operations that the participating controlled device is capable of performing, and power consumption levels that are relative amounts of power consumption of the combinations of allowed operations; setting a power consumption level corresponding to the participating controlled device, from among the power consumption levels, based on information regarding time-based price and the operation limiting information; and controlling the operations of the participating controlled device based on the set power consumption level.

Method and apparatus for controlling operations of devices based on information regarding power consumption of the devices

A medical imaging apparatus includes a controller which generates a user interface (UI) image, a display which displays the UI image, and a UI device which receives an input which relates to the UI image. The UI image may include a first tab which includes a plurality of first parameter sets which respectively correspond to a plurality of imaging modes, and a second tab which includes a second parameter set which corresponds to an imaging mode selected from among the plurality of imaging modes.

Medical imaging apparatus and method of displaying user interface image

An energy management device which manages energy usage of at least one electric device, the energy management device including a sensor unit for detecting environment conditions including at least one of temperature, humidity, and luminance of an environment where the electric device is used; a pattern analyzing unit for analyzing an energy usage pattern of a user for using the electric device; and an energy management unit for generating energy management information for managing energy usage of the electric device based on the detected environment conditions and the analyzed energy usage pattern.

Method and apparatus for managing energy by analyzing energy usage pattern of electric device

Disclosed herein are a motor driving apparatus and a controlling method thereof. The motor driving apparatus includes a motor having a rotor including a permanent magnet, and a stator, an inverter to supply a driving power to the motor, and a control unit to estimate a parameter using a startup estimation when a rotation speed of the rotor is less than a preset startup speed, to estimate the parameter using a driving estimation with compensating for a dead time when the rotation speed of the rotor is equal to or greater than the preset startup speed and a torque of the rotor is equal to or less than a preset driving torque, and to estimate the parameter using the driving estimation without the dead time compensation when the rotation speed of the rotor is equal to or greater than the preset startup speed and the torque of the rotor exceeds the preset driving torque.

Motor driving apparatus and controlling method thereof

A signal quality measuring apparatus includes a binary signal generating unit to generate a binary signal from an input signal; a level information extracting unit to extract level information from a relationship between the input signal and the binary signal using at least two window lengths; and a quality calculating unit to calculate a quality of the input signal based on the level information.

Signal quality measuring apparatus and method thereof

An optical disk apparatus includes a light focusing element arranged to face a disk and to focus light emitted from a light source on the disk, an actuator to move the light focusing element towards and away from the disk according to an actuator driving voltage, a light intensity detection unit to detect an intensity of light reflected by the light focusing element and generate a gap error signal based on the detected intensity, a servo unit to generate the actuator driving voltage and a predetermined threshold voltage based on the gap error signal generated by the light intensity detection unit and to provide the actuator driving voltage to the actuator, a distance detection unit to detect a first distance at which the actuator driving voltage is maintained when the threshold voltage is detected using the gap error signal and to detect a second distance at which a gap between the light focusing element and the disk is shorter than the first distance and at which a gap servo operation is started based on the gap error signal; and a control unit to control the servo unit to start the gap servo operation based on the detected first and second distances.

Optical disk apparatus and method of driving the same

An optical disc apparatus, and a method of driving the same, includes a light focusing element disposed to focus light emitted from a light source onto a disc; an actuator to move the light focusing element toward or away from the disc according to a voltage applied to the actuator; a light intensity detection unit to detect the intensity of light reflected from the disc; a servo unit to generate a gap error signal and a third voltage, the third voltage being the sum of a first voltage and a second voltage, and to apply the generated third voltage to the actuator; and a control unit to control the servo unit to perform a gap pull-in operation when the light focusing element is moved toward the disc according to the gap error signal and the third voltage.

Optical disc apparatus and method of driving the same

A gap pull-in method and an optical disc apparatus. Whether light condensed on a disc as an actuator ascends is near-field light is determined using a gap error signal. The range of an actuator driving voltage value during a section where the decrease rate of the gap error signal is constant is obtained when it is determined that the light condensed on the disc is near-field light. Gap pull-in is performed on the disc during a section where the actuator driving voltage value is within the obtained range.

Near-field gap pull-in method and optical disc apparatus therefor

A focusing control method of an optical information storage media recording and/or reproduction apparatus controlling a focusing operation by moving an objective lens upwards or downwards in a direction towards or away from an optical information storage medium having a plurality of data layers includes receiving a focusing lead-in command signal to focus an optical beam on a target data layer, compensating for spherical aberration with respect to the target data layer, detecting a focus error signal based on an intensity of the optical beam reflected from the optical information storage medium and condensed by an optical detector, identifying the target data layer using an amplitude or a frequency of the focus error signal, and focusing the optical beam on the target data layer by moving the objective lens in an opposite direction from a direction in which the objective lens is initially moved.

Method of controlling focus of optical information storage media recording and/or reproduction apparatus and apparatus therefor

A near field optical recording/reproducing apparatus includes a light source, an objective lens to form a spot by focusing light emitted from the light source, a solid immersion lens to generate an evanescent wave by using the spot formed by the objective lens, a photodetector to measure an amplitude of a gap error signal that is totally reflected by the solid immersion lens, and an operating unit to generate a normalized gap error signal by using an amplitude of a driving signal applied to the light source and the amplitude of the gap error signal measured by the photodetector.

Near field optical recording/reproducing apparatus and method of normalizing gap error signal of the same

Disclosed is a mouse device in which an audio signal supplied from a computer or the like is regenerated through a mouse body itself. The mouse device includes a body housing a click button positioned on an upper side thereof for operating the mouse device, and a mouse module installed therein for processing a sensing signal according to the movement thereof and a click signal generated by clicking the click button and then inputting the signals to an external computer; and an exciter attached to one side of the body housing for applying a corresponding sound wave to the body housing when an audio signal is applied thereto so that the body housing is substantially vibrated to regenerate sound. This mouse device may generate sound through the mouse body itself though there is not equipped any external speaker.

Mouse device having voice output unit

Growing community of inventors

Suwon-si, South Korea

Jong-hyun Shin