Hae-Wook
Hae Wook Han, Gyeonggi-Do KR
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20150021604 | CMOS IMAGE SENSOR HAVING OPTICAL BLOCK AREA - A CMOS image sensor includes an active pixel structure suitable for sensing light incident from outside and converting a sensed light into an electrical signal, and an optical block structure suitable for blocking a visible light and passing a UV light to check and evaluate an electrical characteristic of the active pixel area. The UV pass filter includes first and second insulation layers comprising an insulator, and a metal layer formed between the first and second insulation layers. | 01-22-2015 |
Hae Wook Kim, Bucheon-Si KR
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20160100466 | LIGHT EMITTING DIODE DRIVING CIRCUIT AND LIGHTING APPARATUS HAVING THE SAME - A light emitting diode (LED) driving circuit includes a flicker elimination unit configured to perform a flicker removal for LED modules and a driving control unit configured to pause a procedure of the flicker removal based on an AC input voltage that is regulated through a Triode for Alternating Current (TRIAC) dimmer, so as to cause a brightness of the LED modules to be dimmed. Therefore, the LED driving circuit selectively adjusts an LED brightness level and removes LED flicker by using a TRIAC dimmer and controls the brightness level of the LED module based on a dimming level. | 04-07-2016 |
Hae Wook Kim, Incheon KR
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20150256068 | SWITCH CONTROL CIRCUIT, SWITCH CONTROL METHOD AND CONVERTER USING THE SAME - Provided is a switch control circuit for controlling a current control switch of a power supply, the power supply including a load, an inductor and the current control switch that are series-coupled to an input power. The switch control circuit includes a current measuring unit configured to measure a current flowing into the load, a current integral unit configured to integrate the measured current, a comparison unit configured to compare the integrated current value and a reference value and a control unit coupled to the current control switch, the control unit being configured to turn off the current control switch when the integrated current is substantially the same as the reference value and turn on the current control switch when a predefined off-time elapses from a time when the current control switch is turned off. The switch control circuit may quickly and accurately control an average current. | 09-10-2015 |
Hae Wook Nam, Yeonsu-Gu KR
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20150021272 | APPARATUS FOR PURIFYING WASTEWATER AND METHOD THEREOF - The present inventions relates to an apparatus for purifying wastewater and a method thereof, which comprises: a stirring part to make bubbles impregnated into floc through high speed stirring by adding floc forming materials to influent and stirring them; an air supply part to supply air to the stirring part to make more bubbles impregnated; a pumping part to conduct pressurized conveying of the floc included treatment water; a cyclone part to separate high density floc to downstream and treatment water with low density floc to upstream from the pressurized treatment water; and a flotation part to separate floc from the treatment water with floc supplied from the cyclone part. Therefore, the present invention have an effect that it is possible to improve purification speed of wastewater and obtain good quality of purified water. | 01-22-2015 |
Hae Wook Park, Anyang-Si KR
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20140247824 | METHOD AND DEVICE FOR PROCESSING UPLINK SIGNAL IN WLAN SYSTEM - Provided are a method and device for processing an uplink (UL) signal in a WLAN system. An access point (AP) receives a request to send (RTS) frame from one station (STA) among a plurality of STAs, transmits a group identifier (ID) of a group to which STAs for performing UL multi user multiple-input multiple-output (MU-MIMO) transmission together with the one STA, among group IDs of a group to which the one STA belongs, and receives UL signals from the STAs which perform the UL MU-MIMO transmission such that the received UL signals are processed. | 09-04-2014 |
20140301383 | METHOD AND APAPRATUS FOR TRANSMITTING A FRAME IN A WIRELESS LAN SYSTEM - The present invention relates to a method and apparatus for transmitting a frame in a wireless LAN system. An access point (AP) receives a single orthogonal frequency division multiplexing (OFDM) symbol from each of a plurality of stations (STA) and a single-tone request to send (sRTS) frame through a single subcarrier, selects STAs for performing uplink (UL) multiuser (MU)-multiple input multiple output (MIMO) transmission, and transmits to the plurality of STAs a single-tone clear to send (sCTS) frame allocated to the same subcarrier as a subcarrier to which the sRTS frames received from the selected STAs are allocated. | 10-09-2014 |
Hae Wook Park, Seoul KR
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20110059765 | METHOD AND APPARATUS OF SELECTING TRANSMISSION/RECEPTION MODE OF PLURAL TRANSMISSION/RECEPTION PAIRS - An achievable sum data rate with respect to each of available candidate transmission/reception modes may be calculated to select a transmission/reception mode of transmission/reception pairs repeatedly using radio resources. A transmission/reception mode to be applied may be selected from the candidate transmission/reception modes based on the calculated sum data rate. Information associated with the selected transmission/reception mode may be shared by the transmission/reception pairs. | 03-10-2011 |
20120224648 | MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) COMMUNICATION SYSTEM USING REGULARIZED BEAMFORMING - Provided are a beamforming vector determining method and an apparatus which may compute a normalization factor of each of a plurality of terminals by normalizing a predetermined reference value using noise power occurring in each of the terminals. A leakage channel of each of the terminals may be estimated, and a beamforming vector for each of the terminals may be determined with respect to a plurality of base stations based on the leakage channel of each of the terminals. | 09-06-2012 |
20150282197 | METHOD AND DEVICE FOR TRANSMITTING/RECEIVING FEEDBACK SIGNAL IN MULTI-CELL COOPERATIVE COMMUNICATION SYSTEM - A UE is able to transmit a feedback signal to at least one of multiple BSs in a multi-cell cooperative communication system including the multiple BSs. The UE performs a method that includes: allocating a feedback resource for transmission of the feedback signal to the at least one BS in view of distances between the multiple BSs and the UE; creating feedback resource allocation information representing the result of the feedback resource allocation; and transmitting the created feedback allocation information to the multiple BSs. | 10-01-2015 |
Hae-Wook Han, Gyeongbuk KR
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20110096264 | COLOR MIXING LENS AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - The present invention provides a color mixing lens which can improve color reproducibility, be made slim and adjust an emission pattern; and a liquid crystal display device having the same. The color mixing lens includes a light receiving portion having light receiving recesses which respectively house light emission diodes formed at a side surface thereof for positioning at least two light emission diodes at the side surface for producing color lights different from each other, a color mixing portion formed on the light receiving portion for mixing the lights from the light emission diodes into a white color light, and a light emission portion formed on the color mixing portion for emitting the white light from the color mixing portion through a top surface thereof. | 04-28-2011 |
Hae-Wook Han, Pohang-Si KR
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20110096272 | COLOR MIXING LENS AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - The present invention provides a color mixing lens which can improve color reproducibility, be made slim and adjust an emission pattern; and a liquid crystal display device having the same. The color mixing lens includes a light receiving portion having at least two light emission diodes positioned at a side for emitting color lights different from each other and light receiving recesses for placing the light emission diodes therein respectively, a color mixing portion formed on the light receiving portion for mixing the lights from the light emission diodes into a white color light, and a light emission portion formed on the color mixing portion for emitting the white light from the color mixing portion through a side thereof. | 04-28-2011 |
20150028210 | TUNING-FORK BASED NEAR FIELD PROBE FOR SPECTRAL MEASUREMENT, NEAR-FIELD MICROSCOPE USING THE SAME, AND SPECTRAL ANALYSIS METHOD USING NEAR-FIELD MICROSCOPE - The present invention is provided to remove scattering from other parts, except for an end part of a nano-probe, in a near-field microscope, and to enable a spectral analysis by delaying the generation of multiple reflections caused through the shaft of the nano-probe. A first characteristic of the present invention is to temporally delay generation of multiple reflections by manufacturing a probe portion to have a predetermined length or more in a tuning-fork based near-field probe. A second characteristic of the present invention is to provide a near-field microscope which includes a tuning-fork based near-field probe having a structure as above, and can measure a time-domain transient reaction of a scattered wave. A third characteristic of the present invention is to provide a method for performing a spectral analysis on a time-domain signal measured by the near-field microscope. | 01-29-2015 |
Hae-Wook Lee, Daegu-City KR
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20080311308 | Composition for Functional Coatings, Film Formed Therefrom and Method for Forming the Composition and the Film - The present invention relates to compositions for functional films, and more particularly to compositions for functional films such as a heat ray screening film compatible with hydrolic or alcoholic and anti-hydrolic resin binder, a near infrared screening film, a chrominance correcting film, a conductive film, a magnetic film, a ferromagnetic film, a dielectric film, a ferroelectric film, an electrochromic film, an electroluminescence film, an insulating film, a reflecting film, a reflection preventing film, a catalyst film, a photocatalyst film, a light selectively absorbing film, a hard film, and a heat resisting film, films formed therefrom, and a method of forming the compositions and the films. | 12-18-2008 |