Patent application number | Description | Published |
20090057933 | Optical Member Fabricating Apparatus and Method and Forming Mold Used for the Same - Provided is an apparatus for fabricating an optical member. The apparatus includes a first roll around which a base film is wound, a second roll around which a base film on which a coating liquid is applied in a predetermined pattern is wound, two or more guide rolls disposed between the first and second rolls to convey the base film, an injection unit for injecting the coating liquid, a pattern molding unit engaged with one of the guide rolls to apply the injected coating liquid on the base film in the predetermined pattern, and a hardening unit for hardening the coating liquid applied on the base film. | 03-05-2009 |
20090061038 | Optical Member Fabricating Apparatus and Method and Forming Mold Used for the Same - Provided is an apparatus for fabricating an optical member. The apparatus includes a first roll around which a base film is wound, a second roll around which a base film on which a coating liquid is applied in a predetermined pattern is wound, two or more guide rolls disposed between the first and second rolls to convey the base film, an injection unit for injecting the coating liquid, a pattern molding unit engaged with one of the guide rolls to apply the injected coating liquid on the base film in the predetermined pattern, and a hardening unit for hardening the coating liquid applied on the base film. | 03-05-2009 |
20110278913 | REGENERATIVE BRAKE CONTROL METHOD - Disclosed herein is a regenerative brake control method of a regenerative brake system using an electronic control brake, which is devised to increase a regenerative brake energy recovery rate of a vehicle via brake hydraulic pressure control under low brake pressure conditions. The regenerative brake control method includes determining whether or not regenerative brake cooperative control of non-drive wheels is necessary based on a vehicle speed and driver requested brake force, and selecting whether or not to perform the regenerative brake cooperative control, thereby achieving vehicle braking stability. If the regenerative brake cooperative control is necessary, brake hydraulic pressure of non-drive wheels are controlled to increase regenerative brake force of drive wheels, which increases a regenerative brake energy recovery rate. | 11-17-2011 |
20120265419 | VEHICLE BRAKING SYSTEM AND CONTROL METHOD THEREOF - Disclosed herein is a vehicle braking system and control method. The vehicle braking control method includes detecting velocities of respective wheels provided at a vehicle, calculating a vehicle velocity based on the velocities of the respective wheels, calculating slip amounts of the respective wheels by comparing the vehicle velocity and the velocities of the respective wheels, calculating change rates of the slip amounts of the respective wheels, obtaining regenerative braking force corresponding to one of the slip amounts and the slip change rates of the respective wheels, and controlling regenerative braking using the obtained regenerative braking force. | 10-18-2012 |
Patent application number | Description | Published |
20090170507 | LOCATION UPDATING METHOD AND APPARATUS FOR MOBILE TERMINAL IN RADIO NETWORK - A location updating method and apparatus for a mobile terminal in a radio network is provided for preventing a location updating request of a mobile terminal from being rejected by a network with an invalid cause of a rejection. The location updating method for a mobile terminal includes receiving a location updating reject message from a first network, the location updating reject message including a cause of a rejection indicating that the mobile terminal is not registered with the first network, checking a first network information of the first network, determining whether the first network information differs from a second network information of a second network, maintaining, when the first and second network information are different from each other, an operational state of the mobile terminal as a valid state, and requesting, when the home network is discovered, the home network for a location updating. | 07-02-2009 |
20150057887 | METHOD OF CONTROLLING ACTIVE REAR WHEEL STEERING APPARATUS - A method of controlling an active rear wheel steering apparatus according to the present invention is a method of controlling a rear wheel steering apparatus of a vehicle with the rear wheel steering apparatus, the method including a step of determining an operation state of the rear wheel steering apparatus, a step of determining a running mode of the vehicle, and a step of controlling the rear wheel steering apparatus of the vehicle according to a result of determining at least one of the operation state of the rear wheel steering apparatus and the running mode of the vehicle. | 02-26-2015 |
Patent application number | Description | Published |
20100295087 | Light Emitting Diode with High Electrostatic Discharge and Fabrication Method Thereof - The present invention relates to a light emitting diode with high electrostatic discharge and a fabrication method thereof, and more specifically to a light emitting diode comprising a first electrode layer provided over a upper surface of a first semiconductor layer and a upper surface of a second semiconductor layer; a transparent electrode layer formed on the upper surface of the second semiconductor layer, spaced from the first electrode layer; and a second electrode layer provided on a upper surface of the transparent electrode layer. With the present invention, there is provided a light emitting diode element with resistance against electrostatic discharge and with high reliability being strong against electrical impact, by selecting a structure arranging a form of an electrode differently from a conventional electrode. | 11-25-2010 |
20110198635 | Light Emitting Diode With Metal Piles and Multi-Passivation Layers and Its Manufacturing Method - The present invention relates to a light emitting diode with metal piles and one or more passivation layers and a method for making the diode including a first steps of performing mesa etching respectively on a first semiconductor layer and a second semiconductor layer belonging to stacked layers formed on a substrate in sequence! a second step of forming a reflector layer on the mesa-etched upper and side face! a third step of contacting one or more first electrodes with the first semiconductor layer and one or more second electrodes through the reflector layer with the second semiconductor layer; a fourth step of forming a first passivation layer on the reflector layer and the contacted electrodes; and a fifth step of connecting the first electrodes to a first bonding pad through one or more first electrode lines, bring one ends of vertical extensions having the shape of a metal pile into contact with one or more second electrodes, and connecting the other ends of the vertical extensions to a second bonding pad through one or more second electrode lines. As effects of the present invention, the loss of light emitting area decreases and current diffusion efficiency increases. | 08-18-2011 |
20110260191 | LIGHT-EMITTING DIODE HAVING ZINC OXIDE NANORODS AND METHOD OF FABRICATING THE SAME - The light extraction efficiency of a typical light-emitting diode (LED) is improved by incorporating one-dimensional ZnO nanorods. The light extraction efficiency is improved about 31% due to the waveguide effect of ZnO sub-microrods, compared to an LED without the nanorods. Other shapes of ZnO microrods and nanorods are produced using a simple non-catalytic wet chemical growth method at a low temperature on an indium-tin-oxide (ITO) top contact layer with no seed layer. The crystal morphology of a needle-like or flat top hexagonal structure and the density and size of ZnO microrods and nanorods are easily modified by controlling the pH value and growth time. The waveguide phenomenon in each ZnO rod is observed using confocal scanning electroluminescence microscopy (CSEM) and micro-electroluminescence spectra (MES). | 10-27-2011 |
20120086040 | LIGHT-EMITTING DIODE HAVING A WAVELENGTH CONVERSION MATERIAL LAYER, AND METHOD FOR FABRICATING SAME - Provided is a light-emitting diode having a wavelength conversion material and a method for fabricating the same. The light-emitting diode comprises: a base structure; a light-emitting diode chip arranged on the base structure; and a wavelength conversion material layer arranged on the light-emitting diode chip, such that the area adjacent the upper surface of the light-emitting diode chip is thicker than the area adjacent to the side surface of the light-emitting diode chip. In addition, the method for fabricating a light-emitting diode comprises: a step of arranging the light-emitting diode chip on the base structure; and a step of arranging a wavelength conversion material layer containing a light-transmitting photocurable material on the light-emitting diode chip, such that the area thereof adjacent to the upper surface of the light-emitting diode chip is thicker than the area thereof adjacent to the side surface of the light-emitting diode chip. | 04-12-2012 |
20140138613 | LIGHT EMITTING DIODE HAVING HETEROGENEOUS PROTRUSION STRUCTURES - An object of the present invention is to provide a light emitting diode having a heterogeneous material structure and a method of manufacturing thereof, in which efficiency of extracting light to outside is improved by forming depressions and prominences configured of heterogeneous materials different from each other before or in the middle of forming a semiconductor material on a substrate in order to improve the light extraction efficiency. | 05-22-2014 |
Patent application number | Description | Published |
20090121867 | INDOOR LOCATION SYSTEM HAVING SENSOR AND METHOD FOR CHECKING LOCATION USING THE SAME - An indoor location system having a sensor and a method for checking an indoor location using the indoor location system are disclosed. The method includes: calculating a current location coordinate by using nodes; calculating a first movement distance by comparing the current location coordinate and a stored previous location coordinate; calculating a second movement distance through a sensor; and storing the current location coordinate instead of the previous location coordinate when the distance between the first movement distance and the second movement distance is smaller than a predetermined threshold value. Accordingly, an accurate location of an object can be recognized indoors and an error can be prevented from being caused when the location of the object is recognized. | 05-14-2009 |
20100110837 | METHOD AND APPARATUS FOR WIRELESS COMMUNICATION USING AN ACOUSTIC SIGNAL - An apparatus and method for wireless communication using an acoustic signal in a system including a first device including a loudspeaker and a second device including a microphone. The first device generates wireless communication information, converts the wireless communication information to an acoustic signal, and transmits the acoustic signal to the second device using the loudspeaker. The second device receives the acoustic signal using the microphone, extracts the wireless communication information from the acoustic signal, generates an acknowledgment signal according to the extracted wireless communication information, and transmits the acknowledgment signal to the first device on a wireless communication channel. | 05-06-2010 |
20100290484 | ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD - An encoder includes a precoder for encoding an input information object according to a preset encoding scheme and storing the encoded information object in a precoder buffer, a sample number/address generation unit for generating a sample number of each sample and an address, which corresponds to each bit of each sample and the address of the precoder buffer, a multiplexer for selecting a bit of the precoder buffer corresponding to the address generated by the sample number/address generation module, a sampling buffer for storing a bit of each sample output from the multiplexer, a control packet generation module for generating a control packet including information on the sample number generated by the sample number/address generation module, a packet assembling unit for assembling the sample stored in the sampling buffer with the control packet generated by the control data generation module, and a modulation module for modulating the packet output from the packet assembling unit into a sound signal according to a preset scheme. | 11-18-2010 |
20110142073 | METHOD FOR ENCODING INFORMATION OBJECT AND ENCODER USING THE SAME - A method for encoding an information object in a communication system by storing the information object in a buffer; generating a sampling set including bits randomly selected from the buffer and bits regularly selected from the buffer; generating control channel data including a sampling set number of the sampling set and size information for the information object; and modulating the sampling set and the control channel data. | 06-16-2011 |
20110143677 | METHOD FOR TRANSMITTING OBJECT BETWEEN DEVICES HAVING MULTI-RADIO INTERFACE - A method for transmitting, by a mobile device, a data object, is provided, and includes estimating expected transmission times required for transmitting an object between devices by an acoustic communication link and supported radio interfaces, based on a size of the object, transmitting the object through an acoustic communication channel when the link is estimated to provide a shortest expected transmission time, and determining rankings of the radio interfaces according to the expected transmission times when the acoustic communication link does not provide a shortest expected transmission time, transmitting rankings information and configuration information on the supported radio interfaces through the acoustic communication channel by a configuration container, and transmitting the object through a radio interface through which a response is received. | 06-16-2011 |
20110144979 | DEVICE AND METHOD FOR ACOUSTIC COMMUNICATION - Disclosed is an acoustic communication method that includes filtering an audio signal to attenuate a high frequency section of the audio signal; generating a residual signal which corresponds to a difference between the audio signal and the filtered signal; generating a psychoacoustic mask for the audio signal based on a predetermined psychoacoustic model; generating a psychoacoustic spectrum mask by combining the residual signal with the psychoacoustic mask; generating an acoustic communication signal by modulating digital data according to the acoustic signal spectrum mask; and combining the acoustic communication signal with the filtered signal. | 06-16-2011 |
Patent application number | Description | Published |
20110269879 | HIGH-STRENGTH POLYPHENYLENE SULFIDE/POLYETHYLENE TEREPHTHALATE BLEND RESIN COMPOSITION AND METHOD FOR PREPARING THE SAME - The present invention relates to a high-strength inflammable blend resin composition including a polyphenylene sulfide resin and a polyethylene terephthalate resin. More specifically, the resin composition of the present invention includes: a basic blend resin containing 10 to 80 wt. % of a polyphenylene sulfide resin, and 20 to 90 wt. % of a polyethylene terephthalate resin; and 0.1 to 20 parts by weight of a modified polystyrene or a styrene-based elastomer with respect to 100 parts by weight of the basic blend resin. | 11-03-2011 |
20130346070 | DEVICE AND METHOD FOR ACOUSTIC COMMUNICATION - Disclosed is an acoustic communication method that includes filtering an audio signal to attenuate a high frequency section of the audio signal; generating a residual signal which corresponds to a difference between the audio signal and the filtered signal; generating a psychoacoustic mask for the audio signal based on a predetermined psychoacoustic model; generating a psychoacoustic spectrum mask by combining the residual signal with the psychoacoustic mask; generating an acoustic communication signal by modulating digital data according to the acoustic signal spectrum mask; and combining the acoustic communication signal with the filtered signal. | 12-26-2013 |
20140181623 | METHOD FOR ENCODING INFORMATION OBJECT AND ENCODER USING THE SAME - A method and apparatus are provided for encoding an information object. The method includes storing the information object in a buffer; generating a sampling set including bits selected from the buffer according to a predetermined rule and bits randomly selected from the buffer; generating control channel data including information on the sampling set; and modulating the sampling set and the control channel data. | 06-26-2014 |
20140241127 | ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD - Encoding and decoding methods are provided. An information object is encoded according to a preset encoding scheme. A preset set of bits is selected from the encoded information object and the selected set of bits is output as a sample. A control packet including information on a sample number is generated. The sample is assembled with the control packet. The sample is modulated into a sound signal according to a preset scheme. An input sound signal is demodulated according to the preset scheme. Sample bits and control packet bits containing information of the sample are separated from each other in demodulated received bits. Address information corresponding to each bit of the sample is generated according to the control packet. A soft decision of the sample bits is summed for each piece of the generated address information. A sample decoding of the summed soft decision of the sample bits is performed. | 08-28-2014 |
20140362993 | METHOD AND APPARATUS FOR WIRELESS COMMUNICATION USING AN ACOUSTIC SIGNAL - Systems, apparatuses, and methods for securing wireless communication using an acoustic signal are described. In one method involving a first and second device, the second device generates, when connecting to the first device, connection initiation information including key information for secure communication, converts the connection initiation information to an acoustic signal, and transmits the acoustic signal to the first device through an acoustic communication channel. Then the second device monitors a radio wireless channel, which is secured using the key information for secure communication, to determine whether a valid response is received from the first device and, upon receipt of the valid response, discontinues transmission of the acoustic signal and begins communicating with the first device securely on the radio wireless channel. | 12-11-2014 |