Abstract: A backlight unit includes a light source, an optical member for adjusting a traveling path of light exiting from the light source, a frame accommodating and fixing the optical member and including a plane portion, a sidewall portion vertically extending from the plane portion and at least one frame fastening portion downwardly extending from the sidewall portion and a lower receiving member for accommodating and fixing the frame. The lower receiving member includes a bottom portion having at least one hole formed therein to be fastened to the frame fastening portion and a side surface portion upwardly extending from edges of the bottom portion.

Abstract: Disclosed herein are a WiMAX system analyzer having an RAS emulation function and a method of acquiring UL synchronization and testing a PSS. The WiMAX system analyzer includes a clock counter, a D/A conversion unit, an A/D conversion unit, an RF processing unit, switching means, a signal generation unit, a signal analysis unit, and control means. The clock counter creates a frame number. The D/A conversion unit converts a DL sub-frame into an analog signal. The A/D conversion unit converts a UL sub-frame signal into digital data. The RF processing unit RF-modulates the DL sub-frame, outputs the modulated DL sub-frame, and demodulating a modulated UL sub-frame. The switching means connects the RF processing unit to the D/A conversion unit or the A/D conversion unit. The signal generation unit assigns a CID, and creating a DL sub-frame. The signal analysis unit decodes the UL sub-frame, and conducts various analyses.

Abstract: A user interface apparatus using three-dimensional axes and a user interface apparatus using two-dimensional planes, each of the two-dimensional planes being formed by two of three-dimensional axes, are provided. The user interface apparatus uses the three-dimensional axes or the two-dimensional planes to select a menu or to search for desired information in a device, such as a mobile terminal.

Abstract: Disclosed herein is a method for generating a test signal for testing the accuracy of the CINR measurement of a subscriber station. The method includes step (a) of checking a preamble code corresponding to a predetermined cell ID, reading corresponding preamble data from a preamble code table, and taking it as desired preamble data, step (b) of completing generation of desired signal data by generating desired pilot data and various information data, step (c) of randomly selecting one preamble code from among preamble codes corresponding to cell IDs other than the cell ID, reading corresponding preamble data from the preamble code table, and taking the preamble data as interference preamble data, step (d) of generating interference pilot data, and step (e) of generating test signal data by adding the interference preamble data and the interference pilot data to the desired signal data.

Abstract: Provided is a focus servo process automatic selecting method. In a related art optical pickup apparatus, only one of AD and DAD is selected and used when a focus servo is performed for disk detection and a focus-on operation. According to the method, servo crosstalk values of the two focus servo processes are compared and a suitable focus servo process is automatically selected, so that an optimum focus servo is realized.

Abstract: A cap assembly for a battery and a battery incorporating the cap assembly. The cap assembly includes a plate that connects the electrodes of the bare cell of the battery. The cap assembly includes a vent member that includes a protrusion that is physically connected to the plate. Excess pressure within the bare cell results in the protrusion disconnecting from the plate thereby interrupting current. The vent further includes two circular notches, an inner notch and an outer notch. The vent further includes a cross notch that extends radially outward so as to intersect and extend beyond both the first and second notches. The notches are configured to release when the pressure within the bare cell exceeds a burst pressure.

Abstract: A backlight assembly and a display device including the backlight assembly are provided for one or more embodiments, where the display device is slim, lightweight, and requires low manufacturing costs because the device integrates a receiving container and a light generating unit cover member. According to an embodiment, the backlight assembly includes a first light generating unit, a wire electrically connected to the first light generating unit, a first fixing member including a groove to fix the first light generating unit and a wire outlet, and a receiving container comprising a light generating unit cover member. The first fixing member includes a protruding portion extending outwardly from the receiving container and the wire outlet formed on the protruding portion.

Abstract: Disclosed is a cooling and heating air conditioner capable of performing heating more stably, preventing frost formation on coils of an outdoor unit even at subzero temperature in winter by using first and second heat exchangers and an auxiliary expansion valve. The air conditioner according to the present invention comprises an electronic control valve opened when the outside temperature is less than a preset value, a first heat exchanger performing heat exchange between high temperature liquid coolant and coolant passed through the outdoor unit and an auxiliary expansion valve, and a second heat exchanger disposed in front of the outdoor unit to induct thereinto the high temperature coolant. Since the second heat exchanger heats up the outside air through heat exchange before supplying the air to the outdoor unit, evaporation of the coolant can be stably performed in the outdoor unit, while preventing frost formation. Accordingly, heating can be performed constantly.

Abstract: A backlight unit includes a light source, an optical member for adjusting a traveling path of light exiting from the light source, a frame accommodating and fixing the optical member and including a plane portion, a sidewall portion vertically extending from the plane portion and at least one frame fastening portion downwardly extending from the sidewall portion and a lower receiving member for accommodating and fixing the frame. The lower receiving member includes a bottom portion having at least one hole formed therein to be fastened to the frame fastening portion and a side surface portion upwardly extending from edges of the bottom portion.

Abstract: Provided is a focus servo process automatic selecting method. In a related art optical pickup apparatus, only one of AD and DAD is selected and used when a focus servo is performed for disk detection and a focus-on operation. According to the method, servo crosstalk values of the two focus servo processes are compared and a suitable focus servo process is automatically selected, so that an optimum focus servo is realized.

Abstract: Disclosed herein are a WiMAX system analyzer having an RAS emulation function and a method of acquiring UL synchronization and testing a PSS. The WiMAX system analyzer includes a clock counter, a D/A conversion unit, an A/D conversion unit, an RF processing unit, switching means, a signal generation unit, a signal analysis unit, and control means. The clock counter creates a frame number. The D/A conversion unit converts a DL sub-frame into an analog signal. The A/D conversion unit converts a UL sub-frame signal into digital data. The RF processing unit RF-modulates the DL sub-frame, outputs the modulated DL sub-frame, and demodulating a modulated UL sub-frame. The switching means connects the RF processing unit to the D/A conversion unit or the A/D conversion unit. The signal generation unit assigns a CID, and creating a DL sub-frame. The signal analysis unit decodes the UL sub-frame, and conducts various analyses.

Abstract: Disclosed herein is a nitride semiconductor light emitting device, which comprises plural active layers emitting light of different wavelengths. The device comprises p-type and n-type nitride layers, and a plurality of active layers sequentially stacked between the p-type and n-type nitride layers to emit light having different wavelengths. The active layers comprise at least a first active layer to emit a first wavelength light, and a second active layer to emit a second wavelength light, of which wavelength is longer than that of the first wavelength light. Both the first and second active layers are composed of at least one quantum well layer and a quantum barrier layer alternately arranged, and the first active layer is disposed closer to the p-type nitride layer than the second active layer. The number of quantum well layers of the first active layer is less than that of the second active layer.

Abstract: The invention relates to a nitride light emitting device including first and second conductivity type nitride layers and a plurality of active regions emitting light of different wavelength. The active regions are sequentially formed between the first and the second conductivity type nitride layers. The active regions include at least one first active region having a plurality of first quantum barrier layers and quantum well layers, and a second active region emitting light of a wavelength larger than that of the first active region. The second active region has a plurality of second quantum barrier layers and at least one discontinuous quantum well structure formed between the plurality of second quantum barrier layers. The discontinuous quantum well structure comprises a plurality of quantum dots or crystallites.

Abstract: The present invention provides methods for manufacturing a nitride layer and a vertical nitride semiconductor light emitting device. In manufacturing the nitride layer according to the invention, a sapphire substrate is prepared. A buffer layer made of a material having a melting point and a thermal conductivity higher than those of nitride is formed on the sapphire substrate. Also, the nitride layer is formed on the buffer layer. Then a laser beam is irradiated to an underside of the sapphire substrate to remove the nitride layer. According to the invention, the nitride layer is made of a material having a composition expressed by AlxInyGa(1-x-y)N, where 0?x?1, 0?y?1, and 0?x+y?1. In addition, the buffer layer is made of SiC.

Abstract: The invention provides a high-quality vertical semiconductor light emitting device having fewer cracks and a manufacturing method thereof. In the vertical semiconductor light emitting device, an Si—Al alloy substrate is prepared. Then a p-type group III-V compound semiconductor layer is formed on the Si—Al alloy substrate. An active layer is formed on the p-type group III-V compound semiconductor layer. Also, an n-type group III-V compound semiconductor layer is formed on the active layer.

Abstract: The invention relates to a monolithic white light emitting device using wafer bonding or metal bonding. In the invention, a conductive submount substrate is provided. A first light emitter is bonded onto the conductive submount substrate by a metal layer. In the first light emitter, a p-type nitride semiconductor layer, a first active layer, an n-type nitride semiconductor layer and a conductive substrate are stacked sequentially from bottom to top. In addition, a second light emitter is formed on a partial area of the conductive substrate. In the second light emitter, a p-type AlGaInP-based semiconductor layer, an active layer and an n-type AlGaInP-based semiconductor layer are stacked sequentially from bottom to top. Further, a p-electrode is formed on an underside of the conductive submount substrate and an n-electrode is formed on a top surface of the n-type AlGaInP-based semiconductor layer.

Abstract: A positive active material for a rechargeable lithium battery is provided. The positive active material includes at least one compound selected from the group consisting of lithiated compounds, a metal oxide layer formed on a surface of the compound and metal oxide masses adhered on the metal oxide layer. The positive active material is produced by coating a compound with a metal alkoxide solution, an organic solution of a metal salt or an aqueous solution of a metal salt and heat-treating the coated compound. The compound is selected from the group consisting of lithiated compounds. Thereafter, the heat-treated compound is slow-cooled to 100 to 500° C. and the cooled compound is quenched to room temperature.