Abstract: The invention relates to hull sonars for a naval vessel. The hull sonar includes associating a transmitter formed by cylindrical rings with a receiver formed by at least two sets of hydrophones distributed over two transparent cylindrical surfaces that are coaxial with the transmitter. Thus, it is possible to reduce the weight and the total volume of the antenna and to compensate for the effect of the quality factor Q.

Abstract: The present invention relates to a lens driving device, more particularly, capable of adjusting an effective focal length determined by the relative distance of lenses in an optical device having a zooming function. In the lens driving device, a barrel unit has an internal space for containing a lens therein and a guide slot for allowing forward and backward movement of the lens through rotation of the barrel unit. A ring-shaped piezoelectric actuator unit is arranged adjacent to the barrel unit for being contracted or expanded radially in response to an external input signal. A drive member is mounted on the piezoelectric actuator unit and having a plurality of segments projected toward the barrel unit to contact the same.

Abstract: The invention relates to a device for receiving digital signals on the basis of two different standards conveyed on the same medium. A logic-level conversion device receives the digital signals and converts their logic levels into logic levels on the basis of a single standard. Reception is provided for receiving signals coded on the basis of a first standard, which signals are output by the logic-level conversion device. Signals coded on the basis of a second standard are converted into signals coded on the basis of the first standard, which signals are output by the logic-level conversion device. Signals are transferred which are output as converted signals coded on the basis of a second standard into signals coded on the basis of the first standard to the reception device upon reception of signals coded on the basis of the second standard, or for transferring signals output by the logic-level conversion device upon reception of signals coded on the basis of the first standard.

Abstract: A swash plate type compressor includes a front head portion having a suction chamber and a discharge chamber sectioned by a partition wall formed on an inner surface of the front head portion, and having at least one upper discharge guide groove and at least one lower discharge guide groove formed in an upper portion and a lower portion of the discharge chamber, respectively, a rear head portion having a suction chamber and a discharge chamber sectioned by a partition wall formed on an inner surface of the rear head portion, and having at least one upper discharge guide groove and at least one lower discharge guide groove formed in an upper portion and a lower portion of the discharge chamber, respectively, to correspond to the upper and lower discharge guide groove of the front head portion, a cylinder installed between the front and rear head portions or inside the front and rear head portions and having a plurality of bores installed such that pistons are capable of sliding therein, at least one upper disc

Abstract: A low temperature sinterable dielectric ceramic composition and a multilayer ceramic chip capacitor. The dielectric ceramic composition is expressed by the general formula: aBaTiO3-bMgCO3-cY2O3-dCr2O3-eV2O5-f(xZrO2-y(K,Li)2O-zSiO2) (x+y+z=1; 0.05?x?0.18, 0.01?y?0.08, and 0.7.4?z?0.93); in which a, b, c, d, e and f are molar ratios; a=100, 1.0?b?2.0, 0.2?c?2.0, 0.02?d?0.3, 0.02?e?0.3, and 0.5?f<2. The multilayer ceramic chip capacitor is prepared using the dielectric ceramic composition. The dielectric composition according to the present invention can be sintered at a low temperature without decrease of a dielectric constant, making it possible to make ultra thin-layered dielectrics.

Abstract: The present invention is an apparatus and method for making output signal (AC voltage) levels of MEMS capacitive sensors uniform, each including a microstructure being displaced by a certain force and a fixed electrode for detecting capacitance variation caused by gap size difference between the microstructure and the fixed electrode, the apparatus and method comprising so as to apply actuating current of a predetermined frequency to the microstructure, output a sensing signal of the fixed electrode while receiving a reference offset voltage, compare an RMS level of the sensing signal with a preset RMS level, and then adjust the reference offset voltage of the fixed electrode so that the sensing signal made equal to a target level.

Abstract: An interpolation method for producing full color images is disclosed. For a blue pixel, an interpolated green value is determined by green values of adjacent green pixels, and an interpolated red value is determined by red values of neighboring red pixels and a modification value. For a red pixel, an interpolated green value is determined by green values of adjacent green pixels, and an interpolated blue value is determined by blue values of neighboring blue pixels and a modification value. For a green pixel, an interpolated green value is determined by original green value of the green pixel and green values of neighboring green pixels, an interpolated red value is determined by red value of at least an adjacent red pixel and a modification value, and an interpolated blue value is determined by blue value of at least an adjacent blue pixel and a modification value.

Abstract: A dielectric ceramic composition of high dielectric constant and low dielectric loss, which can be co-fired with Ag electrodes, is provided for use in various parts of electric and electronic appliances. Based on a base composition with a high dielectric constant, the composition comprises glass frit and optionally CuO, as represented by the following formula: a wt. % {x CaO-y1 Sm2O3-y2 Nd2O3-w Li2O-z TiO2}+b wt. % (ZnO—B2O3—SiO2 based or Li2O—B2O3—SiO2 based glass frit)+c wt. % CuO wherein, 13.0 mol %?x?20.0 mol %; 10.0 mol %?y1+y2?17.0 mol %; 6.0 mol %?w?11.0 mol %; 60.0 mol %?z?67.0 mol % with the proviso that x+y1+y2+w+z=100; 85.0 wt. %?a?97.0 wt. %; 3.0 wt. %?b?15.0 wt. %; and c?7.0 wt. %.

Abstract: An apparatus and process for making an elastic composite sheet including a pair of rolls adapted to bond respective surfaces of a inelastic sheet and a elastic sheet and fed together into a nip of the rolls. One of the rolls is formed with ridges while the other roll is formed with grooves and the ridges are engaged with the grooves with spaces left between surfaces of the ridges and the grooves to form the inelastic sheet on its surface with stripe-like crests and flat troughs each defined between each pair of the adjacent crests; and the inelastic sheet is bonded along its troughs to the surface of the elastic sheet.

Abstract: The present invention relates to a laser anemometer making it possible to determine the relative velocity between the anemometer and an ambient medium. The architecture of the anemometer includes a laser source, emission and reception optics for focusing a laser beam onto a measurement zone containing particles in suspension in the ambient medium and for receiving the radiation back-scattered by the particles. It also includes an optical mixer for mixing the received radiation and reference radiation representing the radiation emitted by the source, and a detector at the output of the mixer. The relative velocity between the anemometer and the ambient medium is determined by computation on the basis of the Doppler effect generated by the radiation and detected by the detector. The laser source is located remotely from a common support which carries the optical emission and reception system as well as the mixer. It is connected to this common support by at least one optical fiber.

Abstract: The present invention relates to a backlighting device, having several brightness levels, for a transmission display screen (12). The device comprises light sources placed in a case (14) between a translucent front wall formed by a diffuser screen (20) and a rear wall (24). The light sources, selected according to the desired brightness level, are mosaics (24, 28) of light-emitting diodes (26, 30) that are placed immediately behind the diffuser screen with, for the highest brightness level, a first mosaic (24) of light-emitting diodes that provides daytime illumination and with, for the lowest brightness level, a second mosaic (28) of light sources that supplies night-time illumination.

Abstract: The present invention relates to a fabrication method of nitride-based semiconductors and a nitride-based semiconductor fabricated thereby. In the fabrication method of the invention, a self-organizing metal layer is formed on a sapphire substrate. The sapphire substrate having the self-organizing metal layer is heated so that self-organizing metal coalesces into nanoscale clusters to irregularly expose an upper surface of the sapphire substrate. Exposed portions of the sapphire substrate is plasma etched using the self-organized metal clusters as a mask to form a nanoscale uneven structure on the sapphire substrate. A resultant structure is wet etched to remove the self-organized metal clusters. The nanoscale uneven structure formed on the sapphire substrate decreases the stress and resultant dislocation between the sapphire substrate and a nitride-based semiconductor layer as well as increases the quantum efficiency between the same.

Abstract: An improved back light module that the special design of light guide plate can prevent from the non-uniform of illumination. The module includes a light source; a reflector below the light source to reflect back the downward light rays for increasing the illumination of the back light module; and a light guide plate above said light source that a first portion of the bottom surface of said light guide plate, which is over said light source, is a plane and a second portion of the bottom/top surface of said light guide plate, which is not over said light source, has a plurality of regular bumps/recesses for focusing the light rays to increase the illumination, wherein said first portion and said second portion are arranged alternately in order.

Abstract: An outer enclosure case according to the present invention is substantially flat and rectangular in appearance and accommodates an inner hard-disk-drive case that contains a hard disk and a drive unit and the like for driving the hard disk. The outer enclosure case includes a box-like case body that has an open bottom portion; a cover that mounts over the open bottom portion; acoustic material of a prescribed thickness lining the inner peripheral surfaces of the enclosure case body; a heat-dissipating plate disposed on the inside of the top panel of the enclosure case body; and support members that extend from the heat-dissipating plate inside the enclosure case body so as to support the inner hard-disk-drive case between them. The enclosure case cover, the enclosure case body, the heat-dissipating plate, and the support members are constituted of aluminum or an aluminum alloy and are disposed in contact with the inner hard-disk-drive case in such a way as to dissipate heat.

Abstract: A fastening clip has an annular portion and two legs extending therefrom, each leg having a locking element. Two identical clips can be fastened together with the locking elements securing against separation. The clips can be used to fasten a panel to opposite walls of an accommodating member by inserting the clips from opposite sides in aligned through bores formed in the panel and the opposite walls, and pushing the clips toward each other until the locking elements engage. The annular portions of the clips have shoulders engaging the panel, while the legs have resilient projections engaging a surface of the through bore of the panel. The legs of each clip are barb-shaped and have distal ends snuggly fitted in spaces formed in the annular portion between the legs of the other clip.

Abstract: Disclosed are a film bulk acoustic resonator (FBAR) device and a method for fabricating the film bulk acoustic resonator (FBAR) device. The film bulk acoustic resonator (FBAR) device comprises a membrane layer having a plurality of active regions and provides different resonant frequencies by providing different thicknesses of the active regions of series resonators and shunt resonators, and by controlling the thicknesses, respectively. A plurality of the film bulk acoustic resonator (FBAR) devices having different resonant frequencies are manufactured on a substrate, thereby simultaneously manufacturing a transmission filter and a reception filter on the same substrate. Further, the film bulk acoustic resonator (FBAR) device has a stable structure and excellent characteristics.

Abstract: A method of fabricating a chip scale package includes: preparing a wafer including a plurality of chips; forming an insulating layer on the upper surface of the wafer except in areas of two upper terminals of each chip; forming an upper conductive layer on the insulating layer so as to be connected to the upper terminals of the chips; forming a lower conductive layer on the lower surface of the wafer so as to be connected to a lower terminals of each chip; first dicing the wafer so that one side of the chip scale package is formed; forming electrode surfaces on side surfaces of the upper and the lower conductive layers which are defined by the side of the chip scale package formed in the first dicing step; dividing the upper conductive layer of each chip into two areas each connected to one of the two upper terminals; and second dicing the wafer into package units.

Abstract: A plasma in a vacuum chamber where a workpiece is processed is bounded by a plasma confinement volume including a region between a first electrode simultaneously responsive to power at first and second RF frequencies and a DC grounded second electrode. A DC grounded extension is substantially aligned with the first electrode. A substantial percentage of power at the first frequency is coupled to a path including the first and second electrodes but not the extension while a substantial percentage of power at the second frequency is coupled to a path including the first electrodes and extension, but not the second electrode. Changing the relative powers at the first and second frequencies, as applied to the first electrode, controls DC bias voltage of the first electrode.

Abstract: The image reading device includes a scanning module and a light interference module. The user may use the light interference module to interfere the light path to trigger the scanning processes from a standby mode. When the light path is interfered, the image sensor would generate different image signal output. In this case, by detecting the difference of image signal output pattern, the image reading device would be triggered to load specific scanning control parameters to perform the scanning, such as starting the scanning programs and driving the scanning module to an initial position for completing the scanning.