Abstract: A card receptor for use in an internet set-top box is provided with a pivotable door, a card carrier with card/disk insertion slots to receive and to keep a card/disk therein through the card/disk insertion slots and a driving mechanism. The card carrier moves toward an inside position wherein the card/disk insertion slots stay within a housing of the internet set-top box, with the pivotable door being closed by the driving mechanism, and toward an outside position wherein the card/disk insertion slots stay outside a front panel through an opening of the housing, with the pivotable door being opened by the loading mechanism.

Abstract: An array of M.times.N thin film actuated mirrors for use in an optical projection system comprises an active matrix, an array of M.times.N thin film actuating structures, and an array of M.times.N mirror layers for reflecting light beams, each of the mirror layers further including a first side, a second opposing side and a center portion located therebetween, wherein the first side and the second opposited side of each of the mirror layers are secured on top of the first and second actuating parts of each of the actuating structures, respectively, such that when the first and second actuating parts in each of the actuating structures deform in response to an electrical signal applied between the first and second electrodes, the center portion of the corresponding mirror layer tilts while remaining planar, thereby allowing all of the center portion to reflect the light beams, resulting in an increased optical efficiency.

Abstract: A video cassette recorder includes a driving unit, a pair of pole base assemblies and power conveying unit for conveying a power from the driving unit to the pole base assemblies, the power conveying unit having a pair of link devices for transmitting a power from the driving unit into its corresponding pole base assembly and allowing the pole base assemblies to load a tape. Each of the link devices has a deformable bent portion for exerting a resilient force on the loaded tape.

Abstract: Bit streams transmitted from a coding system through a transmission channel are divided on a block-by-block basis based on bit numbers thereof and a parity bit added to each bit stream is checked to decide whether or not each bit stream is error bit stream having one or more error bits therein. Based on the check result, either each bit stream or a proximate bit stream for each bit stream is selected as an optimum bit stream, wherein the proximate bit stream is generated based on degrees of proximity between masked transform coefficients for each candidate bit stream and masked transform coefficients for each of reference bit streams spatially adjacent to each bit stream.

Abstract: A head base assembly for keeping a video head chip on a head drum assembly is provided with two parallel elastic plates positioned under the rotational drum. A first and a second spacers are closely attached on a bottom and an upper surfaces of the two elastic plates, being separated from each other. By using a fixing thread, the elastic plates and the second spacer are fixed to a rotational drum.

Abstract: A shuttle switch assembly for performing both functions of shuttle and mode is disclosed. The assembly comprises a circuit board. A main base is formed on the circuit board. The main base has a stator protrusively formed at the inner center of the main base and a shuttle axis rotatably formed around the stator. A holder is inserted in the shuttle axis and the holder is provided with a guiding hole having a predetermined length at a side of a periphery of the holder. A dome plate includes a plurality of dome switches on an upper side of the dome plate and the dome plate is installed on the holder; a guiding bracket positioned on an upper portion of the dome plate. The guiding bracket is combined with the holder and is provided with holes which correspond to the dome switches on the dome plate. A shuttle knob is combined with the guiding bracket and is provided with contacting apparatus on a bottom of the shuttle knob.

Abstract: A post-processing method for filtering decoded image signals determines positions of target pixels to be filtered and generates a selection signal indicating whether or not each of the target pixels belongs to a boundary region of a block of decoded image data. In response to the selection signal, each of the target pixel data is selectively filtered through the use of a filtering unit having two filters with different cutoff frequencies. An absolute difference value between filtered and non-filtered target pixel values is compared with a predetermined threshold value.

Abstract: An array of M.times.N electrodisplacive actuators is prepared by:(1) forming a multilayered ceramic structure having M layers of a first conductive metallization and M+1 layers of an electrodisplacive material;(2) obtaining a composite ceramic wafer by slicing the multilayered ceramic structure in a direction normal to the layers of the first conductive metallization;(3) providing a plurality of regularly spaced horizontally directional trenches running parallel to each other wherein each of the trenches is located at an equidistance from two adjacent layers of the first conductive metallization;(4) depositing a second conductive metallization;(5) preparing N-1 regularly spaced vertically directional cuts on the composite ceramic wafer prepared using steps (3) and (4) to thereby obtain the array of M.times.N electrodisplacive actuators.

Abstract: Disclosed is a sub-woofer module which has a simple construction and provides a good low-frequency bass in compliance with an audience's taste. The sub-woofer module has an enclosure, a baffle board which separates the enclosure into first and second chambers, and a speaker coupled to the baffle board. The baffle board is engaged with a screw shaft and moves upward and backward along the screw shaft to vary the volume of the first and second chambers. A reverse-conical cap is disposed above the enclosure to permit the upwardly projected sound to be projected in 360 degrees, and a conical base is disposed below the enclosure to permit the downwardly projected sound to be projected in 360 degrees. The audience can listen to sound of the same quality regardless their position in relation to the sub-woofer module.

Abstract: A 2-position 3-way solenoid valve provided with one plunger and ports arranged in a half portion of the valve in its longitudinal direction is disclosed. The valve includes a valve body having a base with first and second ports and open and closed ends, a housing being hermetically coupled to the base and having a third port, and a cover for closing an end of the housing, the valve body having a chamber therein. The first and second ports are directly communicated with the chamber, and the third port is communicated with the chamber through a flow passage extending to the cover from the housing. A hollow cylindrical sleeve is disposed within the valve body, extending from the housing to the base. A plunger having balls each fixed at both ends thereof is movably disposed within the chamber. On the circumference of the plunger, a plurality of grooves are formed in its longitudinal direction.

Abstract: A self illumination circuit of a hand-held remote control device and self illumination method make it easy to find and operate the remote control device when the remote control device is located in a dark environment. The circuit includes an illuminance sensing section, a contact sensing section, a key sensing section, a control section, a position indicating section, a key illuminating section, and a counter. If the illuminance sensing section senses illuminance of environment and transfers an illuminance sensing signal to the control section, the position indicating section indicates position of the remote control device according a position indicating signal from the control section. Upon receiving signals from the contact sensing section, the key sensing section, and the counter, the control section lights up, twinkles and puts out the key illuminating section.

Abstract: Disclosed is a pulsator for a washing machine capable of preventing generation of a concentric waterflow such as a heart-type waterflow. The pulsator includes a base plate fixed to the shaft housing, a plurality of plate-shaped wings radially fixed to the upper surface of the base plate and for forming a concentric waterflow in the washing water, a plurality of cover plates fixed on the multi-stepped edges of the plurality of plate-shaped wings, a plurality of protrusions radially and in a certain length formed on the upper surface of each of the plurality of cover plates and for generating a waterflow of the washing water vertically oriented toward the top of the washing tub by being rotated according to the rotation of the base plat.

Abstract: There is provided an array of M.times.N thin film actuated mirrors for use in an optical projection system comprising an active matrix, an array of M.times.N thin film actuating structures, each of the thin film actuating structures including at least a thin film layer of a motion-inducing material, a pair of electrodes, each of the electrodes being provided on top and bottom of the thin film motion-inducing layer, an array of M.times.N supporting members, each of the supporting members being used for holding each of the actuating structures in place by cantilevering each of the actuating structures and also for electrically connecting each of the actuating structures and the active matrix, and an array of M.times.N mirrors for reflecting light beams, each of the mirrors being placed on top of each of the actuating structures.

Abstract: Disclosed is a three beam-type projection apparatus in which three projectors can be transported integrally by a single driving motor. A first and a second projecting lenses are formed in the front of first and second projectors, respectively. First and second guiding grooves are formed thereon. The two projectors are connected by a plurality of guiding rods. A third projecting lens is formed in the front of a third projector and an inserting hole is formed on the lower portion of the third projector. A guiding plate is combined with the first, second and third projectors, and is transported forward and backward by a driving apparatus. A fixing plate is provided with a parallel guiding hole formed along the length of the third projector and with an inclined guiding hole for guiding the transportation of the third projector. The three projectors can be transported by a driving motor and the operation of the apparatus is very accurate and advantageous.

Abstract: A pump utilizing a shape memory alloy member which is connected to electric terminals to be contracted by the supply of electric power for lowering a piston, the piston mounted to slidably move within a cylinder to thereby introduce a fluid into the cylinder is raised by a biasing force of a bias spring to externally discharge the fluid introduced in the cylinder. The pump has a simple structure which is light and easily repaired and maintained.

Abstract: Disclosed herein is a washing machine which comprises a bubble generator operable to supply a predetermined amount of air bubbles into the washer tub in a batchwise manner at such a time interval as to allow said amount of air bubbles supplied in a preceding batch to be substantially collapsed before a next supply of said air bubbles commences.