Abstract: An inventive method for the manufacture of a thin film actuated mirror array comprises the steps of: preparing an active matrix including a substrate, an array of switching devices and an array of connecting terminals; forming a first sacrificial layer including an array of empty cavities; forming an array of actuating structures, each of the actuating structures including an elastic member, a lower electrode, an electrodisplacive member, an upper electrode and a via contact; forming a second sacrificial layer including an array of empty slots; forming an array of mirrors; removing the first and the second sacrificial layer to thereby form the thin film actuated mirror array. The use of a poly-Si as the material for the first and the second sacrificial layers will ensure an easy flattening thereof and an easy removal thereof, resulting an increased otpical efficiency in the thin film actuated mirror thus formed.

Abstract: In a data detection apparatus for use in a magnetic recording/playback system, an A/D converter converts an analog playback signal into digital playback data at a sampling rate in accordance with a previously obtained (i−1)st sampling clock signal (SCSi−1) to provide an ith sample value (Si). An interpolation filter performs interpolation filtering on the Si based on a previously obtained (i−1)st phase error (PE) signal (PEi−1) to provide an ith interpolated sample value (ISi) and an ith hold signal (Hi) under a predetermined hold condition in an asynchronous mode (ASM). An equalization channel (EC) equalizes the ISi by using a partial response 4 method either based on a previously obtained (i−1)st error signal (Ei−1) in a synchronous mode or based on the Ei−1 and a previously obtained (i-1)st hold signal (Hi−1) in ASM to supply an ith equalized sample value (ESi).

Abstract: An apparatus for reproducing program data recorded on an optical disc at a multiple velocity without a deterioration of a screen quality is disclosed. Storing section stores data which relates to rotation and reproduction velocity for normal and multiple velocity reproductions of the optical disc. Maincontroller checks whether or not a reproduction mode signal indicates the multiple velocity reproduction, and outputs rotation and reproduction velocity data signals corresponding to the checked reproduction mode signal. Velocity controller outputs rotation and reproduction velocity control signals and a memory control signal corresponding to the checked reproduction mode signal based on the rotation and reproduction velocity data signals. Rotating section rotates the optical disc at a rotation velocity determined by a present reproduction velocity signal and the rotation velocity control signal.

Abstract: A three-level infra-red bolometer includes an active matrix level, a support level, a pair of posts and an absorption level. The active matrix level includes a substrate having an integrated circuit, a pair of connecting terminals and a protective layer covering the substrate. The support level includes a pair of bridges, each of the bridges being provided with a conduction line formed on top thereof, wherein one end of the conduction line is electrically connected to the respective connecting terminal. The absorption level includes a serpentine bolometer element surrounded by an absorber made of silicon oxide (SiO2) or silicon oxy-nitride (SiOxNy). Each of the posts includes an electrical conduit surrounded by an insulating material and is placed between the absorption level and the bridge, in such a way that the serpentine bolometer element is electrically connected to the integrated circuit through the electrical conduit, the conduction line and the connecting terminal.

Abstract: A infra-red bolometer includes an active matrix level, a support level, a pair of posts and an absorption level. The active matrix level includes a substrate having a pair of connecting terminals. The support level includes a pair of bridges, each of the bridges being provided with a conduction line formed on top thereof, wherein one end of the conduction line is electrically connected to the respective connecting terminal. The absorption level includes an absorber with a reflective layer positioned at bottom surface thereof, a serpentine bolometer element surrounded by the absorber and an IR absorber coating formed top of the absorber. Since the reflective layer is attached at the bottom surface of the absorber, which will, in turn, eliminate the need for controlling the vertical distance between the absorption level and the active matrix level.

Abstract: An apparatus efficiently performs symbol timing recovery of sampled data included in a vestigial sideband (VSB) signal. Each of the sampled data is first filtered to output a positive and a negative band edge filtered components thereof. Thereafter, the negative band edge filtered component is processed to obtain a conjugate complex component; and the positive band edge filtered component is multiplied by the conjugate complex component to provide a multiplied component as symbol timing information. Finally, each of the sampled data is corrected based on the symbol timing information to generate interpolated data thereon as the timing recovered data.

Abstract: In a motion effector for use in a virtual reality system, a plant is a target of control and for producing an output signal reflecting the actual movement of a moving part therein and a reference input provider provides a reference input signal which reflects a desired motion of the plant. In addition, a subtractor produces an error signal by subtracting the output signal from the reference input signal. A feedback compensator generates a first control signal by using the error signal and a feed-forward compensator generates a second control signal by using the reference input signal. An adder generates a final control signal by adding the first and the second control signals and provides the final control signal to the plant, wherein the final control signal is used to control the plant.

Abstract: Disclosed is a timing circuit which produces control signals by which a data interfacing section can simultaneously implement input and output operations of a video data from a frame memory to an address electrode driving section, respectively. A first pulse signal whose pulse duration corresponds to a whole horizontal line time, a second pulse signal which is identical to a delayed first pulse signal by one horizontal line time and a third pulse signal whose pulse duration is one horizontal line time longer than that of the first pulse signal are produced by using a system clock signal of a 2 MHz frequency. During the pulse duration of the first and second pulse signals, first and second clock signals which contains 480 numbers of clock pulses with a period of one horizontal line time are produced by counting another system clock signal of a 25 MHz frequency.

Abstract: A three electrodes face discharge color plasma display panel (PDP) is disclosed. The three electrodes face discharge color PDP comprises a front glass substrate, a back glass substrate, a plurality of partition walls, a plurality of scanning and sustaining electrode lines, a plurality of common sustaining electrode lines, and a plurality of address electrode lines. The plurality of scanning and sustaining electrode lines are formed on the front glass substrate. The common sustaining electrode lines and the adress electrode lines are formed on the back glass substrate. Therefore, the brightness of the whole picture can be enhanced as an intensity of a visible light passing the front substrate increases. Also, a discharge interference occuring between adjacent cells can be minimized as a discharge region of a discharge space is formed up and down.

Abstract: High dielectric constant capacitors are made from a dielectric ink of lead-magnesium-niobate and lead oxide powders. Dielectric inks are made by mixing the dielectric powders with a suitable organic vehicle which can be used to coat one or more glass-based green tapes. Buried capacitors are made by coating an overlying and an underlying green tape with a conductor such as silver. Capacitors can also be made by adjusting the organic vehicle and forming a green tape from the dielectric powders. These dielectric green tapes each can be coated with a conductive layer and stacked, the conductive layers connected in parallel. The resultant multilayer capacitors have a very high dielectric constant, while eliminating the need for very large area capacitors, as compared to single layer capacitors.

Abstract: Disclosed is a timing circuit which produces control signals by which a data interfacing section can simultaneously implement input and output operations of a video data from a frame memory and to an address electrode driving section, respectively. A first pulse signal whose pulse duration corresponds to a whole horizontal line time, a second pulse signal which is identical to a delayed first pulse signal by one horizontal line time and a third pulse signal whose pulse duration is the one horizontal line time longer than that of the first pulse signal are produced by using a system clock signal of 2 MHz. During the pulse duration of the third pulse signal, a first clock signal which contains pulse signals whose numbers are one number larger than the numbers of whole horizontal lines (480) by using a system clock signal of 25 MHz. The first clock signal is provided to the data interfacing section to control the input and output operations thereof.

Abstract: A silicon substrate is disposed parallel with an optical disc. A prism for transmitting an incident beam is installed on the silicon substrate. A diffraction grating on a side surface of the prism. A beam splitter for partially reflecting and partially transmitting the laser beam is positioned inside of the prism to be slanted. The beam irradiated from the laser light source is reflected by the beam splitter after having transmitted through the diffraction grating. The reflected beam focuses onto the optical disc via a selective light-transmitting part formed on the upper surface of the prism. The beam is totally transmitted through an inner circular portion of the selective light-transmitting part and half transmitted through a peripheral portion of the selective light-transmitting part.

Abstract: A volume holographic data storage (VHDS) system incorporates therein a storage device having a plurality of storage media for storing multiple holograms. The VHDS system comprises a light source for generating a coherent light beam, a beam splitter for splitting the coherent light beam into a reference and a signal beams, a storage device having a base and a plurality of storage media mounted on the base for three-dimensionally storing the multiple holograms thereinto, a pair of mirrors for directing the signal and the reference beams to the storage device, respectively, and a motor for rotating the storage device about an axis perpendicular to a plane which includes the signal and reference beams, wherein the axis passes through a center point of the storage device. In the storage device, each of the storage media is mounted on top of the base angularly separated by an angle of &bgr;degrees.

Abstract: A method for patterning a thin film layer into a predetermined configuration improves resolution thereof by exposing a partial depth “d” of a photoresist layer to a light beam. The patterning method includes the steps of: (a) preparing a semiconductor substrate with the thin film layer, an intermediate layer and a photoresist layer formed thereon, successively; (b) exposing a partial depth of the photoresist layer to a light beam; (c) removing the portion of the photoresist layer exposed to the light beam by using a solution to thereby obtain a patterned photoresist layer; (d) etching the intermediate layer by using the patterned photoresist layer as a mask; and (e) patterning the thin film layer into the predetermined configuration by using the etched intermediate layer as a mask.

Abstract: A method for allocating bandwidth to virtual channels by using a bandwidth allocation table in an ATM network, wherein the bandwidth allocation table has a main table divided into a multiplicity of entries and each entry has a plurality of sub-tables, checks a flag of an entry of the main table. If the flag has a first value, an index of a virtual channel recorded at the entry of the main table is read and if the flag has a second value, an entry of a sub-table at which the index of the virtual channel is recorded is detected and the index is read. Thereafter, cells of the virtual channel corresponding to the index are serviced and the above procedure is repeated until cells of a virtual channel corresponding to a last entry of the main table are serviced.

Abstract: A frame synchronization method and apparatus for use in a digital communication system utilizing OFDM method are disclosed. The frame synchronization apparatus comprises a phase calculator for calculating phase values of TPS pilots within a symbol according to in-phase and quadrature-phase channel signals received from a transmitting side; a D-BPSK demodulator for performing D-BPSK demodulation for the phase values of TPS pilots supplied from the phase calculator and outputting the TPS pilots within the demodulated symbol; a control signal generator for comparing the demodulated TPS pilots with each other and outputting a control signal according to the compared result; and frame synchronization unit for confirming a sync word position according to the control signal supplied from the control signal generator and outputting a frame sync signal.

Abstract: Outlets of a contraction/enlargement exhaust nozzle type are formed in an air bubble-generating plate from which fine air bubbles are generated. The outlets are constituted with outer outlets and inner outlets. The outer outlets are formed along edge portions of the air bubble-generating plate and the inner outlets are formed in the inner portions of the air bubble-generating plate. Each of the outlets has a flow-in portion, a contraction portion, and a flow-out portion which are aligned in a coaxial line and have different diameters, so that each of the outlets are formed in a shape of a contraction/enlargement exhaust nozzle type. A diameter of the flow-out portion is smaller than a diameter of the flow-in portion, but larger than a diameter of the contraction portion. A height of the contraction portion is larger than a height of the flow-out portion, but smaller than a height of the flow-in portion.

Abstract: A dual mode converter is provided that may be operated as a variable-frequency, naturally-commutated controller in a Zero-Voltage-Switching mode and as a fixed-off-time controller in a Fixed-Off-Time mode. The converter includes four functional elements. A reference and biases element generates voltage references and biases utilized to determine various signal states. A Timing element generates a fixed off time signal and a voltage ramp signal utilized to create the dual modes of operation. A Catastrophic-Event element detects events that cause the converter output be inhibited and the controller to be restarted. A Mode Detection and Pulse Width Modulation element determines the mode of operation for the converter based on signal inputs from the other functional elements and modulates the output accordingly. In a primary mode, the controller utilizes variable frequency operation to deliver primary power. In a standby mode, the controller utilizes fixed frequency operation to provide low power (less than 5W).

Abstract: An apparatus for L pixel data corresponding to 1 line input from a memory section to an upper and a lower address electrode driving sections, respectively in response to a control signal supplied from a timing control section. The data interfacing apparatus includes upper and lower data interfacing sections, and an input/output control section. The upper and the lower data interfacing sections includes a couple of temporality storing sections including a storing area for temporarily storing L/2 pixel data, an input selecting section for inputting 3N pixel data into the storing area over M (where M is a least integer which is greater than quotient of L divided by 3N) times in response to M input selecting control signals which are sequentially generated, and an output selecting section for outputting the L/2 pixel data stored in the storing area by P units over Q {=(L/2)/P} times in response to Q output selecting control signals which are sequentially generated, respectively.