Abstract: A projection television display screen has a plurality of mountings affixed to a cabinet. The plurality of mountings provide rigid screen suspension in a vertical plane while permitting differential lateral movement of the screen relative to the mountings.

Abstract: An improved door structure for a refrigerator capable of increasing usable space of refrigerator by removing an intermediate insulation wall of a refrigerating compartment and of preventing cooled air in the refrigerating compartment from discharging to the outside of the refrigerator by providing a door sealing member which includes a door sealing member hinged to the door so as to prevent a cooled air from discharging to the outside of the system and vertically rotatable in the door opening direction, wherein a cam provided at both sides of the door sealing member and a cam guide provided at a side wall of the refrigerating compartment, so that the door sealing member is rotatable in cooperation with the cam and the cam guide.

Abstract: An apparatus for a digital video tape recorder for detecting a sync signal in digital data includes: a data restoring device for producing serial data and a serial clock signal received from a reproducing head of the digital video tape device; a servo device for producing a head switching pulse and a super-video home system (S-VHS)/video home system (VHS) discriminating signal; an identification detecting device for producing a signal indicative of an end of reading one segment of tracks; and a sync signal detecting device, responsive to each signal produced by the aforementioned devices, for determining correspondence in sync patterns even in a case where not all corresponding bits coincide with one another, for removing erroneously detected sync patterns using a window situated around a position at which a sync signal is produced, and for detecting a sync signal.

Abstract: A deflection yoke assembly for a cathode ray tube includes four substantially equally spaced inclined mounting members arranged about the circumference of a mounting ring at the front of the yoke assembly. Each mounting member has a plunger which positions the yoke with respect to the funnel portion of the cathode ray tube. A continuously unidirectional restricting means prevents the plunger from withdrawing from the funnel portion of the cathode ray tube. A release cylinder, which is coaxial with the sleeve and plunger, releases the unidirectional means, which may be an internally toothed washer, in order to provide capability for readjustment.

Abstract: A portable wireless voice message transmitter over packet switched network for transmitting a voice message is provided. The transmitter is capable of transmitting a voice message and text-based information when a user makes an emergency call to a special address with which the text-based information is associated. The transmitter includes text-based information setting circuit for setting text-based information, a first memory for storing the text-based information, a special address setting circuit for setting a special address which is associated with the text-based information and a second memory for storing the special address.

Abstract: An M-bit digital signal, the most significant bit (MSB) thereof and an integer K are added to produce a sum which is truncated by N least significant bits to provide a symmetrically rounded bit-reduced digital output signal. The MSB may be applied in true or complemented form to the adder for selecting wide or narrow rounding modes having different numbers of output zeros disposed about a point of symmetry for a given input signal change. Advantageously, undesirable direct current (DC) shifts due to least significant bit (LSB) reduction in digital video, audio or similar applications are prevented.

Abstract: A subwindow processing device using variable addressing which does not perform conversion such as storing, backing up and copying directly accessing the data, but processes the generation and movement of a plurality of subwindows by accessing the subwindow data stored in memory according to subwindow variables. Therefore, since the load to the central processing unit and the data bus is reduced, a fast screen processing can be possible, and also, when being applied to a system requiring a fast screen shifting and to a multitasking system in which other functions such as voice data processing and communication data processing are performed along with the screen processing, the system performance can be enhanced.

Abstract: A CCD-defect compensating method for a camcorder is disclosed including the steps of: sequentially delaying input pixel data; operating the values of pixels preceding and behind two stages from an nth pixel, and comparing the operated value with a reference level value to detect the presence or absence of a defect; averaging the pixel data two stages preceding and behind the nth pixel having the defect, to thereby obtain the nth pixel data; deciding the position of the defect to thereby generate a defect compensating control signal; and selectively compensating only for the pixel data averaged in the averaging step or the pixel data having the defect and delayed in the pixel delaying step, and outputting the compensated data with the original (externally input) pixel data.

Abstract: A clock synchronization system for synchronizing a number of paging stations (24) with a system controller (23). Each paging station has a clock that includes a counter (52) that indicates the current local time and which is sequentially incremented by a counter advance signal applied thereto. A voltage controlled oscillator (58) generates the clocking signal that controls the advancement of the counter. A CPU (50) in the system controller monitors the time indicated by the counter and compares it to timing information received from a system clock. The timing information includes a time mark and a time mark send time. The system clock transmits to each paging system the time mark. At a future time, the system clock transmits the time mark send time which is the precise time at which the time mark was transmitted. The paging stations each measure the time interval between the time at which the time mark arrived and the time at which the time mark was transmitted by the system clock period.

Abstract: A fin tube heat exchanger is used in an air conditioner or the like and includes a plurality of plate-shaped fins at regular intervals in parallel with one another through which air flows, a plurality of heat transfer tubes extending through the plate-shaped fins, and a plurality of cutouts formed in the plate-shaped fins to partially surround the heat transfer tubes. A semicircle-shaped flat portion is formed on the center part of a plurality of the cutouts on the windward side and the leeward side. This arrangement makes it possible to improve the heat exchange performance by arranging a plurality of the cutouts compactly.

Abstract: An improved moving elements automatic transferring apparatus for a magnetic recording and reproducing apparatus capable of more simply transferring moving elements such as a reel table, a hub lock release member, and an identification board detection apparatus, which includes two reel tables; a reversibly rotatable pinion disposed between the reel tables; a plate having an elliptical slot, the plate being movable upwardly or downwardly; a rack engaged to a gear portion of the pinion, the rack being linearly movable, and having a hub lock release member disposed at one end thereof; two connection bars each having one end connected to the reel table, and the other end provided with a pin, respectively, of which one connection bar is hinged to the central portion of the pinion and the other connection bar is rigidly connected to the pinion; and spaced-apart two pins provided at ends of the connection bar and inserted into the slot.

Abstract: A microwave oven includes at least two sensors for detecting heat rays emitted from the food which is being heated, a signal processor for obtaining a precise surface temperature of food, irrespective of the deviation of distances between the sensors and food, using output signals from the sensors, and a controller for receiving the output signal of the signal processor to recognize the cooking status of the food and controlling the heating of the food in accordance with the recognized cooking status.

Abstract: A matrix array of an active matrix liquid crystal display (AMLCD) and a manufacturing method thereof by which aperture ratio is enhanced by an optimum structure design of a line of the matrix array and a thin film transistor (TFT) so as to reduce power consumption, increase luminance, and lower reflection, thus improving contrast ratio. Aperture ratio is increased by forming the TFT above the gate line and providing non-linear TFT. The parasitic capacitor, occurring between the gate busline and the drain electrode, can be reduced when a TFT having the same channel length is manufactured due to effect of channel length extension. Therefore, level shifts of the pixel voltage can be reduced so that flicker is reduced and video quality is enhanced.

Abstract: A lamp starting apparatus for a liquid crystal projector is disclosed including a lamp for projecting light to a screen, a lamp starting portion for converting an impedance in starting the lamp, and increasing the energy of a starting pulse applied to the lamp, thereby starting the lamp, a lamp driving portion for driving the lamp, and an inverter for driving the lamp according to a signal output from the lamp driving portion, so that the instant lighting and re-lighting of the lamp are enabled to turn on/off the lamp at any time.

Abstract: An input radio frequency signal to be amplified is fed to the gate terminals of parallel field effect power transistors through impedance matching networks that comprise parallel resistor-capacitor combinations. The capacitor is selected so that it is self-resonant at the frequency of operation, thereby preventing attenuation of the input signal at that frequency. A shunt resistor is coupled between the gates of the parallel transistors to eliminate odd mode oscillations.

Abstract: An improved sensor malfunction prevention apparatus for a microwave oven capable of preventing a malfunction and an infrared ray sensor from being polluted by dusts, food debris or the like from a cooking chamber, which includes a cooling fan; an air duct for guiding cooling air introduced into the interior of the microwave oven in cooperation with the cooling fan; a sensor support bracket disposed at a predetermined inner portion of the air duct; a sensor disposed at a predetermined potion of the sensor support bracket; a protective cover support disposed at the upper portion of the sensor support bracket for defining air openings between the protective cover and the sensor support bracket; and a protective cover fixed to the protective cover support.

Abstract: A stirring apparatus according to the present invention detects a weight of a stirring fluid, such as water or some other fluid, by using a hall sensor. The present invention, a method and apparatus for measuring a weight of a stirring fluid, detects the number of revolutions of a stirring motor, which varies according to the amount of an object fluid, by using a hall sensor to compute a weight of the fluid corresponding to the revolutions.

Abstract: A single-ended input amplifier circuit for use within a magnetic media storage system includes circuits for concurrently biasing and amplifying signals generated by a magnetoresistive element. The amplifier receives power from a single-ended power supply. A first resistor is included for setting the gain of the amplifier and providing an output signal corresponding to the signals generated by the magnetoresistive element. A first feedback circuit generates a first biasing current provided to the magnetoresistive element. The first feedback circuit includes a first transconductance amplifier which amplifies the difference between the output signal and a reference voltage. A second feedback circuit generates a second biasing current provided to the magnetoresistive element. The second feedback circuit includes a second transconductance amplifier which amplifies the difference between the reference voltage and a voltage signal taken from a node between two resistors.

Abstract: A power supply for a raster center controller for a video display appliance which can prevent picture movement phenomena of a cathode ray tube which are caused by unstable power supply to the raster center controller due to the change of the horizontal frequency. The power supply for a raster center controller includes coils, provided in a secondary winding of a flyback transformer, for generating and providing to the raster center controller a pulse voltage having a pulse width corresponding to that of a high voltage developed in the flyback transformer, first and second power supply sections, coupled between the coils and the raster center controller, for providing positive and negative supply voltages to the raster center controller by rectifying and performing charge/discharge operation with respect to the pulse voltage developed in the coils, respectively.