Abstract: An improved monaural signal judgement circuit which is capable of judging whether or not an input signal is monaural when signals from a television, a video cassette tape recorder, an audio cassette tape recorder, a compact disc player, or the like are inputted to the monaural signal judgement circuit and of converting the process into a pseudo stereo function when the input signal is monaural, which includes a wave form shaping circuit for separately wave-form-shaping a left-side signal and a right-side signal inputted thereto; an operation circuit for computing a signal level difference of the wave-form-shaped right-side and left-side signals; a control signal setting circuit for setting a control signal in accordance with an output of the operation circuit; an input control circuit connected between an input side of the operation circuit and an output side of the control signal setting circuit for adjusting a signal level at an input side of the operation circuit in accordance with a control signal applied

Abstract: An index processor and processing method for digital VCR including the steps of: normally recording a user-selected program on video tape in a general recording mode; recording an index input after the program is recorded in an index recording mode, succeeding the end of a final program; normally reproducing a program recorded on video tape in a general playback mode; and reproducing the user-selected program according to the index recorded on video tape in the index reproducing mode, and recording a modified index.

Abstract: This invention relates to an encoder key input device in which the number of ports of microcomputer for encoder circuit having key matrix input and encoder key input in common includes a microcomputer for generating first and second scanning signal, a key matrix circuit for outputting the key signal scanned by the first scanning signal generated from the microcomputer to the microcomputer, and an encoder circuit for outputting the encoder signal scanned by the second scanning signal to the microcomputer via key matrix circuit.

Abstract: A method and apparatus for testing hearing aids under condition of actual use where a microprocessor is programmed to generate a warbled pure tone and analyses of the signal as processed by the device. The generated signal and a amplified signal by the hearing aid are analyzed by use of a digital Fourier transform (DFT) to arrive at the transfer function of the device in an setting approximating the environment of use and independent of extrinsic noise.

Abstract: An improved exhaustion noise suppressing apparatus for a hermetic compressor directed to minimizing vibration of a refrigerator cycle pipe mechanism caused by a pressure difference of an exhausting gas pressure of the exhausting gas which is discharged from the system to the outside of the compressor by providing a damping member for offsetting a pressure wave form of the refrigerant gas to one side of the interior of the exhaustion noise suppressing unit wherein the compressed refrigerant gas discharged from the cylinder and the exhausting chamber is introduced into the loop pipe through the head cover and the exhaustion noise suppressing unit.

Abstract: A liquid crystal display device includes a substrate, a thin film transistor including a gate line, a source electrode, and a drain electrode formed on the substrate, a first protective layer formed on the thin film transistor, a black matrix pattern formed on the first protective layer, a second protective layer covering the black matrix pattern, and a pixel electrode connected to the drain electrode of the thin film transistor, wherein the first protective layer is selectively removed using the black matrix pattern as a mask to expose the pixel electrode, and wherein the second protective layer is formed using a shadow mask.

Abstract: An active matrix liquid crystal display comprising a plurality of address buses substantially parallel to one another, a plurality of data buses substantially perpendicular to the address buses, and a plurality of picture elements arranged in a matrix. Each picture element is surrounded by at least one common address bus and two adjacent data buses and includes at least two display electrodes separated from one another; a first switching transistor coupled between a first one of the adjacent data buses, the common address bus, and a first one of the display electrodes; a second switching transistor coupled between a second one of the adjacent data buses, the common address bus, and a second one of the display electrodes; a first capacitor coupled between the first data bus and the second display electrode; and a second capacitor coupled between the second data bus and the first display electrode.

Abstract: A method for fabricating the polycrystal silicon TFT under a low temperature which has an improved electron mobility, comprises the steps of forming an oxide film on a substrate, depositing a polycrystal silicon on the oxide film and patterning the polycrystal silicon so that source and drain regions and a channel region remain, growing a gate insulating layer on the patterned polycrystal silicon by ECR plasma thermal oxidation, depositing a material for a gate on the whole surface and removing the material and the gate insulating layer in portions except for a gate region to form the gate, and performing ion implantation on the exposed areas of the polycrystal silicon to form the source and drain regions.

Abstract: A packaged semiconductor die includes a heat sink having a locking feature that interlocks with the encapsulant encapsulating the die to minimize or eliminate delamination of the encapsulant from the heat sink. A surface of the heat sink can be exposed to the exterior of the encapsulant. The invention applies broadly to packaged integrated circuits including multichip modules and hybrid circuits, as well as to packaged transistors. In one embodiment of the invention, a locking moat has a cross-sectional shape that has, at a first distance beneath a locking surface of the heat sink, a width that is larger than a width at a second distance beneath the locking surface, the second distance being smaller than the first distance. The locking moat can have, for example, a "keyhole" cross-sectional shape or a circular cross-sectional shape. The locking moat can be formed by, for example, stamping or chemical etching. In another embodiment of the invention, the locking feature is a locking region.

Abstract: A removable form is positioned within a boat hull and may be removed to optionally install a sonar transducer and a method of optionally positioning a sonar transducer within a boat hull after the hull is fabricated. The removable form is defined by a distal end and an opposing proximal end. The proximal end includes a retaining flange extending beyond a nominal thickness of a portion of the hull for anchoring the removable form within the boat hull. The distal end is substantially flush with the outer surface of the hull. The removable form is temporarily adhered to a boat mold and the hull is formed therearound. When the hull is hardened, it is removed from the mold with the removable form secured therein. The hull is operative in this condition, or the removable form may be removed and a sonar transducer may be positioned in its place.

Abstract: A frame structure which can reduce the howling phenomena generated by the vibration of computer monitors or television sets. The frame structure is mounted within a cathode-ray tube and has a hollow rectangular shape within which a shadow mask can be inserted and fixed. Each corner of the frame is formed with a recessed step to increase the stiffness of the frame.

Abstract: Apparatus for selecting predetermined ones of packets of signal components, from a signal stream of packets includes a control device, responsive to user selection and a transmitted program guide, for determining packet identifier codes, SCID's, for respective program signal components. SCID's, from respective packets in the signal stream, are successively compared with selected, stored SCID's. Transmitted signal components associated with appropriately detected SCID's are coupled to decryption apparatus. The decryption apparatus selects from a plurality of decryption keys in accordance with decryption flags include in transmitted signal packets. Decryption keys per se are provided by a smart card.

Abstract: In a microwave oven in combination with induction heating cooker, a shielding plate is mounted on a bottom surface of a heating chamber and an induction coil is provided below the shielding plate in order to cut off microwave provided when cooking food by microwave and to transmit a high frequency magnetic field generated in an induction heating cooking, to thereby selectively performing induction heating cooking and microwave cooking. The microwave oven includes a shielding plate having a first metal line part where a plurality of metal lines are parallely arranged at regular intervals and a second metal line part where a plurality of metal lines are also parallely arranged at regular intervals being crossed to the first metal line part at a predetermined angle, and an induction coil being disposed below the shielding plate for generating an induction current when power is supplied.

Abstract: A picture definition apparatus for video display equipment comprising a first filtering circuit for extracting a high-frequency component from an input video signal, an amplifier for amplifying an output signal from the first filtering circuit, a first delay circuit for delaying the input video signal to match it with an output signal from the amplifier, and an adder for adding an output signal from the first delay circuit to the output signal from the amplifier.

Abstract: A heat exchanger structure is disclosed including: a plurality of heat exchange fins stacked at predetermined intervals for enhanced thermal conduction; heat transfer tubes perpendicularly penetrating the heat exchange fins so that coolant conveyed there through is heated or cooled; an intake side in which a plurality of slits are cut and raised from a reference surface of the fin in a central portion between the heat transfer tubes with angled edges so that air is directed to the heat transfer tube; and an outlet side having raised slits whose edges are disposed at a larger angle than the intake side, increasing the velocity of air flow passing through the periphery of the heat transfer tube to enhance heat exchange and thereby prevent the flow from being stagnated at the rear of the heat transfer tube.

Abstract: First and second amplifiers are coupled together to provide complementary output signals at respective output terminals in response to application of operating potentials to first and second supply terminals of each amplifier and application of an input signal to at least the first amplifier. A switching circuit, responsive to a first level of a tri-state control signal supplied thereto, applies the operating potentials individually to the first and second supply terminals of each amplifier and concurrently couples the input signal to the input of the first amplifier and, responsive to a second level of the tri-state control signal, isolates all of the amplifier supply terminals and decouples the input signal. Transient disturbances are minimized by AC coupling the input signal and applying a common mode signal from a common mode source to the AC coupling, to a reference input of each amplifier and to the output terminal of each amplifier.

Abstract: The battery analyzer/conditioner system includes a battery analyzer/conditioner having an input port and an output port. The battery analyzer/conditioner operates to analyze, condition and test a group of rechargeable batteries. A cable is coupled between the input port and a remote control unit to transmit signals between the battery analyzer/conditioner and the remote control unit to enable the remote control unit to control the operation of the battery analyzer/conditioner. Another battery analyzer/conditioner also having an input port and an output port communicates with the battery analyzer/conditioner via a cable coupled between the output port of the battery analyzer/conditioner and the input port of the second battery analyzer/conditioner, wherein the first and second battery analyzer/conditioners are connected in a daisy chain network to permit the remote control unit to communicate selectively with any one of the battery analyzer/conditioner units.

Abstract: A hermetic compressor suction muffler connection assembly is provided to facilitate the connection of a suction muffler to a cylinder head cover by means of transforming a side portion of the cylinder head cover. The cylinder head cover has an insertion recess formed thereof and a plurality of fixing recesses is formed a certain distance from each side of the insertion recess. A clamp has each end portion thereof fixed insertingly in a corresponding one of the plurality of fixing recesses and an extension extended from the clamp is inserted into the insertion recess. A plurality of fasteners connecting the cylinder head cover to a cylinder. A connecting member extended from a suction muffler is inserted into the insertion recess.

Abstract: A leadless chip carrier socket which includes conductive contacts which electrically contact the carrier. The contacts include an outwardly extending cantilevered projection to allow the contacts to be shifted outwardly on downward engaging movement of the top of the socket to allow insertion or removal of the carrier.