Abstract: A circuit for controlling a speed and a phase of a VCR servo system includes a Control (CTL) signal generation section, a speed error detection section, a phase error detection section and a speed/phase control section. The phase error detection section has a recording phase error detector and a playback phase error detector. A CTL signal blank discrimination section inputs a CTL pulse from the playback phase error detector, discriminates a blank interval of a CTL signal based on the inputted CTL pulse, and outputs discrimination signal in accordance with the discriminated result. A first switching control section inputs the discrimination signal, an FF/REW mode signal, a recording mode signal and a tape type discriminating signal and performs a logical operation based on the inputted signals to output a first control signal.

Abstract: A point type remote control apparatus and method thereof, which can directly move a point to a desired position on a display screen, and thereby select quickly from a menu and provide convenience in use. The present invention comprises a signal transmitter for transmitting a specified pulse signal towards the desired point on the display screen, and a receiver/controller having a plurality of signal receiving sensors positioned around the display screen. The receiver/controller calculates a positional coordinate of a point of the transmitter by converting the intensity differences of the pulse signals received by the signal receiving sensors into phase differences, and displays the point corresponding to the positional coordinate on the display screen. In addition, the present invention comprises a receiver/controller for counting real phase differences of each pulse signal received by the signal receiving sensors.

Abstract: An apparatus for controlling a buffer adapted to transmit motion-involving video compressed by use of an intraframe compression coding technique employing discrete cosine transform and variable length coding to a constant rate channel, wherein a statistical feed-forward-based buffer control apparatus having a simple construction is combined with an existing statistical feed-back-based buffer control apparatus, thereby being capable of stably controlling a buffer even when a scene change occurs, and reducing the capacity of the buffer and the length of a tape needed.

Abstract: A color cathode ray tube includes a black matrix layer formed on the flat portion of a glass panel, a patterned metal oxide layer formed on the black matrix layer, a fluorescent layer formed on the patterned metal oxide layer and directly on the glass panel therebetween, and a metal reflection layer formed on the fluorescent layer on both the curved and flat portions of the glass panel, wherein the mean particle size of the metal oxide is larger than the mean particle size of the black matrix. The relative particle size of the metal oxide and the black matrix provides for increased adhesion of the reflective metal layer, and alleviates problems with out-gassing of the black matrix.

Abstract: A reel table moving device for a video cassette tape recorder includes a mechanism for automatically positioning a pair of reel tables in response to insertion of a predetermined size video cassette without the need for an independent drive motor or sensor. The device includes a pair of protrusions mounted to opposite end portions of a moving member which are adapted to engage the tape cassette being inserted into the inlet port. The moving member moves in response to insertion of the tape cassette into the inlet port. In turn, an actuating member is connected to and moves in response to the movement of the moving member for causing the reel tables to move to a desired position for receiving a predetermined size tape cassette.

Abstract: A spray arm of a dish washer having improved washing efficiency by providing the spray arm to pulsate through utilizing the feeding and draining action of washing water, comprises first and second rotation nozzles oppositely formed in each end of the spray arm; a ball moved by washing water fed into the spray arm and the weight of the ball itself, the ball for closing either one of the first and the second nozzles, and a guide member for guiding the ball to move only in one direction.

Abstract: An improved flange-back adjustment method for a video camera capable of advantageously reducing the time needed for adjusting the flange-back and capable of correctly performing the flange-back adjustment is disclosed. The method includes determining a value of a first position on an actual trace curve, determining a value of a second position on the actual trace curve, calculating a difference between the first position value and the second position value, determining two corresponding points on a stored trace curve based on the calculated difference, and determining flange-back values based on these determinations.

Abstract: A method of correcting errors in a digital VCR in which the error correcting capability is maximized and probabilities that no error is detected and data decoding fails are minimized, by using a relatively small length of redundancy. The method comprises the first step of detecting errors from vertical and horizontal sections of a code of data played back from a tape and setting cross-points of the detected errors to flags, the second step of detecting errors from the horizontal code sections of the played back data, correcting the detected errors and erasing only the errors positioned at the cross-points set to the flags at the first steep, in ones of the horizontal code sections from which detectable but non-correctable errors are detected, and the third step of correcting the errors erased at the second in a vertical direction.

Abstract: A magnetic recording and reproducing apparatus with game pack driver having improved loading features. The apparatus includes a cartridge cover pivotally connected to the front panel of a main body of the apparatus which enables a game pack to be loaded even if only the front panel is exposed. In another embodiment, a block door having a game pack socket is placed in the front panel such that the block door can be linearly moved forward and backward relative to the front panel. In still another embodiment, a game pack receiving door is pivoted to the front panel, while a game pack socket is separately provided in the interior of the main body. The apparatus of the invention thus allows a game pack be loaded in the game pack driver at the front of the apparatus. The apparatus also allow a user to insert the game pack into the socket while view in the socket, thus to facilitate loading of the game pack.

Abstract: This invention relates to a laser irradiation device of laser printers in which has a simplified laser diode excitation control device, comprising a laser beam emitter, a first lens for converting the laser beam emitted from the laser beam emitter into parallel laser beam, a polygonal mirror for reflecting the parallel laser beam, the polygonal mirror being rotated and having a plurality of reflection surfaces and sensing part, the sensing part sensing the starting points of each reflection surfaces, a second lens for receiving the laser beam reflected by the polygonal mL-Tor, and a controller for synthesizing an output signal from the sensing part of the polygonal mirror with a picture signal and generating control signal to control the laser beam emitter.

Abstract: A thin film transistor and a method of making the same, capable of reducing the step height between an insulating substrate and a gate electrode upon the anodization and thus preventing a short circuit at overlapping portions of the gate electrode and source/drain electrodes. The thin film transistor comprises a first metal layer as a gate electrode formed on an insulating substrate, an anodizable second metal layer having a line width larger than that of the first metal layer so as to cover the first metal layer, and an anodized film as a first gate insulating film formed by anodizing the second metal layer. The gate electrode and the anodized film serve as a gate insulating film.

Abstract: A method of sorting out candidate characters in a character recognition system comprising a character characteristic extracting step of extracting characteristics of characters on the basis of run-length information of the characters, a character distribution extracting step of determining position information of the characters on the basis of the extracted characteristics of the characters, a character classification reference data storing step of storing the determined position information of the characters as character classification reference data in storage means, and a candidate character sorting-out step of adopting the characters belonging to a particular one of the position information stored in the storage means corresponding to a characteristic of an input character to be recognized, as the candidate characters for the input character.

Abstract: A method of cleaving a semiconductor wafer is disclosed which includes coating a first photoresist on a front surface of a semiconductor wafer having a plurality of semiconductor laser elements formed on the semiconductor wafer, patterning the first photoresist so as to form guide mark patterns for cleaving, coating a second photoresist on a rear surface of the semiconductor wafer, removing an edge part located at the guide mark patterns for cleaving of the second photoresist, etching through the semiconductor wafer to form guide marks using the patterned first and second photoresists as masks, patterning the second photoresist to form stripe patterns in the rear surface, etching the rear surface of the semiconductor wafer so as to form V-shaped or dovetail shaped grooves, removing the first photoresist and the second photoresist, and cleaving the semiconductor wafer along the V-shaped or dovetail shaped grooves into bars, each bar being a semiconductor laser.

Abstract: A method and device for automatic time setting utilizing broadcasting signal which can set the present time automatically utilizing broadcasting signals of teletext and video program system. The automatic time setting device includes a tuner and demodulation means for synchronizing, receiving and demodulating broadcasting signals, a data slicer for slicing teletext data in package units of the data received from the tuner and demodulation means, a teletext processor for converting the teletext data received from the data slicer into character data, and a first microcomputer for controlling the teletext processor and setting the present time with the character data received from the teletext processor.

Abstract: An electron gun for a color cathode-ray tube reducing the spherical aberration and the flying spot aberration, thus improving the resolution of the color cathode-ray tube. The electron gun comprises a pair of accelerating/focusing electrodes coaxial with the tube and providing a passage for the electron beams. The electrodes are spaced apart from each other by a predetermined distance and has individual common openings, and each includes an envelop having a rim adjacent a corresponding common opening, the rim surrounding the plurality of electron beams and defining the common opening, and a control electrode plate being placed in the envelop and recessed from the rim by a predetermined distance in the axial direction in order for controlling the plurality of electron beams. Each electrode plate has a center opening and a pair of opposed outer openings. The center opening may be a rectangular opening or rounded at its upper and lower ends.

Abstract: This invention is related to a sensor for detecting food temperature, which can control cooking more precisely by detecting change of food temperature utilizing the heat absorption rate difference of black bodies and non-black bodies to permit cooking control when cooking below boiling point, such as thawing or warming up.

Abstract: A sensorless SRM suitable to drive the SRM based on the position of a rotor detected through the detection of the variation of the current of each phase without providing separate sensors for identifying the position of the rotor includes a motor driving part for driving the motor by exciting phases of the motor in a predetermined sequence, a differentiating part for differentiating the currents exciting the phases of the motor respectively, an amplifying part for amplifying output voltages from the differentiating part to proper levels, and a comparing part for comparing output voltages of the amplifying part with reference voltages respectively to generate a high level signal when the output voltage of the amplifying part is higher than the reference voltage and a low level signal when the output voltage of the amplifying part is lower than the reference voltage.

Abstract: An online handwritten character recognizing system and method thereof, is provided which includes a feature extracting section for providing a Fourier transformation of the coordinate points of the character strokes that have been inputted through a tablet input/output section and normalized for distance and time by a preprocessing section. The Fourier coefficient is provided by converting a coordinate function expressing the time between inputted points into a frequency function. The recognizing system also includes a character recognizing section for dividing the Fourier coefficient provided by the feature extracting section into an imaginary part and a real part and multiplying a weight to the imaginary part and the real part and thereafter recognizing this as a character by utilizing perceptron, so that complicated Hangul (Korean alphabet) and English characters can be rapidly and precisely recognized.

Abstract: An apparatus and method for controlling recording and reproduction in a video cassette tape recorder are disclosed apparatus is capable of, in a recording mode, separating specific data for speed-varied reproduction from compressed digital video signals, recording them on designated tracks, recording position information of the designated tracks on a control track by an index head or recording position information of recording position-synchronized blocks at the starting portions of the designated tracks recorded with the specific data, and in a speed-varied reproduction mode, controlling a capstan servo speed so as to maintain the travel of a magnetic tape at a normal speed and periodically or non-periodically accelerate or decelerate it where specific data for varied-speed have been recorded periodically or non-periodically on predetermined portions of tracks, thereby making heads travel repeatedly at the normal speed and the high speed and thereby detect continuously the specific tracks for varied-speed.

Abstract: This invention relates to a cool air supply apparatus for maintaining a homogeneity of cool air distribution in a cold-storage room includes a cool air guiding part for guiding cool air generated from a compressor to the cold-storage room and a cool air spouting part (104, 107, 109) having multiple spouting holes (104' and 109') for spouting the cool air supplied from the cool air guiding part from the walls and door of the cold-storage room.