Abstract: A dubbing control apparatus which can perform dubbing between a video camera and a fixed video cassette recorder (VCR) with the video camera and the fixed VCR being detachably connected with each other. The apparatus includes connectors, installed on the video camera and the fixed VCR, respectively, for being in contact with each other, the connectors interfacing with a power supply, video and audio signals reproduced/recorded by the video camera and the fixed VCR, and other signals during dubbing, and switching elements for selecting dubbing conditions from the video camera to the fixed VCR and vice versa.

Abstract: A phase control apparatus for a video cassette recorder comprising a control head for reproducing a control signal recorded on a control track of a tape, a control signal amplification circuit for amplifying the reproduced control signal at a varied amplification gain, a control signal wave-shaping circuit for wave-shaping an output signal from the control signal amplification circuit and stabilizing the wave-shaped signal, an amplification gain control circuit for controlling the amplification gain of the control signal amplification circuit in response to an output signal from the control signal wave-shaping circuit, a phase control circuit for detecting an phase error and a rotation speed of a capstan motor in response to the output signal from the control signal wave-shaping circuit and an output frequency from the capstan motor and outputting phase and speed detect signals in accordance with the detected results, and a capstan motor driving circuit for driving the capstan motor in response to the phase a

Abstract: An electron gun for a color cathode ray tube contains a cathode, first grid, second grid and third grids, sequentially disposed between the cathode and a screen, and wherein the vertical length of electron beam passing hole formed on the first and third grids is longer than the horizontal length thereof and the vertical length of an electron beam passing hole formed on the second grid is shorter than the horizontal length thereof.

Abstract: An apparatus and a method of compressing and expanding a video signal. The apparatus includes a variable length coder controller and a quantizer. The coder controller compares a bit amount generated in the use of an optimum symbol with that in the use of an existing symbol upon detection of a scene change and outputs a new symbol upon the presence of a gain in accordance with the compared result. A frame delay delays input image data in a unit frame, a subtracter for subtracting an output signal of the frame delay from the input image data, and a scene change detector for detecting a scene change of the input image data. A motion detector detects a motion in the input image data, a main codebook for forming variable sub-codebooks for a still picture, a codebook controller for selecting a specified portion of the main codebook and variable sub-codebooks, and a vector formation unit for forming the input image data into a vector.

Abstract: A video correction apparatus for a camcorder comprising a filter for removing a noise component from digital input video data, a mask processor for calculating a difference between a pixel value of the resultant video data from the filter and each of adjacent vertical and horizontal pixel values, taking absolute values of the calculated differences and adding the taken absolute values, to detect edge data for selection of an accurate characteristic point of the video data from the filter, a representative point determination circuit for selecting a maximum value in each motion vector detection region every field in response to the edge data from the mask processor and determining positions of the selected maximum values as representative point data, and a correlation calculator for inputting the edge data from the mask processor and the representative point data from the representative point determination circuit and calculating a correlation of the inputted data in a search region of a desired range.

Abstract: A thin film transistor LCD and a fabricating method therefor.

Abstract: A variable-speed reproducing method for DVCR comprising the steps of: (1) converting a transported signal into a transport stream (TS) signal; (2) storing the converted TS signal as normal play data; (3) detecting trick play data from the converted TS signal; (4) separately recording the trick play data and normal play data formed in the steps 2 and 3; and (5 and 6) if a trick play signal is input, reading and reproducing only the recorded trick play data at a corresponding speed, thereby facilitating trick play by DVCR.

Abstract: A control apparatus of a real time counter for a video cassette recorder. This apparatus comprises a CLOG detection section having an envelope detector, a comparator, and a low-pass filter for detecting a CLOG signal to judge whether a signal exists on the videotape; an ATF detection section having an ATF detector, an analog-to-digital converter, a band comparator, a shift register, and a state detector for detecting an automatic track following signal, an AND gate for performing a logical product between the CLOG signal and the automatic track following signal and an REC instruction; and a counting section having a switch which is for controlling a real time counter using the output, or a control signal of the AND gate. This apparatus accomplishes the accurate control of a counting by using an automatic track following signal as well as the CLOG signal.

Abstract: This invention relates to a method for fabricating a thin film transistor used for LCD which can improve performance and productivity of an element by forming it with atmospheric pressure CVD method including processes for forming a gate electrode having sloped sides on an insulation substrate, forming a gate insulation film, a semiconductor layer and a channel protection layer successively with atmospheric pressure chemical vapor deposition method on all over the insulation substrate, patterning the channel protection layer such that the channel protection layer is to have a narrower pattern width than the pattern width of the gate electrode remaining the channel protection layer only on the semiconductor layer over the gate electrode, forming an impurity injected semiconductor layer for making resistive contact by injecting impurities into the semiconductor layer using the channel protection layer as a mask, and forming source and drain electrodes over the channel protection layer, the impurity injected sem

Abstract: A method for fabricating a liquid crystal display device comprising the steps of forming a patterning layer to be patterned on the a substrate; forming a protective layer on the patterning layer, the protective layer being provided to prevent the occurrence of a poor pattern; depositing a photoresist layer on the protective layer; patterning the photoresist layer to form a patterned photoresist layer; sequentially removing the protective layer and the patterning layer using the patterned photoresist layer as an etching mask; and removing the patterned photoresist layer. The method facilitates the formation of a smooth passivation layer surface since there is no step between the drain and pixel electrodes. As a result, constant brightness and high contrast can be obtained from a TFT-LCD device which is fabricated by the method of the present invention.

Abstract: In a signal processing method to compress digital audio data by a block floating process, digital signal encoding/decoding apparatuses prevent deterioration of sound quality of the digital audio signal and improve the compression ratio of the digital audio signal when the digital audio signal is converted on a frequency axis per predetermined time frame, and data on the frequency axis is then divided into a plurality of blocks to be recorded, otherwise, bits are allocated per block to compress the digital audio signal for minimizing transmitted parameters. Also, encoding/decoding methods are provided to enable highly efficient encoding/decoding without recording or transmitting word length, allowing one to obtain a high-quality audio signal by allocating bits conventionally held by the word length to hold quantization data of a spectrum signal.

Abstract: An indirect cathode sleeve and manufacturing method thereof capable of substantially reducing electric power consumption of a heater disposed inside the cathode sleeve and simultaneously reducing a picture-producing time by oxidizing an inside surface of the cathode sleeve and reducing an outside surface thereof. The cathode sleeve includes a heater disposed inside the cathode sleeve; a base metal formed at the top of the cathode sleeve; an electron-emitting material layer formed at the outside surface of the base metal; and an indirect cathode sleeve including a black inside surface and a white outside surface.

Abstract: A recording and playback apparatus for a digital video cassette recorder is provided with a data conversion unit for recording a compressed video signal in a more compressed format on a digital recording medium and a data inverse recording unit for playing out the recorded video signal. The data conversion unit includes a controller, encoder and multiplexer. The controller has for its inputs ID information decoded from the compressed video data signal by a decoder and a recording signal instructing the recording of the compressed video signal on a recording medium. At the start of picture recording the controller provides a selection signal to a multiplexer and a decoding instruction to an encoder to enable the encoder to recode the entire picture region of the decoded video data in an intraframe manner with a header which contains the decoding instruction information. The data inverse conversion unit includes a header decoder, a buffer controller, and a buffer.

Abstract: An apparatus and a method of controlling tracking in slow mode playback. The tracking control apparatus comprises a video head for detecting a video signal recorded on a magnetic tape, a video signal processing circuit for detecting envelopes of the detected video signal from the video head, a microcomputer for outputting servo data and a slow tracking signal in response to the detected envelopes from the video signal processing circuit, a servo device for outputting a capstan phase control signal in response to the servo data from the microcomputer, and a capstan motor for driving a capstan in response to a signal into which the capstan phase control signal from the servo device and the slow tracking signal from the microcomputer are combined.

Abstract: An apparatus for automatically performing channel change of a television receiver using a video cassette recorder includes a playback command detector for detecting a playback command, a channel sensor for sensing a video viewable channel which is selected by a radio frequency changeover switch according to a user's selection, a memory for storing the video viewable channel sensed by the channel sensor, television receiver channel change data and television receiver codes corresponding to different types of the television receiver, a controller for reading one of the television receiver channel change data stored in the memory corresponding to the video viewable channel sensed by the channel sensor upon the detection of the playback command by the playback command detector, and a remote transmitter for remotely transmitting the television receiver channel change data from the controller to the television receiver to change a current channel of the television receiver to the video viewable channel sensed by th

Abstract: Disclosed is a liquid crystal display device comprising a substrate; a plurality of pixel electrodes arranged in matrix; a plurality of data bus lines, each of the data bus lines being arranged between two adjacent pixel electrodes in row direction; a plurality of gate bus lines spaced from each other, each of the gate bus lines being arranged between two adjacent pixel electrodes in column direction and being intersected with each of the data bus line; and a plurality of thin film transistors arranged in matrix on the substrate, wherein each of the thin film transistors has a gate electrode formed on the substrate to be connected to the gate bus line, a source electrode extended from one part of the gate bus line up to a crossing portion of the data and gate bus lines to be connected to the data bus line, and a drain electrode extended from the other part of the gate electrode to the pixel electrode, and is arranged corresponding to each of the pixel electrodes.

Abstract: This invention relates to a device and method for multi-processing EVR adjustment where in an electric volume register adjustment device includes: a plurality of operation mode means having exclusive adjustment conditions from each other, a plurality of switches causing adjustment for the plurality of operation mode means, a control means for controlling system according to the operation of the plurality of switches, an adjustment voltage application means forapplying voltage required for an adjustment to the plurality of operation mode means according to the control of the control means, and, a memory for storing the adjustment data which will be applied to the plurality of operation mode means according to the control of the control means and a method for multi-processing electric volume register adjustment includes steps of adjustment operation mode selection for selecting one operation mode from a plurality of operation modes having exclusive adjustment conditions from each other in an adjustment mode adj

Abstract: The present invention is related to a method for manufacturing a thin film transistor which can improve the yield, characteristics and reliability of the thin film transistor by selectively forming a semiconductor layer on a desired portion using a of a substrate using a temperature difference of the surface of a substrate achieve by heating the substrate with a lamp. The method comprises the steps of forming a black matrix layer of metal on a portion of the whole surface of an insulating glass substrate, forming an insulating layer for protecting the substrate on the whole substrate including the black matrix layer, forming source/drain electrodes on the insulating layer over the black matrix, selectively forming a semiconductor layer on the insulating layer including the source/drain electrodes, forming a gate insulating layer and forming a gate electrode.

Abstract: A two-picture video recording/reproducing apparatus and method automatically edits & records a video signal from an 8 mm video recorder/reproducer onto a VHS video recorder/reproducer, monitors the recording state on a sub-picture, and records an externally input signal by the video recorder/reproducer to monitor it on the sub-picture while watching a TV broadcast signal on a main picture.

Abstract: An inverse quantizing device includes memories which are addressed by input quantized coefficients and quantization levels and store resultant data of inverse quantization in groups such as intra DC, intra AC and non-intra. A control section discriminates the group of an input data to be inverse-quantized according to input block-type and block-strobe signals, selects one of the memories according to the discriminated result, and controls the selected memory to output the resultant data of inverse quantization stored therein. According to the device, real time processing of the input data is achieved with its simplified construction.