Abstract: An adaptive chord-generating apparatus and method exactly generates chord data specified by a performer by an operation method according to the number of constituent notes of a chord inputted by a performer. To do this, the apparatus and method comprises a keyboard for receiving constituent notes of chord and melody, a memory where a chord search table is stored, a control portion for searching a chord search table of the memory according to a rule corresponding to the number of constituent notes inputted from the keyboard and generating chord data having a chord type and a pitch based on the searched data, and a sound source generator for generating a musical instrument sound signal having a predetermined pitch of chord corresponding to chord data supplied from the control portion.

Abstract: This invention relates to an indirectly-heated cathode heater structure comprising a heat generation section disposed inwardly of an upper portion of a sleeve for generating heat to emit thermions at an electron gun of a cathode ray tube, the heat generation section having a given calorific value being formed to have a length 25.about.33 % of the length of the sleeve, whereby heat loss at a lower portion of the sleeve during heating operation of the heater may be minimized, resulting in improving an overshoot rate of the heater.

Abstract: A choke coil apparatus for an electromagnetic range comprises an improved ferrite core, so as to prevent an increasing in temperature of the choke coil. The ferrite core in a multiangular bar-shape forms a plurality of ventilation spaces between the choke coil and the ferrite core, thereby air-cooling the choke coil by the air flowing in the ventilation space.

Abstract: The present invention provides a method of making a thin film transistor for driving a liquid crystal display comprising the steps of forming a gate electrode on a glass substrate and forming an insulating layer and an amorphous silicon layer in turn on said glass substrate and said gate electrode, and scanning laser beams on the surface of said amorphous silicon layer with the end portions of the respective scanned laser beams being overlapped. According to the method of making a thin film transistor for driving a liquid crystal display of the present invention, a thin film transistor suitable for HDTV, the field effect mobility of which is high, is achieved. Further, in making a thin film transistor, a separate processing step is not required and the number of processing steps can be reduced because constructional features of a TFT are utilized.

Abstract: A memory decoding system for a portable data terminal includes a memory controller, a memory storage, a first selection signal generator, and a second selection signal generator. The memory controller generates address signals and data signals. The memory storage is divided into a plurality of memory regions, and is controlled in such a manner as to write and read for the specified uses through the memory controller. The first selection signal generator outputs memory selecting signals to select one memory type of the memory storage. The second selection signal generator generates memory selecting signals to select another memory type of the memory storage. The portable terminal can be formed into a more compact type.

Abstract: This invention relates to an electron gun for a color picture tube, comprising a focus electrode structure having three electron beam passage apertures including a center aperture of a circular shape and two side apertures each being of an oblong shape having a major axis extending transversely, being arranged such that the center-to-center distance between adjacent apertures of the three apertures is less than the center-to-center distance between adjacent apertures formed in a control electrode and a screen electrode. This focus electrode structure prevents deterioration of resolution of the picture tube due to changes of electron beam paths resulting from thermal deformation of the electrodes during operation of the gun.

Abstract: Automatic head cleaning apparatus and method for checking insensitivity of a VCR video head and for performing a head cleaning operation for a predetermined period. When the insensitivity of the video head is not corrected even after the head cleaning operation for the predetermined period, the VCR tape is ejected. Simultaneously, an alarm notifying a failure of the VCR is activated. A VCR head cleaner is also provided that is in close contact with a VCR drum head due to a magnetic reluctance force during the head cleaning operation. The VCR head cleaner prevents the video head from being subjected to adverse impact and frictional force, and is easily installed requiring no additional space within the VCR. Furthermore, the cleaning operation is automatically completed.

Abstract: A drum reel with a spool brake for balancing the differential rotational velocities of spool and fishline. The spool brake comprises an annular brake drum and a band brake having a pair of arcuate brake parts connected to each other and placed in the brake drum. A brake operating member, having a link engaging part, is placed between the free ends of the brake parts in order to bias the brake parts in opposed directions. A link is provided on one of the frames and engages the brake operating member for rotating this member, and has a slit engaging with the link engaging part such that rotation of the slit causes rotation of the member. A lever is interposed between the frames and hinged to the link such that the lever moves rotating the link and in turn rotating the brake operating member.

Abstract: An automatic input/output terminal varying circuit comprising an input/output terminal section including a plurality of input/output terminals for inputting signals from external signal sources and outputting signals to external systems, an input signal selection section for selecting one of the signals inputted through the input/output terminal section and a television signal in response to select data from a microcomputer and outputting the selected signal to a signal processor, and a plurality of output signal selection section for outputting the selected signal from the input signal selection section to ones of the input/output terminals of the input/output terminal section other than one of the input/output terminals of the input/output terminal section through which the selected signal is inputted, in response to the select data from the microcomputer.

Abstract: The data file recording method and reproducing system record musical performance tune signal in the form of MIDI information and background video signal on CD in order to store a number of playing tune signal. The recording method records on CD video information corresponding to and representing the meaning of the words of sheet music by measures. And the recording method records the musical performance information by measures following the video information, wherein the musical performance information includes a measure of MIDI information for playing a measure of a tune in the sheet music and exclusive information for synchronizing the musical performance information with the video information each for measure.

Abstract: A visible wavelength InGaP/InGaAlP semiconductor laser diode with a double hetero (DH) structure capable of shortening the wavelength having a compound semiconductor substrate of a first conductivity type; a compound semiconductor first clad layer of the first conductivity type formed over the substrate; an undoped compound semiconductor active layer formed over the first clad layer, the lattice constant of the active layer being different from the clad layer to tensile strain the active layer; a compound semiconductor second clad layer of a second conductivity type formed over the active layer, the lattice constant of the second clad layer is the same as that of the first clad layer; a compound semiconductor current confining layer of the first conductivity type formed over the second clad layer except for a central region such that current in the central region flows parallel to the growth direction; a compound semiconductor cap layer of the second conductivity type formed over the current confining layer;

Abstract: An internal fishline type fishing rod having a fishline guider. The fishing rod includes a hollow fishing rod body having a longitudinal opening. A guider support member is tightly received about the rod body such that it is placed about the opening. This support member has a recessed flat section of which the opposed sides are provided with guide rails. A fishline guider body, having a slant fishline guide hole and being provided with a pair of ceramic guide rings on opposed ends of the guide hole, is engaged with the support member. Opposed guide slots of the guider body are inserted into the guide rails of the support member such that the slant fishline guide hole is received in the hollow rod body through the opening of the rod body. A fixture is tightly received about the rod body such that it blocks the guider body insert end of the support member, so that it prevents the guider body from separation from the support member.

Abstract: A method for connection of a bell tube to a distal end of an internal fishline type fishing rod. The bell tube and the distal pipe member of the fishing rod are integrated into a single body during production of the distal pipe member, thus to increase the connection force between them. The material for the distal pipe member is wound about a pipe production mandrel such that a distal end of the mandrel remains bare. The bare distal end of the mandrel is inserted into the small diameter section of the bell tube having at least one annular groove thereabout such that ends of both the bell tube and the pipe member come into intimate contact with each other about the mandrel. Connection material, the same material as that of the pipe member, is wound about the bell tube and the pipe member simultaneously such that the connection material fills the annular grooves of the bell tube.

Abstract: There is disclosed a cleaner head having a detachable mop, which can perform simuiltaneously both of dust sucking and floor mopping functions, thereby resulting in enhanced efficiency of cleaning and shortening of cleaning hours. The cleaner head according to the present invention comprises a lower cover moved closely to form a head body; a plurality of rollers mounted on the bottom of the lower cover to permit the head body to be moved freely in any direction; mop holding means for detachably holding the mop behind a dust sucking area; and locking means for locking the mop holding means.

Abstract: An improved chrominance signal playback system and method for a video cassette recorder are disclosed. A radio frequency of composite video signal detected by a video head is applied to a low-pass filter which filters the composite video signal and outputs a low frequency of chrominance signal. The chrominance signal from the low-pass filter is automatically gain-controlled and is demodulated. The demodulated chrominance signal is applied to a color killer circuit. Also, an envelope detector detects an envelope signal from the chrominance signal from the low-pass filter. In response to the envelope signal, an attenuator attenuates the level of the chrominance signal from the color killer circuit. This results in the suppression of white noise in the chrominance signal. Therefore, the signal-to-noise ratio and the accompanying image quality can be enhanced.

Abstract: A cooking state displaying apparatus and method for a microwave oven combined with a television. The apparatus includes a body sensor for sensing if there is a person near the microwave oven, and in accordance with the sensed output from the body sensor during cooking, selectively displays the current cooking state and completion on an LED displayer installed on the front side of the microwave oven or on a TV screen. Also, in accordance with the sensed output from the body sensor, a cavity lamp in the microwave oven is selectively turned on/off and the loudness of a buzzer sound for indicating completion of cooking varies. Therefore, it is convenient to use and it is possible to save power consumption.

Abstract: A pipe cutter includes a hollow head portion having a first and second ends and a passage way is formed along a longitudinal axis thereof. A jaw element is formed on the first end of the head portion thereby defining a mouth for receiving a pipe to be cut. A blade means has a blade received therein, the blade slidably engaged in the passage way of the head portion. Two handles, each has two ends, one end thereof pivoted to the head portion. A transmission means has first and second ends, the first end pivoted to the blade means and the second ends pivoted to the handles, such that the transmission means converts pivotal movements of the handles into linear movement of the blade means.

Abstract: An object tracking apparatus for a camcorder which automatically controls the photographing direction in the camcorder according to the movement of the object so that the camcorder can automatically track and photograph the object. The object tracking apparatus for a camcorder comprises supporting means for supporting the camcorder to be panned right and left, a motor for supplying a power such that the supporting device rotates the camcorder right and left, a motor driver for driving a motor, at least a pair of photosensitive means mounted on the front surface of camcorder for detecting the left and right movements of the object, and a comparing means for controlling the motor driver according to the change of the output signals of the photosensitive means.

Abstract: A dust collector for collecting dust in a cathode ray tube includes collecting parts which form a collecting space for collecting dust in the cathode ray tube. One of the collecting parts is formed by a retainer for retaining the collecting parts in the cathode ray tube. The dust collector improves the internal voltage characteristics of the CRT and the picture quality.