Abstract: An impact test system capable of adjusting a sawtooth shock duration is provided. The impact test system includes a base, a test table disposed above the base at a distance from the base and capable of being dropped toward the base, a test specimen disposed on the test table, and lead cone assemblies disposed on the base, in which the lead cone assemblies include a lead cone in a cone shape and an adjustment plate disposed between the lead cone and the base, a sawtooth shock wave is generated when the test table collides with the lead cone due to a drop of the test table, and a sawtooth shock duration is adjusted by adjusting heights of the lead cone assemblies according to the adjustment plate.

Abstract: A slim headrest device may include a fixed guide bracket provided upside a seatback; a moving plate, a first end portion of which is moved forward and rearward by being guided by the fixed guide bracket and a second end portion of which is in a shape bent upward; and a moving guide bracket to which a headrest is mounted, the moving guide bracket being moved upwardly and downwardly by being guided by the second end portion of the moving plate.

Abstract: A slim headrest device may include a fixed guide bracket provided upside a seatback; a moving plate, a first end portion of which is moved forward and rearward by being guided by the fixed guide bracket and a second end portion of which is in a shape bent upward; and a moving guide bracket to which a headrest is mounted, the moving guide bracket being moved upwardly and downwardly by being guided by the second end portion of the moving plate.

Abstract: A device for inputting Chinese characters according to the present invention is a Chinese character inputting device for inputting Chinese characters into an information communication terminal and comprises: character keys which use each stroke in [] that are the components of the character system ‘’ as basic graphemes, which consist of a plurality of keys for allocating graphemes formed through continuous transformation from the basic graphemes, and which are for inputting graphemes corresponding to the manipulation of one or a plurality of the keys in time series order; a selection key that enables the selection of one of the graphemes or Chinese characters that can be formed by manipulating the character keys; a storage unit that stores the graphemes, characters and Chinese characters formed of at least two or more graphemes that are coupled according to a set sequence; a control unit that searches the storage unit for graphemes inputted through the character keys, characters and Chinese characters formed

Abstract: A constant-current-drive LED module device includes a rectifier configured to receive and rectify an alternating current power source; a unidirectional LED module unit configured to connect to one end of the rectifier; and a constant current unit configured to connect between the unidirectional LED module unit and the other end of the rectifier to control constant current.

Abstract: A constant-current-drive LED module device includes a rectifier configured to receive and rectify an alternating current power source; a unidirectional LED module unit configured to connect to one end of the rectifier; and a constant current unit configured to connect between the unidirectional LED module unit and the other end of the rectifier to control constant current.

Abstract: The present invention relates to a database system for ideograms and a processing method thereof. The database system includes an ideogram database having fields in which shapes of characters constituting the ideograms are separated into Chinese radicals comprised of dots and strokes, each Chinese radical comprising one stroke count, a sequence is assigned to each of the Chinese radicals, and the respective ideograms are arranged according to the sequences of the Chinese radicals and a stroke order of each ideogram; and a list window for searching the ideogram database for the ideograms based on the arranged sequences of the ideograms.