Abstract: A method of dynamically scaling a power level of a microprocessor is provided. The method includes: calculating unit workload rates during unit periods in a first duration period; changing a length of the first duration period based on a variation of the unit workload rates; calculating a period workload rate by accumulating the unit workload rates in the first duration period; and changing the power level of the microprocessor based on the calculated period workload rate.

Abstract: An electronic device performs power management by switching between an active mode and an idle mode. The active mode is launched by applying a main clock signal to a processor within the electronic device. The idle mode is launched in parallel with a scaling down of a power level of processor.

Abstract: In a method of processing data to reduce noise in a touch screen display device, a plurality of input coordinates are generated in response to a touch operation on a touch panel. A plurality of final coordinates are generated by filtering the plurality of the input coordinates using a valid area that is flexibly set based on a direction and a speed of the touch operation. An image inputted by the touch operation is displayed without a minute vibration or an abnormal distortion based on the plurality of the final coordinates.

Abstract: An X-ray imaging system includes a digital imaging panel for capturing an X-ray image of an object and an X-ray device for irradiating a beam of X-rays toward the digital imaging panel and making wireless communication with the digital imaging panel. The X-ray device is capable of directly receiving data of an X-ray image of an object from a digital imaging panel, enabling an operator to see the X-ray image on a real time basis and editing and storing the X-ray image by itself.

Abstract: The present invention relates to an X-ray scanning system which is used to synchronize the preheating of an X-ray irradiation unit and the initialization of a digital image panel using wireless synchronization signals. The preheating of the X-ray irradiation unit and the initialization of the digital image panel are synchronized with each other using the wireless synchronization signal generated by the user's commands inputted through a hand-held switch unit. This makes it possible to conveniently take an X-ray image of an object.

Abstract: An X-ray device for irradiating a beam of X-rays on an object to capture an X-ray image of the object is smaller in size and weight than conventional ones. The X-ray device includes an X-ray tube for generating the beam of X-rays and irradiating the beam of X-rays on the object, a shutter arranged around an X-ray irradiation axis for regulating an X-ray irradiation region on which the beam of X-rays is irradiated through the object, and a visual indicator unit arranged on the shutter for movement together with the shutter, the visual indicator unit being designed to visually indicate the X-ray irradiation region. In the X-ray device, the X-ray irradiation region is visually indicated by laser light without having to use a lamp otherwise provided between the X-ray tube and the shutter.

Abstract: A battery-powered x-ray imaging apparatus uses a battery with a reduced capacity as a power source. The x-ray imaging apparatus includes a DC-AC converting part for converting a direct current of a battery to an alternating current, a high-voltage transformer for increasing a magnitude of the alternating current to output a high-voltage alternating current, an AC-DC converting part for converting the high-voltage alternating current to a high-voltage direct current, and an x-ray tube having an anode terminal and a cathode terminal electrically connected to the AC-DC converting part. The x-ray tube is designed to generate x-rays by allowing electrons emitted from the cathode terminal to impinge on the anode terminal. The DC-AC converting part, the high-voltage transformer, the AC-DC converting part and the x-ray tube are sealingly received within the housing part filled with oil.

Abstract: A high voltage transformer is small-sized, lightweight and less costly to fabricate. The high voltage transformer is designed to maintain equal the potential difference between the components of two transforming component groups and also to keep the components of the respective transforming component groups equipotential at the same distance in the direction extending from a first end to a second end. This eliminates the need to dispose an insulating body between the components of the first and second transforming component groups. This also makes it possible to fabricate the high voltage transformer with a small size and in a cost-effective manner.

Abstract: A battery-powered x-ray imaging apparatus uses a battery with a reduced capacity as a power source. The x-ray imaging apparatus includes a DC-AC converting part for converting a direct current of a battery to an alternating current, a high-voltage transformer for increasing a magnitude of the alternating current to output a high-voltage alternating current, an AC-DC converting part for converting the high-voltage alternating current to a high-voltage direct current, and an x-ray tube having an anode terminal and a cathode terminal electrically connected to the AC-DC converting part. The x-ray tube is designed to generate x-rays by allowing electrons emitted from the cathode terminal to impinge on the anode terminal. The DC-AC converting part, the high-voltage transformer, the AC-DC converting part and the x-ray tube are sealingly received within the housing part filled with oil.

Abstract: The present invention relates to an X-ray diagnostic apparatus, and more particularly, to an X-ray diagnostic apparatus that can confirm an area on which X-ray is illuminated, using an image sensor, prior to photographing the X-ray of a wounded portion of a patient or an animal. The X-ray diagnostic apparatus according to the present invention can confirm the area on which the X-ray is illuminated, through the image sensor, thereby decreasing the amount of heat generated and saving the power consumption required to operate the lamp, compared with the conventional X-ray diagnostic apparatus. Also, the X-ray diagnostic apparatus according to the present invention can combine, edit and provide the real image photographed by the X-ray, the image to be photographed through the X-ray, or the image of a patient to exactly and conveniently diagnose the health state of the patient.

Abstract: A high voltage transformer is small-sized, lightweight and less costly to fabricate. The high voltage transformer is designed to maintain equal the potential difference between the components of two transforming component groups and also to keep the components of the respective transforming component groups equipotential at the same distance in the direction extending from a first end to a second end. This eliminates the need to dispose an insulating body between the components of the first and second transforming component groups. This also makes it possible to fabricate the high voltage transformer with a small size and in a cost-effective manner.