Abstract:
A plasma display, a driver for the plasma display, and a driving method thereof apply a reset minimum voltage according to a detected temperature of the plasma display. In the driving method, a reset falling waveform gradually decreasing to a reset minimum voltage is applied to a scan electrode during a falling period of a reset period, and a scan voltage is applied to the scan electrode selected during an address period. An address period is started the voltage applied to the scan electrode reaches the reset minimum voltage. In addition, a voltage difference between the reset minimum voltage and the scan voltage is determined according to a temperature of the plasma display.
Abstract:
The present invention relates to a method for preparing hexafluoropropylene oxide with high yield, and particularly to a method for preparing hexafluoropropylene oxide comprising the step of performing a two-phase interfacial reaction between an organic phase containing hexafluoropropylene and an aqueous phase containing a hypochlorite oxidant in the presence of a phase-transfer catalyst and a non-ionic surfactant to improve the degree of emulsification and dispersion of the organic phase and to increase the contact interfacial area, thereby increasing the efficiency and the yield of the reaction.
Abstract:
A plasma display device and a driving method thereof. The plasma display device includes drivers for scan, sustain and address electrodes and a controller for controlling the drivers. The scan electrode driver includes a capacitor whose charge is proportional to an on period of a switch included in the driver circuit or may be otherwise controlled. By controlling the charge of the capacitor, a voltage difference between the reset falling voltage and the select voltage that are applied to the scan electrodes during the reset and subsequent address periods can be controlled to control the discharge margin and to correspond to the design of the plasma display device. The need for a Zener diode with a high withstand voltage is alleviated.
Abstract:
In a plasma display and a voltage generator thereof, a first electrode of a transistor is coupled to a scan electrode. In addition, a cathode of a Zener diode is coupled to a second electrode of the transistor, and an anode of the Zener diode is coupled to a power source generating a scan voltage. A first resistor is coupled between the first electrode of the transistor and a control electrode of the transistor, and a second resistor is coupled between the control electrode of the transistor and the anode of the Zener diode. A final voltage during a reset period is generated by the power source generating the scan voltage.
Abstract:
A method and portable terminal for providing a video communication service are disclosed, in which video and audio data transmitted or received during video communication are recorded and the video and audio data are stored into files by the portable terminal, the files are merged; and the merged files are played. The portable terminal can store images and voices of both users during video communication by successively storing video and audio data, which are transmitted or received, in response to a user's key input and merging the video and audio data into a single file.
Abstract:
Provided is a method and wireless terminal for enabling the user of the wireless terminal to transmit an emoticon representing an emotion to another party. The method and terminal are provided where at least one emoticon may be displayed in a video telephone mode and a selected emoticon may be displayed and transmitted to the other party.
Abstract:
A stacked package and method of manufacture are provided. The stacked package may include a first semiconductor package, a second semiconductor package, plugs and spacers. The second semiconductor package may be stacked on the first semiconductor package. The plugs may electrically connect the first semiconductor to the second semiconductor package. The spacer may be interposed between the first semiconductor package and the second semiconductor package to form a gap between the first semiconductor package and the second semiconductor package, thereby preventing an electrical short between the plugs.
Abstract:
The present invention provides a 3′,4′,5-trimethoxy flavone derivative and a pharmaceutically acceptable salt thereof, preparation thereof, and a pharmaceutical composition for the treatment and prevention of dry eye syndrome comprising the same as an active ingredient.The 3′,4′,5-trimethoxy flavone derivative and its pharmaceutically acceptable salt inhibit corneal damage through excellent stimulatory action on mucus secretion in the conjunctiva and therefore may be effective as a prophylactic or therapeutic agent for dry eye syndrome.
Abstract:
Disclosed is a wireless terminal and method for comparing the motions of a video with the motions of a moving picture being displayed as a model. The method comprises the steps of switching to motion compare mode by selection during displaying the moving picture, extracting at least two image frames from video data input in the motion compare mode, extracting a shift frame from the image frames, extracting sampling data from the shift frame with reference to predetermined directions, converting the sampling data into orientation data, and comparing the orientation data with the orientation data of the moving picture to generate and display the results of the comparison.
Abstract:
A mobile communication terminal and an operation method thereof are provided. The terminal includes: a detachable display window detached from a main body, for performing short-range wireless communication with the main body; and the main body for performing the short-range wireless communication with the detachable display window, wherein the detachable display window has a liquid crystal display (LCD) wireless communicating unit for providing a wireless communication depending on a short-range wireless communication protocol, and a LCD for displaying the predetermined image.