Abstract:
A method and terminal for performing a video communication service where the operation mode of the mobile communication terminal switches to a screen sharing mode upon receipt of a screen sharing request from a user during a video communication, screen data selected according to user selection information in the screen sharing mode is output to a display unit, the screen data displayed on the display unit is acquired, and the acquired screen data is transmitted instead of the user's video data to a corresponding terminal performing the video communication.
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:
A scan electrode driver includes a scan integrated circuit including first and second control signal input terminals, a data input terminal, first and second voltage terminals and a plurality of output terminals, and a logic element. A voltage of the plurality of output terminals may be a voltage of one the plurality of voltage terminals at least based on a level of a control signal transmitted to the first control signal input terminal. The logic element may be adapted to perform an operation on the control signal to generate a second control signal to be applied to the second control signal input terminal. The scan integrated circuit may establish a voltage of the plurality of output terminals to be a voltage of the first or second voltage terminal based on a level of the control signal.
Abstract:
A plasma display device including a plasma display panel (PDP), a temperature detector for detecting temperature of the PDP, a driver for applying a driving voltage to a scan electrode, and a controller for generating a control signal to control the driver according to the temperature. The driver includes a transistor and first and second resistors. The transistor is coupled between a first power source and the scan electrode. The first power source supplies a scan voltage to the scan electrode. At least one of the first resistor and the second resistor is a variable resistor having a resistance that varies according to the control signal of the controller. A low discharge due to high temperature can be reduced or prevented, and the number of power sources of the plasma display device can be reduced.
Abstract:
Chitosan membranes chelated with silver or cuprous material may be used to separate olefins from a mixture of olefins and paraffins. The feed stream is humidified, demisted, treated to remove sulfur compounds and passed to a cell having a chitosan membrane containing chelated silver or cuprous compounds. The process has a reasonable flux rate and is operable at reasonable temperatures and pressures. The process could be used in an olefin separation train.
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 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.
Abstract:
The present invention relates to a fluorine-containing amphoteric polymer for surface coating and preparation method thereof, in particular, to a fluorine-containing amphoteric polymer for surface coating and preparation method thereof in which a hydrocarbon compound with hydrophilic groups serves as a main chain and a macromonomer prepared by copolymerization of an unsaturated hydrocarbon compound and a perfluoro alkyl compound is incorporated into side chains, thereby imparting amphoteric property on the present polymer. Therefore, the present polymer allows self-emulsification and shows soil release, water-repellent and oil-repellent properties with no help of emulsifier, applicable to a variety of industrial fields such as coating, adhesive, fiber, precision chemistry, biological/biochemical industry, electric/electronic, automobile and metal industries.
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 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.