Abstract: The present invention relates to a method of purifying olefin, the method comprising removing a small amount of acetylenic compounds contained in olefin by using pyrrolidinium-based or piperidinium-based ionic liquid mixtures comprising copper (I) halide. According to the method of the present invention, copper (I) halide is stabilized by pyrrolidinium-based or piperidinium-based ionic liquids, suppressing the oxidation of Cu(I) into Cu(II), whereby the capacity of removing acetylenic compounds can be maintained for a long time and the selective removal rate of acetylenic compounds to olefin can be significantly improved. In addition, since the ionic liquid mixtures comprising copper (I) halide used in the method of the present invention can be applied to both absorption and extraction processes, it can effectively remove acetylenic compounds from olefin in a more simple and economical way compared to the existing adsorption and membrane separation processes.

Abstract: Disclosed relates to an electromagnetic interference (EMI) filter. Capacitance and resistance or inductance of an EMI filter, which includes a resistor and a capacitor or an inductor and a capacitor, can be controlled, such that a cutoff frequency can be freely controlled without manufacturing a separate EMI filter according to a characteristic of a desired cutoff frequency. Further, an intelligent EMI filter that can be applied to a surge protection device, which includes an ESD protection function as well as the EMI filter, is provided, such that a process can be simplified and costs can be reduced.

Abstract: An image forming apparatus and a security setting method thereof, the method including: inputting an encryption key of a wireless network connection of the image forming apparatus; displaying a selection screen including one or more functions which the image forming apparatus provides; and selecting at least one of the displayed functions with which to share the encryption key as a password.

Abstract: The present invention relates to a process for removing acetylenes from olefins by using an ionic liquid-based solution, and particularly to a process for removing a small amount of acetylenes contained in olefins by using an ionic liquid-based solution where copper halide (CuX, X=halogen atom) is dissolved. In an ionic liquid-based solution used in the present invention, copper halide (CuX) is stabilized by ionic liquid, thus preventing monovalent copper ion (Cu+) from being oxidized into divalent copper ion (Cu2+), maintaining the superior activity of monovalent copper ion (Cu+) in removing acetylene for a long period of time, and remarkably increasing the selective removal of acetylene-based compounds. Moreover, an ionic liquid-based solution used in the present invention may serve as an extracting solution as well as an absorbent, thereby facilitating the operation and reducing equipment cost in comparison to the conventional extracting agent used in a slurry phase.

Abstract: A system for treating recirculating nutrients using floating media is disclosed. The system is operated in such way that wastewater influent path is changed between a first mode and a second mode at a certain period of time interval. Wastewater influent at the first mode sequentially flows into a first anoxic tank, a second anoxic tank, and an aerobic tank. Wastewater influent at the second mode sequentially flows into the second anoxic tank, the first anoxic tank, and the aerobic tank. Part of the wastewater that flows into the aerobic tank bypasses the first anoxic tank and the second anoxic tank. Part of the wastewater, which flows from the aerobic tank into the first anoxic tank or from the aerobic tank into the second anoxic tank, continuously bypasses the aerobic tank through an internal recirculation pump.

Abstract: A hybrid wired and wireless communication device and a wired and wireless communication method thereof. The wired and wireless communication method includes determining whether a wired communication module has been linked to a wired communication network, setting a wireless communication operating mode of a wireless communication module to an infrastructure mode when it is determined that the wired communication module has not been linked to the wired communication network, and setting the wireless communication operating mode to an ad-hoc mode when it is determined that the wired communication module has been linked to the wired communication network. Therefore, the wireless communication operating mode is automatically set according to whether the wired communication network has been linked to the wired communication module, thereby increasing a user's convenience.

Abstract: Disclosed herein is a metal mosaic tile used as the interior finishing material on the wall of a building. The tile includes a metallic board and a metallic cover. Convex parts are provided on the front of the metallic board at regular intervals and concave parts are provided on the back of the metallic board at regular intervals. The metallic cover includes a bent side plate, a top plate and an opening for accommodating at least one of the convex parts of the metallic board, and the upper surface of each convex part adheres to the top plate. The tile has high fire resistance, effectively prevents condensation from occurring, mitigates vibration or noise, has high joining strength and high attaching strength against an object to which the tile is attached, and permits the mass production of metal mosaic tile at lower cost.

Abstract: An apparatus and method of generating personal fonts is provided, which can modify a trace of handwriting inputted by a user into an elegant one and generate diverse personal fonts in accordance with user's style of handwriting. The apparatus for generating personal fonts includes a character input unit to receive an input of a character trace from a user, a character recognition unit to recognize a representative character corresponding to an input character from the input character trace, a representative trace generation unit to generate a representative trace expressing a trace of the representative character, and a trace modification unit to modify the trace of the input character by combining a weight value of the generated representative trace with the trace of the input character.

Abstract: A network printer and a network printing method of restricting a host from using the network printer. The network printing method includes, if identification information of a host and a print job request signal are received from the host, receiving print data from the host and processing the received print data into a printable signal, determining whether an error exists in a print job during the processing of the print data into the printable signal, if the error exists, automatically registering the identification information of the host in a use restriction list to prevent execution of the print job, and if no error exists in the print job, executing the print job with respect to the print data.

Abstract: Disclosed relates to an electromagnetic interference (EMI) filter. Capacitance and resistance or inductance of an EMI filter, which includes a resistor and a capacitor or an inductor and a capacitor, can be controlled, such that a cutoff frequency can be freely controlled without manufacturing a separate EMI filter according to a characteristic of a desired cutoff frequency. Further, an intelligent EMI filter that can be applied to a surge protection device, which includes an ESD protection function as well as the EMI filter, is provided, such that a process can be simplified and costs can be reduced.

Abstract: Provided is a method of performing network scanning that changes a scanning operation according to whether a wireless network printer establishes a link and performs a specific operation, and an apparatus using the method. The method of performing network scanning in the wireless network printer comprises the steps of storing the result of a passive scan for each channel; determining whether a specific operation is performed while the passive scan is performed; and stopping the passive scan when the specific operation is performed. The wireless network printer is able to perform the scanning operation without interrupting basic data communication, thereby efficiently operating the network and preventing degradation or disconnection.

Abstract: An image forming apparatus and a method of controlling the image forming apparatus. The method includes allowing the image forming apparatus and the external device to communicate with each other; and controlling the driving of the image forming apparatus according to the communication interface used in the communication between the image forming apparatus and the external device. Accordingly, it is possible to maximize convenience when using an image forming apparatus by automatically controlling the driving of an image forming apparatus according to the communication interface used in communication between an external device and the image forming apparatus.

Abstract: Provided is a method and apparatus for establishing a wireless connection between devices to enable wireless data communication in a wireless communication network. The method includes: establishing the wireless connection with default wireless setting values; receiving currently set wireless setting values of an external device from the external device; and establishing the wireless connection using the received wireless setting values of the external device. Accordingly, when a user wants to establish a wireless connection between two devices to enable wireless data communication in a wireless communication network, by automatically matching wireless setting values of the two devices to each other using pre-defined default wireless setting values, the inconvenience of a user having to personally match the wireless setting values of the two devices is avoided.

Abstract: Provided is a method of performing network scanning that changes a scanning operation according to whether a wireless network printer establishes a link and performs a specific operation, and an apparatus using the method. The method of performing network scanning in the wireless network printer comprises the steps of storing the result of a passive scan for each channel; determining whether a specific operation is performed while the passive scan is performed; and stopping the passive scan when the specific operation is performed. The wireless network printer is able to perform the scanning operation without interrupting basic data communication, thereby efficiently operating the network and preventing degradation or disconnection.

Abstract: An image forming device, a host device connected to the image forming device and controlling methods thereof. The image forming device includes a memory to store information regarding remaining recording material stored in a recording material storage medium, an image generator to generate at least one of a preview image of a document based on the remaining recording material and a color table image to display colors available in the image forming device based on the remaining recording material, and a controller to control the image generator to generate the at least one of the preview image and the color table image and to display the at least one of the preview image and the color table image on a web browser if an estimate of an amount of recording material to be consumed to print the document is greater than the remaining recording material. Accordingly, a user can prevent unwanted prints.

Abstract: A terminal device for preventing the waste of resources is connected to an authentication server and at least one external device through networks, and a method for controlling the same. The terminal device comprises a communication module for requesting authentication in connection with the authentication server and receiving a result of the authentication request, and a control module for converting an operation mode to a communication mode based on the result of the authentication request when the authentication request is approved, the communication module is enabled for communication with the external devices. The operation mode is converted to a power saving mode when the authentication request is not approved.

Abstract: A wireless terminal apparatus having a Wireless Local Area Network (WLAN) standard automatic change function and method thereof are provided. The wireless terminal apparatus comprises a memory for storing information of a condition change, a wireless communication module for communicating with a predetermined correspondent node according to a first WLAN standard, a communication status detection unit for detecting a communication status of the wireless communication module and determining whether an event occurs satisfying the condition for change, and a central processing unit, changing the first WLAN standard to a second WLAN standard and establishing a communication link. An optimum WLAN standard can be established and a communication is performed according to the WLAN standard.

Abstract: A method and apparatus for automatically configuring a wireless network device by receiving configuration information from a configuration information server that stores and provides the configuration information of the wireless network device are provided. The method includes: searching for service sets existing within range of the wireless network device and creating a list of the service sets; transmitting a request message requesting configuration information of the wireless network device to a configuration information server of each of the service sets using the list of the service sets; receiving a response message comprising the configuration information of the wireless network device from the configuration information server; and automatically configuring the wireless network device using the received configuration information.

Abstract: The present invention discloses a method for sending data from a second agent to a first agent in a bus system having a host and at least two agents of the first agent and at least one second agent. The first and second agents are connected by an interrupt signal line externally provided to the bus system, and the second agent sends an interrupt signal to the second agent without the intervention of the host. The first agent having received the interrupt signal directly receives data stored in the second agent.

Abstract: An apparatus and method for outputting a result of a wireless network search are provided. The apparatus and method include outputting the wireless configuration state of a printing apparatus which transceives data with at least one peripheral wireless network apparatus connected thereto through wireless network. The apparatus and method further include receiving a search request of the wireless configuration state of the printing apparatus and the wireless configuration state of the wireless network apparatus from the user, searching the wireless configuration state of the printing apparatus and the searched wireless configuration state of the wireless network apparatus according to the request of the user, and outputting the results of the searched wireless configuration state of the printing apparatus and the wireless configuration state of the wireless network apparatus.