Abstract: A demand control system for the multi-type air conditioner includes a demand control unit for controlling the operational efficiency of the air conditioners by changing the operation mode of the air conditioners when the estimated wattage exceeds a set wattage while enabling the user to feel more comfortable.

Abstract: A system for controlling multiple air conditioners. The system includes a demand control unit configured to calculate an estimated power amount used by the multiple air conditioners based on an amount of power consumed by the multiple air conditioners during a predetermined time period, and to forcibly control an operation of one or more air conditioners based on a size of the estimated power amount. Further, the demand control unit is connected to the multiple air conditioners and communicates with the multiple air conditioners using a serial data communication protocol.

Abstract: A system for controlling multiple air conditioners. The system includes a demand control unit configured to calculate an estimated power amount to be used by the multiple air conditioners based on an amount of power consumed by the multiple air conditioners during a predetermined time period, and to forcibly control an operation rate of one or more air conditioners based on a priority level assigned to the one or more air conditioners.

Abstract: A lighting device controller which controls a lighting device and provides a signal to an air conditioner controller indicating an operation state of the lighting device, and an air conditioner controller which receives a signal from a lighting device controller indicating an operation state of a lighting device, and controls an air conditioning unit corresponding to the lighting device in response to the signal are disclosed.

Abstract: A method and wireless communication system for providing QoS in a wireless network communicating through a point-to-point network are provided. The method includes: (a) at least one of intermediate nodes and a receiving node, selecting at least one QoS management node among different nodes within a predetermined range which are not included on a forwarding route, the forwarding route reaching from a transmitting node to the receiving node via at least one intermediate node satisfying QoS requirements; (b) the selected QoS management node, managing QoS management information of the different nodes which are not included on the forwarding route; and (c) the QoS management node, changing the forwarding route on the basis of the QoS management information so that the changed forwarding route passes through a different node satisfying the QoS requirements, if it is expected that at least one intermediate existing on the forwarding route will not satisfy the QoS requirements.

Abstract: Provided are an apparatus and method for selecting one of an image signal input from an image signal inputting device and an image signal obtained by changing the size of the image signal input from the image signal inputting device and displaying the selected image signal on a display device. The apparatus includes an image size converter for changing the size of a first image signal and outputting the result as a second image signal; and a selector for receiving the first and second image signals and selectively outputting one of the first and second image signals in response to a first control signal. With the apparatus and method, it is possible to selectively reproduce a high-definition image and a low-definition image.

Abstract: A clamping apparatus for clamping a plurality of Hi-Fix boards arranged in a row, includes at least one rotational clamping unit installed to clamp facing end sides of the two or more Hi-Fix boards together, and a plurality of clamping units installed to clamp end sides of the Hi-Fix boards other than the facing sides thereof. The rotational clamping unit includes a clamper installed to rotate about a fixed rotation point to clamp or release the claming of the facing end sides of the two or more Hi-Fix boards, and a driving unit for providing a rotational force to the clamper.

Abstract: Disclosed are a central control system for multi-type air conditioners and an operating method thereof. In the central control system, multi-type air conditioners comprise a large number of indoor devices and a small number of outdoor devices, and a central controller is coupled to the multi-type air conditioners over a network. The central controller transmits a control graphic user interface (GUI) program provided therein to the remote control device so that an integrated control operation for respective air conditioners can be carried out. The central controller adjusts a transmission time of the control command signal received from the remote control device and transmits the control command signal to a corresponding air conditioner according to a result of the adjustment so that signal collision can be avoided.

Abstract: A test handler is disclosed in the present invention. The test handler may include a test tray on which a plurality of inserts are arrayed for loading at least one semiconductor device, at least one opening unit for simultaneously opening one part of the plurality of inserts which are arrayed on one part of the test tray, and a test tray transfer apparatus for allowing the opening unit to simultaneously open other parts of the plurality of inserts which are arrayed on another part of the test tray as the test tray is transferred. Therefore, although semiconductor devices to be tested change their sizes, the replaced parts of the test handler are reduced in number, thereby reducing manufacturing cost and replacement work time. The inventive test handler reduces semiconductor devices loading time, reduces jamming, increases teaching efficiency and improves space utilization efficiency. Furthermore, the test handler can be applied to various types of testers.

Abstract: An earthing device which needs not be buried under the ground is provided. The earthing device includes an earthing panel and a discharging device mounted inside the earthing panel. The discharging device includes at least one electrode plate, multiple discharging electrodes coupled to the electrode plate, and catalyst filled between the discharging electrodes. Since an earth electrode needs not be buried under the ground, it requires less construction costs, time and area, and environmental pollution (especially, soil pollution) does not happen. Further, the earthing device can be simply and economically installed regardless of place.

Abstract: A central control system controls peak power of multiple air conditioners that includes indoor units installed in rooms of a building and an outdoor unit for controlling refrigerant circulation. A central controller is connected to the multiple air conditioners via a network to perform central control or monitoring of operations of the air conditioners. The central controller performs peak power control if current power consumption of the air conditioners, calculated based on operating states thereof, exceeds a previously input reference management power value. A signal converter is connected between the multiple air conditioners and the central controller to perform mutual conversion of different protocol signals communicated between the multiple air conditioners and the central controller. This decreases excessive electricity costs due to excessive power consumption while approximately maintaining cooling/heating efficiencies, and also prevents the entire power of the building from being cut off.

Abstract: A test handler is disclosed. A posture changing unit for changing a posture of a test tray on which semiconductor devices have been loaded changes the posture of the test tray in a soak chamber. While the posture of the test tray is changed, the devices can be pre-heated/pre-cooled, thereby reducing the soak chamber length and the pre-heating/pre-cooling time.

Abstract: When a test handler loads semiconductor devices of user trays onto a test tray, the test handler adjusts a front/rear pitch or a right/left pitch between the semiconductor devices, adjusts the right/left pitch or the front/rear pitch, and loads the semiconductor devices. The test handler can sequentially adjust individually the front/rear pitch and the right/left pitch between the semiconductor devices, thereby reducing the apparatus weight and the loading time.

Abstract: A central control system for airconditioner(s) and a method for controlling the same. The central control system can centrally control a plurality of airconditioners connected to the same communication network. In the system, a protocol converter connected to a central controller converts a communication standard of a signal communicated between the airconditioners and the central controller into another communication standard, acquires connection state information by scanning connection state information of individual airconditioners, and transmits the acquired information to the central controller, such that a manager can correctly monitor an airconditioner state using the central controller, resulting in the implementation of a reliable control system.

Abstract: A central control system includes a plurality of air conditioners and a central control unit connected to the air conditioners over a network. The air conditioners are installed in rooms of a building to provide air conditioning in the rooms. The central control unit receives a control command for monitoring and controlling each of the air conditioners, and adjusts an operating schedule of each of the air conditioners to limit total peak power consumption of the air conditioners in operation below a reference power value. The central control unit controls the operation of each of the air conditioners based on the adjusted operating schedule. When the total peak power consumption exceeds the reference power value, the central control unit prevents the entire air conditioning system from shutting down, which improves stability of the air conditioning system and decreases electricity costs for air conditioning.

Abstract: An external memory device, a method of storing image data for the same, and an image processor using the method to improve an image encoding and/or decoding speed are provided. The method includes forming image data included in a predetermined-size sub-block divided from a macroblock as at least one data storage unit and storing the data storage unit in the external memory.

Abstract: An intra prediction method and apparatus. The intra prediction method of intra predicting a macroblock divided into a plurality of blocks includes intra predicting the plurality of blocks in a predetermined scanning order. One or more block among the plurality of blocks are intra predicted independently of their respective, immediate preceding block that is intra predicted immediately before the one or more blocks are intra predicted and are intra predicted in parallel with their respective, immediate preceding blocks.

Abstract: An method and apparatus for processing a video-ID signal which detects, records, and reproduces a video-ID signal. The method for processing the video-ID signal includes the steps of detecting the starting position of a video-ID signal from an input video signal, compressing video data started from the video-ID signal as a predetermined compression unit, and recording the starting position of the detected video-ID signal in a predetermined recording area. The method also includes detecting the starting position of the video-ID signal recorded in the predetermined recording area, and decoding a video signal which inserts the video-ID signal into the starting position. Therefore, a video-ID signal is recorded in a time-lapse video recording and reproducing system, and the video-ID signal is identified with a video signal to be compressed and restored, so that compatibility between different systems having different switching portions is maintained.

Abstract: An airconditioner system for integrating multiple areas. A plurality of multi-airconditioners are grouped into some groups. CPU connected in parallel to individual multi-airconditioner groups, that have been distributed and installed in a wide area or building, controls individual multi-airconditioner groups to be operated simultaneously, resulting in a shorter control time. Although an unexpected communication failure occurs in one multi-airconditioner group, the remaining multi-airconditioner groups other than the erroneous multi-airconditioner group can be normally controlled, resulting in increased stability and reliability of an overall airconditioning system.

Abstract: A central control system of air conditioners includes a multi-type air conditioning system, a power meter and a central controller. The air conditioning system includes a plurality of indoor units for air conditioning installed in rooms of a building and an outdoor unit for circulation of refrigerant, where the indoor units share the outdoor unit. The power meter is connected to the outdoor unit to measure power consumption of the air conditioning system when the system operates. The central control unit calculates respective power consumptions of the indoor units based on both the power consumption measured by the power meter and operation information of the air conditioning system, and displays the calculated power consumptions of the indoor units. It is thus possible to determine respective power consumption patterns and electricity charges of the indoor units more accurately, thereby improving management efficiency of the entire air conditioning system.