Abstract: A sensing technique using a capacitance touch sensor as a user interface is provided. An apparatus for sensing the movement of fingers using a multi-touch sensor includes a touch determination module which determines whether a user has actually touched a touch sensor comprising one or more touch points with at least one of his/her fingers, a clustering module which groups a plurality of electrodes arrayed in the touch sensor into one or more clusters according to a set of standards if the touch determination module determines that the user has actually touched the touch sensor with at least one of his/her finger, a position value calculation module which calculates a finger position value indicating the location of the finger of the user that touches the touch sensor for each of the clusters, and a movement information detection module which detects movement information of the finger of the user that touches the touch sensor using information regarding variations over time in the finger position value.

Abstract: A display apparatus with a radio frequency (RF) sensor and a user detection method using an RF sensor are provided. The display apparatus includes: a display panel configured to display an image; a support frame located in a back area of the display panel and configured to support parts of the display apparatus; and a radio frequency (RF) sensor configured to be arranged in the support frame for performing one of transmitting a radio frequency signal to a front area of the display panel and receiving the radio signal from the front area of the display panel, wherein the radio frequency signal which is transmitted or received passes through the display panel.

Abstract: An input device and method for protecting input information from exposure, in which the time of input of information is determined using a tactile output to protect the input information from being exposed. The input device for protecting input information from exposure includes a user-input module for receiving predetermined input information from a user, a control module for setting the information inputted in association with a tactile signal among the input information as user-input information, and a tactile-output-generation module for generating and providing the tactile signal to the user-input module under the control of the control module.

Abstract: An electronic apparatus, control method thereof, remote control apparatus that controls the electronic apparatus, and control method thereof. The remote control apparatus includes a communication unit which communicates with the electronic apparatus; a user input unit which receives a user button selection indicating an input button; a sensing unit which senses movement of the remote control apparatus; and a control unit which controls the communication unit to transmit information about the user button selection to perform a function corresponding to the input button if the remote control apparatus is in a button input mode, and to transmit information about the movement of the remote control apparatus to the electronic apparatus to control the electronic apparatus by the movement if the remote control apparatus is in a motion recognition mode. Accordingly, controlling a game or a multimedia content is easier, and the user is provided with a new and interesting experience.

Abstract: Provided is an apparatus and method of recognizing a motion that is capable of performing a pointing function and a character input function using motions sensed by an optical sensor and an inertial sensor. The apparatus includes an inertial sensor sensing a first motion by using at least one of acceleration and angular velocity that are generated by an input motion; an optical sensor sensing a second motion by using reflection of light due to the motion; a locus calculating unit calculating the locus of the motion on the basis of the locus of the first motion and the locus of the second motion; and a communication unit transmitting the calculated locus of the motion.

Abstract: An electronic apparatus, control method thereof, remote control apparatus that controls the electronic apparatus, and control method thereof. The remote control apparatus includes a communication unit which communicates with the electronic apparatus; a user input unit which receives a user button selection indicating an input button; a sensing unit which senses movement of the remote control apparatus; and a control unit which controls the communication unit to transmit information about the user button selection to perform a function corresponding to the input button if the remote control apparatus is in a button input mode, and to transmit information about the movement of the remote control apparatus to the electronic apparatus to control the electronic apparatus by the movement if the remote control apparatus is in a motion recognition mode. Accordingly, controlling a game or a multimedia content is easier, and the user is provided with a new and interesting experience.

Abstract: An electronic chalkboard system, a control method thereof, and a pointing device are provided. The electronic chalkboard system includes a plurality of display panels; a pointing device which calculates coordinate information about a touched position based on a reference signal generated on the display panels when touching a first panel among the display panels; and an image processor which generates a signal differently set with respect to each of the display panels on the display panels to determine the first panel among the display panels and displays an image corresponding to the coordinate information calculated by the pointing device on the first panel.

Abstract: Provided is an apparatus and method of recognizing a motion that is capable of performing a pointing function and a character input function using motions sensed by an optical sensor and an inertial sensor. The apparatus includes an inertial sensor sensing a first motion by using at least one of acceleration and angular velocity that are generated by an input motion; an optical sensor sensing a second motion by using reflection of light due to the motion; a locus calculating unit calculating the locus of the motion on the basis of the locus of the first motion and the locus of the second motion; and a communication unit transmitting the calculated locus of the motion.

Abstract: A pointing device calculates a current position of the pointing device based on a point of time at which an incident signal is sensed, and compensates the current position based on a deviation of position of the pointing device which is calculated using the current position of the pointing device. Accordingly, a problem on the GUI caused by position distortion of the pointing device is minimized.

Abstract: An electronic apparatus, control method thereof, remote control apparatus that controls the electronic apparatus, and control method thereof. The remote control apparatus includes a communication unit which communicates with the electronic apparatus; a user input unit which receives a user button selection indicating an input button; a sensing unit which senses movement of the remote control apparatus; and a control unit which controls the communication unit to transmit information about the user button selection to perform a function corresponding to the input button if the remote control apparatus is in a button input mode, and to transmit information about the movement of the remote control apparatus to the electronic apparatus to control the electronic apparatus by the movement if the remote control apparatus is in a motion recognition mode. Accordingly, controlling a game or a multimedia content is easier, and the user is provided with a new and interesting experience.

Abstract: An erasing device to erase an image displayed on a display apparatus, the erasing device including: a housing; a generator to generate an electromagnetic field so that the electromagnetic field is emitted from each of a plurality of portions of a tip of the housing; and a controller to control the generator to generate the electromagnetic field when the tip touches a surface of the display apparatus so that the display apparatus detecting the electromagnetic field erases an image within a preset image deletion region with a predetermined area based on a position on the surface touched by the tip, wherein the generator adjusts output of the electromagnetic field from each portion of the tip based on whether each portion of the tip touches the surface so that the display apparatus adjusts the area of the image deletion region based on the portion of the tip touched by the surface.

Abstract: An input apparatus is provided. The input apparatus includes a communicator configured to receive a signal from a pointing apparatus, and a controller configured to control to display the pointer on a first position of the display when a start signal is received from the pointing apparatus, and when sensed position information of the pointing apparatus is received from the pointing apparatus, the controller controls to display the pointer on a second position of the display, which corresponds to the received position information of the pointing apparatus.

Abstract: An electronic apparatus, control method thereof, remote control apparatus that controls the electronic apparatus, and control method thereof. The remote control apparatus includes a communication unit which communicates with the electronic apparatus; a user input unit which receives a user button selection indicating an input button; a sensing unit which senses movement of the remote control apparatus; and a control unit which controls the communication unit to transmit information about the user button selection to perform a function corresponding to the input button if the remote control apparatus is in a button input mode, and to transmit information about the movement of the remote control apparatus to the electronic apparatus to control the electronic apparatus by the movement if the remote control apparatus is in a motion recognition mode. Accordingly, controlling a game or a multimedia content is easier, and the user is provided with a new and interesting experience.

Abstract: A pointing device and a display apparatus applying the same are provided. The pointing device corrects an error that occurs in a boundary between block in calculating a current location of the pointing device and calculates the current location. Accordingly, an error occurring in a boundary between blocks in calculating a current location of the pointing device is prevented.

Abstract: A Fresnel lens and a pyroelectricity sensor module are provided. The Fresnel lens includes unit lens groups having different refractive indexes, and each of the unit lens groups includes unit lenses. Between two unit lenses of the same unit lens group at least one unit lens included in a different lens group is arranged. The pyroelectricity sensor module includes a Fresnel lens which condenses infrared light; a detecting sensor disposed to receive the condensed infrared light and detect the infrared light; and a signal processing board on which the detecting sensor is mounted and configured to control an output signal of the detecting sensor. The Fresnel lens includes unit lens groups having different refractive indexes, and each of the unit lens groups includes unit lenses, and between two unit lenses of the same unit lens group, at least one unit lens included in a different lens group is arranged.

Abstract: A display apparatus, an input apparatus, and a method for compensating coordinates using the same. A method for compensating coordinates using a display apparatus includes receiving movement information from an input apparatus, calculating a coordinate value based on the movement information, and displaying a cursor on the calculated coordinate value. When a button selection command is received from the input apparatus, replacing a coordinate value calculated after receiving the button selection command with a coordinate value of a stable position calculated before receiving the button selection command, and displaying the cursor on the replaced coordinate value, and manipulating an item on which the cursor is located according to the button selection command. Accordingly, the user may locate a cursor on the location that the user wants and execute a display item.

Abstract: A multi-touch decision apparatus, method, and medium are provided. The apparatus includes a sensor to sense an object contacting a specific position corresponding to one among a plurality of sensing channels arranged in a predetermined array, a detector to detect at least one of information about signal strength of the sensing channel in which the object is sensed and information about the number of sensing channels having a signal strength exceeding a first threshold, and a controller to determine whether a single touch or a multi touch has been sensed based on the detected information.

Abstract: A pointing device, a display apparatus and a pointing system, and a location data generation method and a display method using the same are provided. The pointing device includes a sensor that detects signals, a storage unit which stores a signal pattern and a controller which generates location data corresponding to a time at which a signal is detected. Using the detected signals, it is possible to more precisely determine a location of the pointing device on a display apparatus, and to minimize errors caused by delays that may occur when the pointing device is wirelessly connected to the display apparatus.

Abstract: An image processing apparatus and a controlling method of the same are provided. The method includes displaying a first screen corresponding to a first application; displaying a second screen corresponding to a second application above the first screen such that the second screen overlaps at least a portion of the first screen; and displaying at least a portion of the second screen that overlaps the portion of the first screen, while controlling the first application.

Abstract: An image processing apparatus and a controlling method of the same are provided. The method includes displaying a first screen corresponding to a first application; displaying a second screen corresponding to a second application above the first screen such that the second screen overlaps at least a portion of the first screen; and displaying at least a portion of the second screen that overlaps the portion of the first screen, while controlling the first application.