Patent application number | Description | Published |
20080292012 | MULTIPLE-INPUT MULTIPLE-OUTPUT COMMUNICATION METHOD AND MULTIPLE-INPUT MULTIPLE-OUTPUT COMMUNICATION SYSTEM OF ENABLING THE METHOD - A Multiple-Input Multiple-Output (MIMO) communication system and method. The MIMO communication system includes: an antenna number determination unit to determine a number of active antennas among a plurality of transmitting antennas based on a power of a transmission signal wherein the number of active antennas is at least one and the at least one active antenna transmits the transmission signal; and a beam generator to generate the transmission signal corresponding to the number of active antennas by using channel information wherein the channel information is fed back from each of a plurality of user terminals. | 11-27-2008 |
20100081424 | METHOD AND APPRATUS FOR CONTROLLING SIGNAL TRANSMISSION - A method and apparatus for controlling signal transmission is provided. The method includes determining whether a signal to noise ratio (SNR) between a first base station and a signal receiving node is less than a threshold, and controlling the first base station and a second base station to cooperatively transmit a signal to the signal receiving node in response to the SNR being less than the threshold. Further, the second base station is located in an adjacent cell to a cell containing the first base station. | 04-01-2010 |
20100112937 | DATA TRANSMISSION SYSTEM FOR FORWARDING DATA USING A PLURALITY OF ANTENNAS - A data transmission system transmitting data using a relay is provided. The relay selects a transmission terminal from a plurality of terminals connected to a base station. During a first time slot, the base station transmits base station data to the relay and the transmission terminal transmits terminal data to the relay. The relay transmits the terminal data to the base station and transmits the base station data to the transmission terminal during a second time slot. | 05-06-2010 |
20120032880 | POINTING DEVICE AND DISPLAY APPARATUS HAVING THE SAME - A display apparatus including a pointing device which generates a light beam and projects the light beam on a screen; a camera which detects a trace of the light beam imaged on the screen; and an image processing unit which processes an image corresponding to the trace of the light beam detected by the camera to display the image on the screen. The pointing device includes: a first light source unit which generates and emits a first light beam having a first wavelength range, a second light source unit which generates and emits a second light beam having a second wavelength range different from the first wavelength range, and a switching circuit which selectively applies power to one of the first light source unit and the second light source unit depending on a distance between the screen and the pointing device, so that one of the first light beam of the first wavelength range and the second light beam of the second wavelength range is selectively projected to form the light beam on the screen. | 02-09-2012 |
20120133832 | VIDEO SIGNAL SELECTING METHOD AND VIDEO PROCESSING APPARATUS - A video processing apparatus and a method capable of selecting various video signals are provided. The video processing apparatus includes an input unit which receives a video signal select key value by which a video signal select command to select one of the plurality of video signals is recognized; a storage unit which stores a plurality of video signal names corresponding to the plurality of video signals; and a control unit which sets a first display mode or a second display mode according to the duration of the video signal select key value, the first and second display modes indicating opposite orders in which the video signal names corresponding to the plurality of video signal units are displayed, and displays the video signal names sequentially in the set display mode. Thus, a user can conveniently select the video signal. | 05-31-2012 |
20120289150 | DATA TRANSMISSION SYSTEM FOR FORWARDING DATA USING A PLURALITY OF ANTENNAS - A data transmission system transmitting data using a relay is provided. The relay selects a transmission terminal from a plurality of terminals connected to a base station. During a first time slot, the base station transmits base station data to the relay and the transmission terminal transmits terminal data to the relay. The relay transmits the terminal data to the base station and transmits the base station data to the transmission terminal during a second time slot. | 11-15-2012 |
20120293776 | PROJECTOR AND CONTROL METHOD THEREOF - A projector and method of controlling a projector, the projector including: a projection unit configured to project an image; first and second sensors which are disposed to be centered about the projection unit and configured to detect a motion of an object; and a control unit configured to control the projector if the motion of the object is detected by at least one of the first and the second sensors, wherein an axis of detection of the first sensor intersects an axis of detection of the second sensor. | 11-22-2012 |
20150187325 | DISPLAY SYSTEM, FLEXIBLE REMOTE CONTROLLER, FLEXIBLE DISPLAY APPARATUS, AND CONTROL METHOD THEREOF - A flexible display apparatus is provided. The flexible display apparatus includes a flexible display, a bending driver configured to deform the flexible display, a receiver configured to receive information indicating deformation of a flexible remote controller, and a controller configured to, in response to the receiver receiving the deformation information, control the bending driver to deform the display to a shape corresponding to the deformation of the flexible remote controller. | 07-02-2015 |