Abstract: A video transmitting and receiving method between docked terminals and docking system using the same are disclosed. The video transmitting and receiving method between docked terminals includes determining whether or not the first terminal is connected to the second terminal through an HDMI interface, receiving by the first terminal information on the second terminal, when it is determined that the first terminal is connected to the second terminal through the HDMI interface, providing by the first terminal video to the second terminal, based on information on the second terminal, and activating by the second terminal devices related to displaying of the video, when it is determined that the video is received from the first terminal. This method grants maximum authority regarding the HDMI interface itself, minimizing operational delay and error.

Abstract: A sleep state synchronization method between docked terminals and docking system using the same is disclosed. The state synchronization method between docked terminals includes determining whether or not a first terminal is docked on a second terminal, turning off signal transmitted to a TMDS data line when it is determined that the first terminal is not docked on the second terminal, and the entering by the second terminal into sleep mode. Accordingly, the docked terminals are able to enter into sleep mode together, enabling interlocked operations of the docked terminals instead of operating independently, which would prevent confusion to users when using the docked terminals. In addition, by the aforementioned method, it is unnecessary to make settings for each docked terminal separately, and it is possible to enter into sleep mode easily using TMDS signal of a HDMI interface without going through complex algorithms.

Abstract: A selective data processing method between docked terminals, and a selective data processing system using the same are provided. The selective data processing method includes generating a virtual driver, transmitting a first data generated from a device of a first terminal, transmitting a second data generated from a device of a second terminal to a virtual driver and selecting at least one of the first data and the second data, and transmitting the selected at least one of the first data and the second data to an upper layer of layers where the same driver and the virtual driver reside, and enabling the transmitted at least one of the first data and the second data to be processed.

Abstract: A state synchronization method between docked terminals and docking system using the same is disclosed. The state synchronization method includes entering by the first terminal into sleep mode operating as a USB host, and entering by the second terminal into sleep mode operating as a USB client; providing by the first terminal a wake up event to the second terminal through a USB interface, when the wake up even occurs by the first terminal; providing by the first terminal a signal through the HDMI interface, and then waiting to be re-connected; and attempting by the second terminal to be re-connected to the first terminal based on the wake up event provided from the first terminal. By this method, it is possible to transmit the wake up event to the other terminal even when a portion of the docked terminals is woken up, enabling both terminals to perform interlocked operations.