Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A communication terminal receives display data for displaying certain data on a screen of a display device and image data of an optical-to-electrical-converted image from another communication terminal via a communication network, includes a storage part storing reception information indicating whether the display data has been received by the communication terminal and arrangement information indicating at least one of a size and a position of the image based on the image data, in a manner of associating with one another; a reception part receiving the display data and the image data; an extraction part extracting, based on the reception information, the corresponding arrangement information from the storage part; and a display control part displaying the image using the image data based on the arrangement information extracted by the extraction part.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A communication terminal receives display data for displaying certain data on a screen of a display device and image data of an optical-to-electrical-converted image from another communication terminal via a communication network, includes a storage part storing reception information indicating whether the display data has been received by the communication terminal and arrangement information indicating at least one of a size and a position of the image based on the image data, in a manner of associating with one another; a reception part receiving the display data and the image data; an extraction part extracting, based on the reception information, the corresponding arrangement information from the storage part; and a display control part displaying the image using the image data based on the arrangement information extracted by the extraction part.

Abstract: A communication terminal receives display data for displaying certain data on a screen of a display device and image data of an optical-to-electrical-converted image from another communication terminal via a communication network, includes a storage part storing reception information indicating whether the display data has been received by the communication terminal and arrangement information indicating at least one of a size and a position of the image based on the image data, in a manner of associating with one another; a reception part receiving the display data and the image data; an extraction part extracting, based on the reception information, the corresponding arrangement information from the storage part; and a display control part displaying the image using the image data based on the arrangement information extracted by the extraction part.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A communication device includes: a receiving unit that receives metainformation indicating an update from an update information providing device to provide information related to the update; a determining unit that determines, on the basis of the received metainformation, whether an update needed for the communication device exists; a notifying unit that notifies, when the update exists, a user of existence of the update; an operation unit that receives, when the update exists, a selection operation as to whether the update is to be executed from the user; and an update processing unit that executes, when the selection operation to execute the update is received by the operation unit, the update on the basis of the received metainformation.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: Disclosed is a data processing apparatus providing a predetermined function by executing a program for the data processing apparatus, including a first storage unit that stores encoded execution starting data for starting execution of the program; a first decode key storage unit that stores a first decode key capable of decoding the encoded execution starting data; a start up unit that obtains the first decode key from the first decode key storage unit when turning on the power is accepted and decodes the encoded execution starting data by the first decode key to start executing the program; and an authentication confirmation unit that sends a request for authentication to an external apparatus after the start up unit starts executing the program and starts providing the predetermined function when obtaining an authentication result indicating the apparatus is authenticated from the external apparatus.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: A transmission terminal transmits video data and display data of a screen shared with another transmission terminal to the other transmission terminal via a predetermined relay apparatus. The transmission terminal includes a storage unit that stores relay apparatus information of the relay apparatus to which the transmission terminal transmits the video data; a receive unit that receives the display data from an external input apparatus connected to the transmission terminal; and a transmitting unit that transmits the display data received by the receive unit to the relay apparatus indicated by the relay apparatus information stored in the storage unit.

Abstract: An authentication system receives encrypted terminal identification information and terminal identification information, from a transmission terminal, and determines whether decrypted identification information decrypted using a terminal public key obtained by the authentication system matches the terminal identification information received from the transmission terminal.