Abstract: A data push service method and system are provided. The service data push method includes: providing a device with data push information regarding service data to be pushed to at least one device; and pushing the service data to the device when receiving a data push service request from the at least one device. Accordingly, the server does not need to maintain and manage information of the at least one device.

Abstract: A data push service method and system are provided. The service data push method includes: providing a device with data push information regarding service data to be pushed to at least one device; and pushing the service data to the device when receiving a data push service request from the at least one device. Accordingly, the server does not need to maintain and manage information of the at least one device.

Abstract: A data push service method and system are provided. The service data push method includes: providing a device with data push information regarding service data to be pushed to at least one device; and pushing the service data to the device when receiving a data push service request from the at least one device. Accordingly, the server does not need to maintain and manage information of the at least one device.

Abstract: The present invention relates to a data transmission system having a first information processor and a second information processor connected with each other through a network and having touch screen interfaces; and a pointer that wirelessly sends data to and/or receives data from the first information processor and the second information processor, wherein the first information processor transmits address information of previously stored data to the pointer, the data corresponding to a first touch signal input through the touch screen interface, the pointer stores the address information received from the first information processor and transmits the stored address information to the second information processor, if an address requesting signal is received from the second information processor, and the second information processor receives stored data from the first information processor and stores the received data, the stored data corresponds to the address information received from the pointer.

Abstract: A frame synchronizing apparatus using a memory in which a frame synchronizing algorithm is embodied in an ASIC(application specific integrated circuit) so as to be used in a circuit for synchronizing a frame in framing/deframing method for improving a performance of ATM(asynchronous transfer mode) cell extraction in high-error wireless environment of WATM(wireless asynchronous transfer mode), and such an algorithm can be employed in a circuit for synchronizing the frame in a received data stream.

Abstract: A method of preventing an unauthorized use of a virtual medium that replaces a physical medium, such as a computer stored virtual compact disc (CD) image file utilizing a virtual medium program, such as a virtual CD program, through which the virtual CD image file is read in a reproducible state. An identification of a computer is maintained by the virtual CD program when executing the virtual CD program. The maintained identification is stored in a downloaded virtual CD image file and the maintained identification is compared with the identification in the downloaded virtual CD image file upon being selected to be used, thereby controlling unauthorized use of the downloaded authorized virtual CD image file on another computer. For example, reproduction of a downloaded authorized virtual CD image file through the virtual CD program is interrupted if the two identifications do not match.