Abstract:
An apparatus and method of determining a number of data transmissions in a sensor network are provided. More particularly, an apparatus for determining a number of data transmissions preferably includes an interest zone detector for detecting an interest zone based on a user query, a zone determination unit for determining whether the interest zone is overlapped with a sensing zone, a zone calculator for calculating an overlap amount when the interest zone is overlapped with the sensing zone, and a transmission number determination unit for determining a number of data transmissions according to the overlap amount.
Abstract:
An apparatus and method for testing a ubiquitous service or a ubiquitous device using a uniform object model are provided. Because a virtual ubiquitous environment is constructed with devices, services, users, layouts, and the like, physical construction of the ubiquitous environment to test services or devices is not needed. Therefore, the effectiveness of the ubiquitous device or service can be confirmed without requiring a ubiquitous environment to be physically constructed. Additionally, time or cost of constructing a ubiquitous environment can be reduced. Because a variety of environments can be easily constructed through the test of devices or services, the performances of the devices or services can also be improved.
Abstract:
A sensor network system and method for establishing a data transmission path are is disclosed. The method for establishing a data transmission path of a sink node and the network system which includes a plurality of nodes including the sink node, includes a) requesting nodes on a previously established data transmission path to give their adjacent node information, b) receiving the adjacent node information, c) retrieving adjacent nodes as the sink node moves, and d) reestablishing the data transmission path through the result of retrieval and the adjacent node information. Since the data transmission path isreestablished without flooding, it is possible to reduce energy of the nodes. Also, the method for establishing a data transmission path can be applied to any routing protocols without additional conditions.
Abstract:
A method and apparatus for performing an automatic wireless connection with a second digital device by a first digital device is provided. The method includes acquiring, by the first input device, random information used for the wireless connection; checking a status of a Wireless Local Area Network (WLAN); storing the checked status; setting the WLAN to an Ad-hoc mode; setting a Service Set Identifier (SSID) of the WLAN using the random information; setting a security key of the WLAN using the random information; and setting an Internet Protocol (IP) address of the WLAN using the random information.
Abstract:
A projector control system includes a location measurement unit which measures location information of a projector; a projection information unit which generates projection information using the location information; a communication unit which transmits the projection information to the projector; and an image control unit which controls the projector to project an image according to the projection information.
Abstract:
A presentation apparatus includes: a communication connection establishing unit establishing a communication connection with a plurality of receiving terminals and a source terminal, the source terminal having a token corresponding to an authority of controlling a presentation; a presentation data relay unit receiving presentation data from the source terminal, broadcasting a presentation image to the plurality of receiving terminals to display the presentation image of the received presentation data on each screen of the plurality of receiving terminals, and broadcasting voice information to the source terminal and the plurality of receiving terminals to output, from each terminal, the voice information being inputted from any one of the source terminal and the plurality of receiving terminals; and a presentation control unit controlling a transmission/reception of the presentation image and the voice information, and controlling a receiving terminal requesting the token to obtain the token.
Abstract:
An apparatus and a method support bidirectional pairing between devices. A connectable peripheral device is discovered. A list of discovered connectable peripheral devices is displayed. When a peripheral device is selected from the displayed list of the discovered connectable peripheral devices, an indicator operation request message for operating an indicator of the selected peripheral device is generated and transmitted to the selected device. The selected peripheral device operates the indicator according to the indicator operation request message to indicate a connection request from the device.
Abstract:
A method for printing a document of a mobile terminal without a separate printer setup is provided. The method includes performing a wireless auto-connection between a mobile terminal and a printer located near the mobile terminal, and when the mobile terminal transmits a document to be printed to the printer, the printer finds a computer capable of outputting the document, transmits the document to the computer, and prints the document in response to a print instruction received from the computer. Accordingly, a user can print various documents stored in the mobile terminal wherever a printer is located, even without information of the printer.
Abstract:
A system and method for saving sensor power consumption based on context information on a wireless sensor network are provided. Basic context information is received from inside and outside of a network system including at least one sensor, wherein context information based on the basic context information is determined by inference, a group of expected services corresponding to the context information is determined, a sensor operation mode according to the group of expected services is determined, and control data is transmitted to the sensor according to the sensor operation mode. Accordingly, a sensor operation mode is adaptively determined according to changes of context information so that power consumption of a sensor can be saved.
Abstract:
A network device driver includes a fetching/hooking module to fetch/hook hardware data and/or a hardware event of the communication terminal; a packet assembly module to packetize the hardware data and/or the hardware event; a packet release module to recover the packetized hardware data and/or the hardware event, which are/is received from another terminal connected with the communication terminal via a wired/wireless communication network; and a transmission module to receive/transmit the packetized hardware data and/or the hardware event from/to another communication terminal.