Abstract:
A sensor network mode for obtaining the image and a method for obtaining and transmitting the image by using the same are provided to discriminate the change of the sensing data with reference to the image at the remote central collecting center. Sensors sense the circumferential environmental information. A camera module photographs and compresses the circumferential environmental image. An FIFO(First-Input First-Output) storing chip(120) stores temporarily the compressed image obtained by the camera module. A wireless transmission/reception module(170) transmits and receives the data. A control member transmits the photograph command to the camera module according to the change of sensing data from the sensors and transmits the sensing data to a remote central collecting device through the wireless transmission/receiving module. The control member receives the compression image from the FIFO storing chip after the lapse of the predetermined time, deletes or transmits the compression image to the central collecting device according to the instruction from the central collecting device.
Abstract:
An interface definition language structure between an embedded device and a host server, and a source generator using the same are provided to offer an XML(eXtensible Markup Language)-based standard interface definition language capable of defining an interface message type for a communication protocol/service and a service call between heterogeneous devices such as the host server and the embedded device. A source generator setting unit includes comment, and definition of a data type interchanged between a host server and an embedded device. A service mapping setting unit includes mapping information for calling a service providing function for the host server and the embedded device. A service defining unit defines individual service to be provided by the host server and the embedded device. The source generator setting unit includes a general option element, a protocol transceiving message generation option element, and a data type definition element. The service mapping setting unit includes inbound and outbound service mapping elements. The service defining unit includes inbound and outbound service elements.
Abstract:
An intelligent service method in a USS(Ubiquitous Smart Space) and a terminal are provided to enable a ubiquitous mobile object device to search peripheral resources as sharing intelligent resources equivalent to a user's preference and requirements. Context information is collected in a USS as a user's request is inputted(S110,S120). An optimal communication environment is set by using the collected context information(S130,S150). Optimal resources are configured as virtual resources under the communication environment to carry out a ubiquitous service(S160). When the optimal communication environment is set, a resource map is configured by forming resources collected according to the user's intention, preference, and the context information as optimal resources(S140).
Abstract:
A media access method based on probability supporting priority and a computer-readable medium recording a program for implementing the same are provided to calculate media access probability by using a sampling time and a beacon interval or calculate subdivided media access probability on the basis of node identification information to add priority to data, thereby reducing collision possibility, reducing power consumption, and preventing the transmission delay of data with higher priority. A media access method based on probability supporting priority comprises the following steps of: setting each parameter for CSMA/CA(Carrier Sense Multiple Access/Collision Avoidance)(S210); setting the priority of media access on the basis of a sampling time and a beacon interval(S220,S230); performing random backoff and CCA(Clear Channel Assignment)(S250,S260); updating the parameter when a medium is not used and determining whether data transmission is appropriate(S290); and performing the transmission of data on the basis of the priority when it is determined that the data transmission is appropriate(S300).