摘要:
A router relays sensing data between a field network including at least one sensor node and a plant network including a management system. The routing apparatus manages a routing table in which a next address and an output interface corresponding to an extension destination address of 6 bytes and an input interface are stored and transmits sensing data to another field network or a management system using the routing table.
摘要:
A low-power method for media access control on a semi-linear sensor network with multiple sensor nodes, includes: sensing a channel after waking up from a sleep mode by an arbitrary transmission sensor node that has obtained data; and generating a long preamble including a number of element preambles and sending to a destination sensor node after said channel sensing. This method further includes: sending said data to said destination sensor node after completion of transmission of said long preamble; and identifying duty cycle information of said destination sensor node after completion of transmission of said data and adjusting the number of said element preambles according to said duty cycle information.
摘要:
Provided are a method and apparatus for controlling a shared memory, and a method of accessing the shared memory. The apparatus includes a processing unit configured to process an application program, a user program unit configured to execute a program written by a user based on the application program of the processing unit, a shared memory unit connected to each of the processing unit and the user program unit through a system bus and configured to store data interchanged between the processing unit and the user program unit, and a control unit configured to relay a control signal indicating whether the system bus, by which the data is interchanged between the processing unit and the user program unit, is occupied, and control connection of each of the processing unit and the user program unit with the system bus in response to the control signal. In the apparatus, the processing unit and the user program unit can easily interchange a large amount of messages through the shared memory unit having an abundant memory space.
摘要:
A wakeup-on-demand apparatus includes: a wakeup radio receiver (WRR) receiving a first radio signal to detect an address; and a main radio transceiver (MRT) responding to the first radio signal, transmitting and receiving a second radio signal for data communication, when the detected address coincides with a preset address.
摘要:
A method for analyzing nudity of an image using a body part detection model includes: extracting a skin blob from an image; calculating a first probability value, which indicates a probability of determination on harmfulness of at least one of the image and the skin blob, using a harmfulness detection model; classifying the skin blob as a specific body part using a body part detection model, and calculating a second probability value which indicates a probability of certainty of said classifying; and rating nudity of the image based on the first probability value and the second probability value.
摘要:
Provided are an apparatus and method for blocking an objectionable image on the basis of multimodal and multiscale features. The apparatus includes a multiscale feature analyzer for analyzing multimodal information extracted from image training data to generate multiscale objectionable and non-objectionable features, an objectionability classification model generator for compiling statistics on the generated objectionable and non-objectionable features and performing machine learning to generate multi-level objectionability classification models, an objectionability determiner for analyzing multimodal information extracted from image data input for objectionability determination to extract at least one of multiscale features of the input image, and comparing the extracted feature with at least one of the multi-level objectionability classification models to determine objectionability of the image, and an objectionable image blocker for blocking the input image when it is determined that the image is objectionable.
摘要:
Provided is a method for providing an anonymous public key infrastructure (PKI) in a user terminal. The method includes receiving a real-name certificate from a real-name PKI service domain, requesting an anonymous certificate to an anonymous PKI service domain, and receiving the anonymous certificate from the anonymous PKI service domain. Accordingly, the method can ensure anonymity when a user uses a service by providing the anonymous certificate in association with the PKI-based real-name certificate.
摘要:
Provided are a method and apparatus for connecting a sensor network to a heterogeneous network, in which an external network connected to the sensor network functions as a virtual personal area network (PAN) so that the same PAN address system is used between the sensor network and the external network by using a concept of a ‘virtual PAN’. According to the method and apparatus for connecting the sensor network to the heterogeneous network, a node of the sensor network can efficiently communicate with a node of the external network including the heterogeneous network by assigning the virtual PAN address to the node of the external network including the heterogeneous network without inserting any additional layer into the node of the sensor network.
摘要:
An apparatus for detecting specific human body parts in an image includes: a texture energy analysis unit for analyzing energy distribution in the image and generating texture energy maps; a candidate region-of-interest extraction unit for extracting candidate regions-of-interest for the specific body parts on a given texture energy map by applying a threshold to the given texture energy map, the given texture energy map being selected among the texture energy maps; a candidate mask application unit for performing convolution between candidate masks for the specific body parts and the candidate regions-of-interest and selecting candidate body parts based on results of the convolution; and a body part detection unit for detecting the specific body parts on the image by performing verification on the candidate body parts. The verification is performed by using machine-learning models for the specific body parts.
摘要:
Provided are a gateway apparatus for providing multi-channel functionality in a sensor network, and a method and an apparatus for interfacing using serial peripheral interface (SPI) in the gateway apparatus. The SPI interfacing apparatus is connected to a plurality of wireless transmit/receive units, and receives a data frame via an SPI to output the data frame to a wireless transmit/receive unit, based on information regarding selection of the wireless transmit/receive unit, wherein the information is contained in the data frame. Then, the SPI interfacing unit receives data frames from the wireless transmit/receive units to output the data frames in a predetermined order via an SPI. Thus, the wireless transmit/receive units for providing multi-channel functionality can interface a signal processing unit by using an SPI method.