Abstract: A data analysis device includes: a data acquiring unit that acquires a designation of a target field being a field from which relevance is to be extracted, from among fields included in health condition data being information relating to a health condition of an employee, and the health condition data of two or more employees and attendance data being information relating to a work condition; an attribute data generating unit that performs aggregation, and generates attribute data; a model learning unit that learns a model, the model being represented by a polynomial, by using a content of the target field of the health condition data, and a content of the attribute data, of the two or more employees; a related field extracting unit that extracts an attribute field; and a summarizing unit that summarizes and outputs attendance data, based on information on the extracted attribute field.
Type:
Application
Filed:
July 14, 2016
Publication date:
August 9, 2018
Applicants:
NEC Corporation, NEC SOLUTION INNOVATORS, LTD.
Abstract: Provided is a motion picture encoding device that is capable of processing a large number of tasks in a parallel manner without reducing encoding efficiency. A motion picture encoding device 10 is provided with a motion vector determining unit 11 that determines the motion vector of a block to be encoded used for a motion compensation prediction from the motion vectors of adjacent blocks contained in a reference region among blocks adjacent to the block to be encoded contained in the reference region that constructs an image.
Abstract: A method for verifying authenticity of a monitoring signal includes employing a multitude of actuators to impact a physical environment with individual signals, wherein the individual signals originate from the actuators and are directed to the physical environment; observing, via at least one sensor device, the physical environment so as to record the monitoring signal, wherein the monitoring signal represents a combined impact of the individual signals on the physical environment; and comparing the monitoring signal with an expected signal to determine a degree of similarity between the monitoring signal and the expected signal, wherein the expected signal is computed on the basis of one or more predetermined template.
Abstract: A quantization unit for quantizing orthogonal transform coefficients to calculate a coefficient level: calculates the number of value information bits of a significant coefficient level of an orthogonal transform coefficient to be processed in an image block; monitors coefficient levels output from the quantization unit in the image block from beginning to the N-th prior to the target in transmission order, and updates a state variable indicating whether or not at least one of monitored coefficient levels is significant; calculates the number of position information bits of the significant coefficient level of the orthogonal transform coefficient to be processed, based on a position of the orthogonal transform coefficient to be processed and the state variable; and sets the significant coefficient level to 0 in the case where the number of value information bits and the number of position information bits satisfy a predetermined condition.
Abstract: A control apparatus includes: a first control information setting unit configured to set first control information for forwarding packets between predetermined machines in relay apparatuses on a predetermined path on the basis of a first hierarchical address; and a second control information setting unit configured to set, when receiving a packet whose destination address is a second hierarchical address, which is a higher level address than the first hierarchical address, from one of the machines in which the first control information has already been set, via one of the relay apparatuses, second control information for converting a first hierarchical destination address of the packet whose destination address is the second hierarchical address into a first hierarchical address specified in the first control information and forwarding the converted packet, in the relay apparatus.
Abstract: A decrease is realized in network load caused by a change in selection of location registration device or an increase or decrease in the number of installations, on a circuit switching network side. A mobile communication system includes a mobile station, a packet switching station, and a plurality of location registration devices that perform location management of the mobile station. With respect to the mobile station, after one location registration device is already selected from among the plurality of location registration devices, when the mobile station performs location registration, an NRI (Network Resource Identifier) included in a TMSI (Temporary Mobile Station Identifier) is transmitted to the packet switching station. The packet switching station makes a request for location registration with respect to the one location registration device, based on the NRI.
Type:
Grant
Filed:
February 3, 2014
Date of Patent:
August 7, 2018
Assignee:
NEC Corporation
Inventors:
Koji Onishi, Toshiyuki Tamura, Hidenobu Sasaki, Jyunya Okabe
Abstract: To remove only noise components without removing desired signal components, a signal processing apparatus includes a noise decorrelator that removes noise signals having correlation between at least two input signals, in each of which a desired signal and a noise signal coexist, by receiving the at least two input signals from at least two channels, and a residual noise remover that removes residual noise included in an output signal of the noise decorrelator based on a phase difference between the output signal of the noise decorrelator and at least one input signal included in the at least two input signals.
Abstract: An antenna orientation adjustment device (200) include a camera (210), nut runners (220 and 230), and a motion controller (400). The nut runners (220 and 230) can be mounted on an azimuth adjustment bolt (160) and an elevation adjustment bolt (180), respectively. The nut runners (220 and 230) change the orientation of an antenna unit by applying motor power to the azimuth adjustment bolt (160) and the elevation adjustment bolt (180). The motion controller (400) calculates an angle position of the antenna unit (110) where a reception strength is maximum based on an image taken by the camera (210) and a reception strength of radio waves received by the antenna unit (110), and then adjusts the antenna unit (110) to the angle position where the reception strength is maximum by supplying a drive signal to the azimuth adjustment bolt (160) and the elevation adjustment bolt (180).
Abstract: An information system of the present invention includes a plurality of physical nodes each of which processes a packet received from external node(s) according to a processing rule (packet handling operation) that associates a matching rule for identifying a flow and processing content to be applied to a packet that matches the matching rule, and a control apparatus which sets the processing rule in each of the plurality of physical nodes, thereby causing the plurality of physical nodes to operate as virtual nodes on a virtual network(s) usable by the external node(s). The control apparatus includes a first storage unit defining a correspondence relationship between each of the plurality of physical nodes and virtual network(s), and a second storage unit defining a correspondence relationship between each of the external node(s) and virtual node(s) on virtual network(s).
Abstract: A reconfigurable circuit comprising: a first level crossbar switch that has first non-volatile resistive switches; a second level crossbar switch that has second non-volatile resistive switches; and a first wire and third non-volatile resistive switches that are used for redundancy, wherein input wires of the second level crossbar switch are connected to output wires of the first level crossbar switch one-to-one, and input wires of the first level crossbar switch and output wires of the second level crossbar switch are connected to the first wire through the third non-volatile resistive switches.
Abstract: A wireless communication system (100) is disclosed in which UEs (120a-120c) can operate in a cellular mode wherein data is transmitted from one UE to another via one or more access nodes in a cellular network, and at least some UEs (120c) are D2D-UEs which can also operate in a direct communication mode wherein a pair of D2D-UEs transmit data directly from one to the other, wherein D2D-UEs operating in the direct communication mode maintain control signaling connection with the network and periodically change to the cellular mode and send CSI to the network, and the network uses CSI and/or network available geographical location information for D2D-UEs in determining whether to cause D2D-UEs to operate in the direct communication mode or the cellular mode.
Abstract: A multi-bit digital signal that is generated by modulating a baseband signal by a modulation circuit and includes components in a radio frequency band is amplified by switch-mode amplifiers (100-1, 100-2) on a bit-by-bit basis, amplified signals are band-limited by frequency-variable variable band limiting units (201-1, 201-2) and thereafter subjected to voltage-to-current conversion by voltage/current source conversion units (202-1, 202-2) provided with variable capacitances, the signals converted to current are synthesized at a synthesis point X, and a resultant signal is impedance-corrected by an impedance correction unit (203) and output as a transmission signal to an antenna of a load (300). Consequently, the present invention provides a transmitter capable of synthesizing output signals from a plurality of switch-mode amplifiers and transmitting a resultant signal while maintaining an impedance characteristic with respect to a plurality of transmit frequencies without increasing a circuit size.
Abstract: A method for supporting vehicular communication in a cellular-based communication system includes connecting at least one base station and a plurality of vehicles equipped with mobile communication devices. A centralized control entity coordinates packet transmissions of the vehicles. Adjustment of a packet transmission rate is done recursively, where parameters of packet transmission characteristics are measured and the control entity determines, based on the parameters of packet transmission characteristics, an optimal packet transmission rate. The vehicles and/or the control entity transmit packets use the optimal packet transmission rate.
Type:
Grant
Filed:
January 29, 2013
Date of Patent:
August 7, 2018
Assignee:
NEC CORPORATION
Inventors:
Long Le, Nikola Zahariev, Shiqiang Wang
Abstract: A communication system is disclosed in which a home base station operates a home cell and a macro base station operates a macro cell. The home base operates a cell located at least partially within the macro cell. The home base station can obtain information identifying a quantity of home base stations that each operate at least one respective cell that is located at least partially within the macro cell and from this information, and further information identifying resource usage via said home base station, can set a target power for said home base station.
Type:
Grant
Filed:
September 17, 2015
Date of Patent:
August 7, 2018
Assignee:
NEC CORPORATION
Inventors:
Yassin Aden Awad, Chadi Khirallah, Robert Arnott, Motoki Morita
Abstract: A technique that can enhance the effectiveness of traffic offloading is provided. A base station of the present invention includes: a first means for selecting an MME (Mobility Management Entity), based on information included in a message sent from a terminal; and a second means for sending a connection request sent from the terminal to the selected MME, wherein the first means is able to select a virtual MME that operates a function of the MME through a virtual machine, based on the information included in the message.
Abstract: [Problem] To provide a wireless base station, a traffic load-balancing method, and a traffic load-balancing program that make it possible to more reliably avoid backhaul congestion and decreases in wireless-terminal throughput. [Solution] This wireless base station includes the following: a setting unit (14) that sets network load information that indicates the traffic load on a backhaul between the wireless base station and a core network; and an execution unit (15) that, on the basis of the network load information set by the setting unit and network load information received from a neighboring wireless base station, executes a process that balances the traffic load between the wireless base stations.
Abstract: There is provided a moving object detection technique capable of improving accuracy of detecting a moving object from video photographed by a moving camera. A moving object detection apparatus 10A according to an aspect of the present disclosure is provided with: a receiving portion 11 that receives video taken by an image capturing apparatus provided in a mobile body; a first calculation portion 13 that calculates first moving-object scores based on a motion of one or more pixels of image included in the video; a second calculation portion 15 that calculates second moving-object scores based on a background model and the image, wherein the background model is updated based on the image and the motions of the pixels; and a detection portion 16 that detects a moving object from the image based on the first scores and the second scores.
Abstract: To enable the transmission and reception of a super-channel optical signal to continue maintaining the possible transmission capacity without providing a redundant configuration in advance even though a failure occurs in a subcarrier, an optical transmitter 10 of the present invention includes a splitting means 20 for splitting an inputted client signal so as to make frequency efficiency in optical modulation means optimized; optical modulation means 31 to 3N for modulating one of subcarriers having mutually different wavelengths with the client signal output; a multiplexing means 40 for multiplexing the modulated signals and outputting a super-channel optical signal; and a control means 50, in a state where a failure occurs in one of the subcarriers, for making a split client signal output to modulation means corresponding to a subcarrier having no failure and applying a modulation method with a higher frequency efficiency to at least one of the modulation means.
Abstract: A predictive model reception unit 81 receives a predictive model that is learned based on an explained variable and an explanatory variable, indicates a relationship between the explained variable and the explanatory variable, and is represented by a function of the explanatory variable. An optimization unit 82 calculates, for an objective function having the received predictive model as an argument, an objective variable that optimizes the objective function, under a constraint condition.
Abstract: In order to improve accuracy in estimating a transmission line that includes a delay path having a long delay time, the present invention provides a wireless reception device that includes a transmission estimation unit including: a delay profile generation unit that estimates a transmission line from a reference signal portion by using a known reference signal replica, and that calculates a delay profile from a transmission line estimation result; a path detection unit that detects a position of a sample, which is included in the delay profile, as a path position; a delay profile division unit that divides the delay profile based on the path position; and a transmission line calculation unit that calculates a transmission line per path by carrying out averaging to the delay profile per path in the frequency domain, and that combines transmission line calculation results per path.