Patents Assigned to NEC Communication Systems, Ltd.
-
Patent number: 11510130Abstract: A car-loaded communication apparatus comprises: an acquisition part; and a selection part. The acquisition part acquires car information related to a state of a car in which a communication network is constructed inside, or an environment in which the car is placed. The selection part selects a communication route of a flow accommodating a transmission packet(s) from a plurality of communication routes included in the communication network, based on: the car information; and communication route information related to a communication route(s) included in the communication network.Type: GrantFiled: April 24, 2019Date of Patent: November 22, 2022Assignee: NEC COMMUNICATION SYSTEMS, LTD.Inventors: Takumi Nomura, Tetsuji Kawatsu, Katsuyuki Akizuki, Yuji Harada, Akira Matsumoto, Yuki Baba
-
Publication number: 20220252443Abstract: A volume measurement apparatus comprises: a point group conversion part converting depth information from a depth sensor into point group data; a raw material heap detection part detecting a point group related to a raw material heap from the point group data, using repose angle information; and a raw material heap volume calculation part that calculates a volume of the raw material heap non-occlusion part based on the point group related to the raw material heap; estimates a volume of the raw material heap occlusion part in the raw material heap, using at least the point group related to the raw material heap; and calculates a volume of the raw material heap, which is a sum of the calculated volume of the raw material heap non-occlusion part and the estimated volume of the raw material heap occlusion part.Type: ApplicationFiled: November 20, 2019Publication date: August 11, 2022Applicant: NEC Communication Systems, Ltd.Inventors: Hiroki YOKOTA, Masanori TAKAOKA, Noriyuki AOKI, Kenji KONO
-
Patent number: 11361547Abstract: An object detection apparatus comprising: an input part configured to input video data, an extraction part configured to extract image data from the video data, and a determination part configured to determine whether or not the image data includes an object, wherein the determination part is configured to: set a plurality of regions in a learning image data such that the object appearing in the learning image data extracted from a learning video data captured in advance extends over at least the plurality of regions, assign a learning teach label to each of the regions set, and determine whether or not the image data includes the object by using a prediction model generated by utilizing the learning teach label assigned to each of the regions set.Type: GrantFiled: December 5, 2018Date of Patent: June 14, 2022Assignee: NEC COMMUNICATION SYSTEMS, LTD.Inventors: Noriyuki Aoki, Masanori Takaoka, Tetsuya Ito, Hiroki Yokota
-
Publication number: 20220058826Abstract: Provided is an article position management apparatus that a receiver receives image data from a camera apparatus and that identifies a position of an article, based on an article marker attached to an article and a reference point marker whose coordinate information in an absolute coordinate system in a field is set in advance, the article marker and the reference point marker being included in the image data, when the camera apparatus is a mobile camera apparatus, and identifies the position of the article, based on the article marker included in the image, when the camera apparatus is a fixed camera apparatus.Type: ApplicationFiled: December 26, 2019Publication date: February 24, 2022Applicant: NEC COMMUNICATION SYSTEMS, LTD.Inventors: Takahiro HASEGAWA, Masahito IWAI, Kenichi ABE, Tetsuya ITO, Chikashi ITO
-
IN-VEHICLE CONTROL APPARATUS, IN-VEHICLE NETWORK DESIGN APPARATUS, COMMUNICATION METHOD, AND PROGRAM
Publication number: 20210400452Abstract: An in-vehicle control apparatus controls a plurality of repeaters included in an in-vehicle network assembled in a vehicle, based on a control scenario(s) associated with states of the vehicle and control contents, each of which is set in a corresponding one of the plurality of repeaters.Type: ApplicationFiled: January 9, 2020Publication date: December 23, 2021Applicant: NEC Communication Systems, Ltd.Inventors: Yuki BABA, Akira MATSUMOTO, Tetsuya ITO, Chikashi ITO, Tetsuji KAWATSU, Takurn NOMURA, Katsuyuki AKIZUKI, Yuji HARADA -
Publication number: 20210312660Abstract: Article position estimation system comprises: article movement recognition part; reference point recognition part; position information generation part; and article position estimation part. Article movement recognition part generates article movement information including time point when article is taken out by mobile body or time point when article placement is completed by mobile body. Reference point recognition part recognizes reference point and generates reference point recognition information including identification information according to recognized reference point, reference point recognition time point, and information related to recognized reference point. Position information generation part generates information related to position of mobile body at reference point recognition time point based on reference point recognition information.Type: ApplicationFiled: August 8, 2019Publication date: October 7, 2021Applicant: NEC COMMUNICATION SYSTEMS, LTD.Inventors: Takahiro HASEGAWA, Masahito IWAI, Kenichi ABE, Yuiebiro EZURE, Tetsuya ITO
-
Publication number: 20210112482Abstract: A car-loaded communication apparatus comprises: an acquisition part; and a selection part. The acquisition part acquires car information related to a state of a car in which a communication network is constructed inside, or an environment in which the car is placed. The selection part selects a communication route of a flow accommodating a transmission packet(s) from a plurality of communication routes included in the communication network, based on: the car information; and communication route information related to a communication route(s) included in the communication network.Type: ApplicationFiled: April 24, 2019Publication date: April 15, 2021Applicant: NEC COMMUNICATION SYSTEMS, LTD.Inventors: Takumi NOMURA, Tetsuji KAWATSU, Katsuyuki AKIZUKI, Yuji HARADA, Akira MATSUMOTO, Yuki BABA
-
Publication number: 20200394415Abstract: An object detection apparatus comprising: an input part configured to input video data, an extraction part configured to extract image data from the video data, and a determination part configured to determine whether or not the image data includes an object, wherein the determination part is configured to: set a plurality of regions in a learning image data such that the object appearing in the learning image data extracted from a learning video data captured in advance extends over at least the plurality of regions, assign a learning teach label to each of the regions set, and determine whether or not the image data includes the object by using a prediction model generated by utilizing the learning teach label assigned to each of the regions set.Type: ApplicationFiled: December 5, 2018Publication date: December 17, 2020Applicant: NEC COMMUNICATION SYSTEMS, LTD.Inventors: Noriyuki AOKI, Masanori TAKAOKA, Tetsuya ITO, Hiroki YOKOTA
-
Publication number: 20200342758Abstract: A drive assistance device includes: a collection unit that collects, from a sensor, own-vehicle-state-information representing a state related to a movement of an own vehicle and a position of the own vehicle; a communication unit that transmits the own-vehicle-state-information to another vehicle, and also receiving another-vehicle-state-information representing a state related to a movement of the another vehicle and a position of the another vehicle, from the another vehicle; a determination unit that determines whether a problem occurs in relation to the another vehicle, based on the another-vehicle-state-information being received; and a generation unit that generates, when the determination unit determines that the problem occurs in relation to the another vehicle, improvement operation information representing an operation of the own vehicle capable of improving the problem related to the another vehicle, based on the own-vehicle-state-information and the another-vehicle-state-information.Type: ApplicationFiled: December 19, 2018Publication date: October 29, 2020Applicant: NEC COMMUNICATION SYSTEMS, LTD.Inventors: Yuki BABA, Akira MATSUMOTO, Tetsuya ITO, Chikashi ITO
-
Publication number: 20200125355Abstract: A software update device includes a communication unit connected with an electronic device that executes software, and a wake-up receiving unit. When the wake-up receiving unit receives a wake-up request from a wireless access point registered in advance, the wake-up receiving unit allows the communication unit to transition from a sleep state to a wake-up state. When the communication unit transitioned to the wake-up state, the communication unit initiates wireless communication with an external device, and updates the software of the electronic device by update software received from the external device.Type: ApplicationFiled: June 11, 2018Publication date: April 23, 2020Applicant: NEC COMMUNICATION SYSTEMS, LTD.Inventor: Stefan AUST
-
Patent number: 10356844Abstract: A communication device includes a wireless communication unit, an in-transmission information generating unit, and a neighboring signal presence information generating unit. The wireless communication unit transmits and receives wireless frames via an antenna. The in-transmission information generating unit generates in-transmission information representing whether or not a wireless frame is being transmitted from the antenna. The neighboring signal presence information generating unit generates neighboring signal presence information representing whether or not a signal of a predetermined level or higher is present on a wireless channel that is the same as a wireless channel of the wireless frame.Type: GrantFiled: August 3, 2015Date of Patent: July 16, 2019Assignee: NEC Communication Systems Ltd.Inventors: Akira Matsumoto, Peng Shao, Yuki Baba
-
Patent number: 10334628Abstract: A transmitter generates a header frame having a frame length indicating the beginning of data to be transmitted, data frames having frame lengths representing the data to be transmitted, and an end frame having a frame length indicating the end of the data to be transmitted. Then, for all of the header frame, data frames and end frame, the transmitter executes transmitting the kth frame when the wireless communication space is available, thereby transmitting the header frame, data frames and end frame, one after another, in accordance with the CSMA/CA scheme.Type: GrantFiled: May 2, 2018Date of Patent: June 25, 2019Assignees: NEC COMMUNICATION SYSTEMS, LTD., A SCHOOL CORPORATION KANSAI UNIVERSITY, ADVANCED TELECOMMUNICATIONS RESEARCH INSTITUTE INTERNATIONALInventors: Tetsuya Ito, Yukihiro Hara, Masahito Iwai, Hiroyuki Yomo, Takatoshi Kimura, Akio Hasegawa
-
Patent number: 10313974Abstract: A base station includes a wakeup signal transmission part transmitting transmission signal information to a wireless terminal by wireless communication. The transmission signal information includes a wakeup signal starting a given function included by the wireless terminal. The wakeup signal transmission part transmits the transmission signal information including connection information in addition to the wakeup signal to the wireless terminal. The connection information is information for causing the wireless terminal of a destination of transmission of the wakeup signal to connect by wireless communication using the given function.Type: GrantFiled: September 5, 2014Date of Patent: June 4, 2019Assignees: NEC COMMUNICATION SYSTEMS, LTD., NEC CORPORATIONInventors: Yukihiro Hara, Yohei Miyama, Tomonori Kumagai, Shinji Masuda, Kenki Takagi
-
Patent number: 10244558Abstract: A wireless communication terminal has: a wireless module part which transmits a radio frame signal; a transmission loss information detection part which detects transmission loss information representing whether or not the radio frame signal transmitted by the wireless module part has reached a transmission destination; a collision information detection part which detects collision information representing an aspect of collision between the radio frame signal transmitted by the wireless module part and another radio frame signal; and a transmission control part which controls a transmission process executed by the wireless module part, on a basis of the transmission loss information and the collision information.Type: GrantFiled: August 14, 2014Date of Patent: March 26, 2019Assignee: NEC Communication Systems, Ltd.Inventors: Yuki Baba, Akira Matsumoto, Peng Shao
-
Patent number: 10194392Abstract: When a terminal device initiates a wireless communication when it has not established a wireless link between itself and another wireless device, it transmits, as a management frames in active scanning, a plurality of activation probe requests having frame lengths representing an identifier of a wireless base station to which connection is being made and which is intended to transition from sleep mode to operating mode. Then, the wireless base station receives the plurality of activation probe requests transmitted by the terminal device as management frames in active scanning in a wireless LAN, and, when a plurality of dummy network identifiers detected based on the received plurality of activation probe requests represent the identifier of its own, transitions from sleep mode to operating mode.Type: GrantFiled: August 21, 2015Date of Patent: January 29, 2019Assignees: ADVANCED TELECOMMUNICATIONS RESERACH INSTITUTE INTERNATIONAL, NEC COMMUNICATION SYSTEMS, LTD.Inventors: Masahito Iwai, Yukihiro Hara, Tetsuya Ito, Takatoshi Kimura, Akio Hasegawa
-
Patent number: 10165603Abstract: A transmission part transmits a packet by radio. A power detection part performs, at a given cycle, sampling of power of a spatial radio signal in a packet transmission period during which the transmission part transmits the packet. A collision detection part calculates, as an index value, at least one of the average value and the degree of variation of power of the spatial radio signal in the packet transmission period on the basis of sampled data obtained in the sampling by the power detection part. The collision detection part also determines a reference value on the basis of transmission power of the packet. The collision detection part detects whether or not collision of the packet is present by comparing the index value with the reference value.Type: GrantFiled: September 5, 2014Date of Patent: December 25, 2018Assignee: NEC Communication Systems, Ltd.Inventors: Peng Shao, Akira Matsumoto, Ikumi Wada, Yuki Baba
-
Patent number: 9999075Abstract: A transmitter generates a header frame having a frame length indicating the beginning of data to be transmitted, data frames having frame lengths representing the data to be transmitted, and an end frame having a frame length indicating the end of the data to be transmitted. Then, for all of the header frame, data frames and end frame, the transmitter executes transmitting the kth frame when the wireless communication space is available, thereby transmitting the header frame, data frames and end frame, one after another, in accordance with the CSMA/CA scheme.Type: GrantFiled: September 15, 2015Date of Patent: June 12, 2018Assignees: NEC COMMUNICATION SYSTEMS, LTD., A SCHOOL CORPORATION KANSAI UNIVERSITY, ADVANCED TELECOMMUNICATIONS RESEARCH INSTITUTE INTInventors: Tetsuya Ito, Yukihiro Hara, Masahito Iwai, Hiroyuki Yomo, Takatoshi Kimura, Akio Hasegawa
-
Patent number: 9989939Abstract: A wireless device (1) searches a database that stores positional information of the wireless device (1), a device (2-4) and control identifiers for controlling the devices (2-4) in an associated manner, acquires a device (2-4) located near the wireless device (1) and a control identifier for controlling the device (2-4) based on the positional information of the wireless device (1), and, based on the device (2-4) and the control identifier for controlling the device (2-4) that have been acquired, determines a controlled device (at least one of the devices (2-4)) and generates a control identifier for the controlled device. The wireless device (1) transmits, by wireless communication, the generated controlled identifier to a receiver mounted on the controlled device to control the controlled device.Type: GrantFiled: March 26, 2013Date of Patent: June 5, 2018Assignees: NEC COMMUNICATION SYSTEMS, LTD., A SCHOOL CORPORATION KANSAI UNIVERSITY, ADVANCED TELECOMMUNICATIONS RESEARCH INSTITUTE INTInventors: Tetsuya Ito, Yukihiro Hara, Masahito Iwai, Yuma Asada, Yuta Okamoto, Shota Kakibuti, Ryou Nagase, Shohei Fukayama, Hironori Fukui, Noboru Miyamoto, Hiroyuki Yomo, Takatoshi Kimura, Suhua Tang, Akio Hasegawa
-
Patent number: 9973247Abstract: The solution of the present invention is a precoding that allows an optimal use of multiple-antennas in a MIMO system. The precoding uses codebooks that are optimized for long-range wireless transmissions. A modified Kerdock codebook {wkmi} allows further improvement of the precoding gain. The modified Kerdock codebook {wkmi} contains new codewords wkmi that have been modified in order to further improve the transmit bit error rate (BER). The modified codebook {wkmi} allows a precoding gain that is between 2-3 dB. The present invention improves the transmit bit error rate (BER) of a wireless system. It allows a longer range in outdoor MIMO systems. Less signal outage is the result which allows that wireless signals can be transmitted over several kilometers.Type: GrantFiled: May 23, 2014Date of Patent: May 15, 2018Assignee: NEC Communication Systems, Ltd.Inventor: Stefan Aust
-
Publication number: 20170231030Abstract: A communication device includes a wireless communication unit, an in-transmission information generating unit, and a neighboring signal presence information generating unit. The wireless communication unit transmits and receives wireless frames via an antenna. The in-transmission information generating unit generates in-transmission information representing whether or not a wireless frame is being transmitted from the antenna. The neighboring signal presence information generating unit generates neighboring signal presence information representing whether or not a signal of a predetermined level or higher is present on a wireless channel that is the same as a wireless channel of the wireless frame.Type: ApplicationFiled: August 3, 2015Publication date: August 10, 2017Applicant: NEC Communication Systems Ltd.Inventors: Akira MATSUMOTO, Peng SHAO, Yuki BABA