Patents Assigned to NEC Communications Systems Ltd.
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Publication number: 20250040518Abstract: There is provided a health condition determination apparatus including: a behavior data acquisition part that acquires behavior data indicating a behavior of an animal acquired by executing at least one of monitoring and sensing on the animal; a behavior data accumulation part that accumulates the behavior data; and a health condition estimation part that estimates a health condition of the animal by using the behavior data.Type: ApplicationFiled: December 16, 2022Publication date: February 6, 2025Applicant: NEC Communication Systems, Ltd.Inventors: Masakazu KANEDA, Kenichi ABE, Momo SUTO, Chikashi ITO, Tetsuya ITO, Akira MATSUMOTO, Norihiko KAMATA, Satoki UENO
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Publication number: 20250021917Abstract: An evaluation apparatus includes: an evaluation method acquisition part configured to acquire evaluation method data from an evaluation method provision apparatus; an evaluation criteria creation part configured to create evaluation criteria information for evaluating collected information that integrates data collected from a field management system that manages field information based on the evaluation method data; an evaluation processing part configured to evaluate the collected information based on the evaluation criteria information and create an evaluation result.Type: ApplicationFiled: December 16, 2022Publication date: January 16, 2025Applicant: NEC Communication Systems, Ltd.Inventors: Akira MATSUMOTO, Momo Suto, Kenichi Abe, Chikashi Ito, Tetsuya Ito, Norihiko Kamata, Masakazu Kaneda, Satoki Ueno
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Patent number: 12184436Abstract: There is provided a network control apparatus that realizes an in-vehicle network with low power consumption. The network control apparatus comprises a vehicle state acquisition part that acquires the state of a vehicle; a control profile acquisition part that acquires a control profile, according to the acquired vehicle state, from one or more control profiles including settings for controlling equipment connected to an in-vehicle network; and a control part that controls equipment within the in-vehicle network on the basis of the acquired control profile.Type: GrantFiled: May 6, 2021Date of Patent: December 31, 2024Assignee: NEC Communication Systems, LTD.Inventors: Akira Matsumoto, Yuki Baba, Katsuyuki Akizuki, Yuji Harada, Tetsuji Kawatsu
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Publication number: 20240428419Abstract: An image processing apparatus (100) includes: an acquisition unit (102) that acquires a plurality of images acquired by photographing a same location at different timing; a selection unit (104) that compares at least two of the plurality of images, and selects a target region being a region where a difference between the two images satisfies a criterion; and a processing unit (106) that performs average processing of averaging the target region included in each of the at least two images.Type: ApplicationFiled: September 13, 2021Publication date: December 26, 2024Applicants: NEC Corporation, NEC Communication Systems, Ltd.Inventors: Yuji Tahara, Naoki Saikusa, Kenji Inamoto, Kana Nishiyama, Osamu Honda
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Patent number: 12080027Abstract: 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: GrantFiled: December 26, 2019Date of Patent: September 3, 2024Assignee: NEC Communication Systems, LTD.Inventors: Takahiro Hasegawa, Masahito Iwai, Kenichi Abe, Tetsuya Ito, Chikashi Ito
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Patent number: 12018969Abstract: 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: GrantFiled: November 20, 2019Date of Patent: June 25, 2024Assignee: NEC Communication Systems, LTD.Inventors: Hiroki Yokota, Masanori Takaoka, Noriyuki Aoki, Kenji Kono
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Patent number: 11995865Abstract: 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: GrantFiled: August 8, 2019Date of Patent: May 28, 2024Assignee: NEC Communication Systems, LTD.Inventors: Takahiro Hasegawa, Masahito Iwai, Kenichi Abe, Yuichiro Ezure, Tetsuya Ito
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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
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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 -
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
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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
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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
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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
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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
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Publication number: 20170093470Abstract: 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: ApplicationFiled: May 23, 2014Publication date: March 30, 2017Applicant: NEC Communication Systems, LtdInventor: Stefan AUST
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Patent number: 9554330Abstract: A wireless communication device 81 operates in either a ROD mode or a non-ROD mode. The non-ROD mode sets the state of the device to an active state that the device can perform wireless communication compliant with a first communication scheme with a communication destination device 82. The ROD mode: sets the state of the device to either the active state or a sleep state that the device can receive an activation instruction signal compliant with a second communication scheme requiring smaller electric power to receive a signal than the first communication scheme and cannot perform wireless communication compliant with the first communication scheme with the communication destination device; sets the state of the device to the sleep state when a predetermined sleep condition is satisfied; and sets the state of the device to the active state when the device receives the activation instruction signal.Type: GrantFiled: November 16, 2012Date of Patent: January 24, 2017Assignee: NEC Communication Systems, Ltd.Inventors: Stefan Aust, Toshiyasu Tanaka, Tetsuya Ito
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Publication number: 20170013556Abstract: In order to solve a problem that, when a plurality of wireless communication modes are simultaneously used, interference between the plurality of wireless communication modes cannot be effectively prevented, a wireless communication control device according to the present invention includes a first communication mode control unit performing wireless communication in a first wireless communication mode, and a second communication mode control unit performing wireless communication in a second wireless communication mode. The second communication mode control unit detects a start of wireless communication in the first wireless communication mode, operates not to perform wireless communication in the second wireless communication mode during a wireless communication period in the first wireless communication mode, and operates to perform wireless communication in the second wireless communication mode outside a wireless communication period in the first wireless communication mode.Type: ApplicationFiled: February 23, 2015Publication date: January 12, 2017Applicant: NEC Communication Systems, LtdInventors: Toshiyasu TANAKA, Stefan AUST
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Publication number: 20160366702Abstract: 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: ApplicationFiled: August 14, 2014Publication date: December 15, 2016Applicant: NEC Communication Systems, LtdInventors: Yuki BABA, Akira MATSUMOTO, Peng SHAO
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Patent number: 9521613Abstract: A wireless base station (1) includes a wakeup device (13) and a main device (14). When the main device (14) is in a sleep mode, the wakeup device (13) is connected to the antenna (11). Then, when the wakeup device (13) receives a wakeup signal for activating the wireless base station (1) from a terminal device assigned to the wireless base station (1) in a communication band used for wireless communication with the terminal device and when the information for identifying a wireless base station to be activated contained in the received wakeup signal is identical with the identification information of the wireless base station (1), the wakeup device (13) outputs a driving signal to the main device (14). The main device (14) transitions from the sleep mode to an operating mode in response to the driving signal from the wakeup device (13).Type: GrantFiled: February 16, 2012Date of Patent: December 13, 2016Assignees: Advanced Telecommunications Research Institute International, NEC Communication Systems, LTD.Inventors: Hiroyuki Yomo, Yoshihisa Kondo, Suhua Tang, Sadao Obana, Tetsuya Ito, Akira Matsumoto, Koichi Yoshimura
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Publication number: 20160295512Abstract: 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: ApplicationFiled: September 5, 2014Publication date: October 6, 2016Applicants: NEC Communication Systems, Ltd, NEC CorporationInventors: Yukihiro HARA, Yohei MIYAMA, Tomonori KUMAGAI, Shinji MASUDA, Kenki TAKAGI