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公开(公告)号：US20240230843A9
公开(公告)日：2024-07-11
申请号：US18483954
申请日：2023-10-10
申请人： NEC Corporation
发明人： Katsuhiro YUTANI
CPC分类号： G01S7/4802 , G01N21/8851 , G01S17/88
摘要： An optical sensing device includes a first point cloud data acquisition unit for acquiring first point cloud data associated with a first object and a second object that are included in a first region, a region specification unit for specifying a second region associated with the first object in the first region, a second point cloud data acquisition unit for acquiring second point cloud data associated with the first object by emitting second laser light from the light source to a plurality of second positions associated with the second region, based on second laser reflection light being reflection light of the second laser light, and a first abnormality detection unit for detecting abnormality of the first object, by using the second point cloud data.
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公开(公告)号：US20200073196A1
公开(公告)日：2020-03-05
申请号：US16467137
申请日：2017-08-01
申请人： NEC Corporation
发明人： Katsuhiro YUTANI
摘要： A drive unit outputs a modulation signal based on a data signal input from an optical communication apparatus through a pluggable electric connector. An optical modulator outputs an optical signal generated by modulating a light output from a light source based on the modulation signal. A control unit controls a modulation operation of the optical modulator. The control unit outputs a driver signal instructing to start a setting operation to the optical communication apparatus. The optical communication apparatus monitors the modulation operation of the optical modulator in response to the driver signal and performs an operation of correcting the data signal and/or an operation of outputting a control signal representing a control setting for the modulation operation to the control unit based on a monitoring result. The control unit controls the modulation operation of the optical modulator based on the control signal when receiving the control signal.
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3.发明申请公开(公告)号：US20230113890A1
公开(公告)日：2023-04-13
申请号：US17909534
申请日：2021-03-19
申请人： NEC Corporation
发明人： Katsuhiro YUTANI
摘要： In order to provide a vegetation observation device capable of stereographically observing the state of vegetation, this vegetation observation device is provided with: a vegetation model generation means for generating a vegetation model which is a three-dimensional model of a vegetation region, on the basis of laser reflected light generated when a laser beam to be applied to a light irradiation region including the vegetation region is reflected by vegetation in the vegetation region; and a vegetation observation means for observing vegetation in the vegetation region, on the basis of the vegetation model generated by the vegetation model generation means.
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公开(公告)号：US20170170907A1
公开(公告)日：2017-06-15
申请号：US15118349
申请日：2015-02-16
申请人： NEC Corporation
发明人： Katsuhiro YUTANI
IPC分类号： H04B10/532 , H04B10/50 , G02F1/01
CPC分类号： H04B10/532 , G02F1/0123 , G02F1/0136 , G02F2203/07 , H04B10/50572 , H04B10/50575 , H04B2210/075
摘要： This invention provides an optical transmitter that internally compensates for PDL with a high degree of precision and can output high-quality transmission signals. The optical transmitter is provided with the following: a light-outputting means for generating an optical signal; a data-outputting means for outputting a data sequence generated on the basis of information to be transmitted; a driving means for applying, to an optical modulator, a bias voltage with a pilot signal superimposed thereon; the optical modulator, which, upon the application of the bias voltage, modulates the abovementioned optical signal on the basis of the aforementioned data sequence and outputs the modulated signal; and a controlling means for controlling the bias voltage in accordance with the strength of the pilot signal extracted from the modulated signal.
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公开(公告)号：US20210397063A1
公开(公告)日：2021-12-23
申请号：US17462221
申请日：2021-08-31
申请人： NEC Corporation
发明人： Katsuhiro YUTANI
摘要： A drive unit outputs a modulation signal based on a data signal input from an optical communication apparatus through a pluggable electric connector. An optical modulator outputs an optical signal generated by modulating a light output from a light source based on the modulation signal. A control unit controls a modulation operation of the optical modulator. The control unit outputs a driver signal instructing to start a setting operation to the optical communication apparatus. The optical communication apparatus monitors the modulation operation of the optical modulator in response to the driver signal and performs an operation of correcting the data signal and/or an operation of outputting a control signal representing a control setting for the modulation operation to the control unit based on a monitoring result. The control unit controls the modulation operation of the optical modulator based on the control signal when receiving the control signal.
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公开(公告)号：US20210058152A1
公开(公告)日：2021-02-25
申请号：US16964688
申请日：2019-01-24
申请人： NEC Corporation
发明人： Katsuhiro YUTANI
IPC分类号： H04B10/073 , H04B10/40 , H04B10/516
摘要： A method for setting a pluggable optical transceiver, includes: amplifying, with an amplifier, an electrical signal being input to the pluggable optical transceiver from an external device to which the pluggable optical transceiver is mounted, and outputting the amplified electrical signal as a drive signal of an optical modulator; modulating light input from a light source with the optical modulator, based on the drive signal, and outputting the modulated light; monitoring amplitude of the drive signal; and executing a control sequence being set in advance for at least one of the amplifier and the optical modulator when detecting that amplitude of the drive signal exceeds a reference value being set in advance.
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公开(公告)号：US20240193796A1
公开(公告)日：2024-06-13
申请号：US18528447
申请日：2023-12-04
申请人： NEC Corporation
发明人： Katsuhiro YUTANI
CPC分类号： G06T7/251 , G06T7/521 , G06T7/564 , G06T2207/10028
摘要： An acquisition means repeatedly acquires three-dimensional data of a monitoring target surface on a time axis. A deformation detection means detects, based on a plurality of pieces of the three-dimensional data, a first deformation occurring at a first time, and a second deformation occurring at a position different from an occurrence position of the first deformation at a second time being after the first time. A deformation prediction means predicts, based on a detection result by the deformation detection means, that a third deformation may occur in a future at a position different from occurrence positions of the first deformation and the second deformation.
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公开(公告)号：US20220214593A1
公开(公告)日：2022-07-07
申请号：US17703128
申请日：2022-03-24
申请人： NEC Corporation
发明人： Katsuhiro YUTANI
IPC分类号： G02F1/225 , H04B10/50 , H04B10/564 , H04B10/588 , H04B10/25 , H04B10/516
摘要： To autonomously apply a bias voltage to an optical modulator according to phase angle information provided from outside in a pluggable optical module. A pluggable electric connector (11) can communicate a communication data signal and a control signal with an optical communication apparatus (92). An optical signal output unit (13) includes a Mach-Zehnder type optical modulator including a phase modulation area and outputs an optical modulation signal (LS) modulated according to the communication data signal. An optical power control unit (14) can control optical power of the optical modulation signal (LS). A pluggable optical receptor (15) can output the optical modulation signal (LS) to an optical fiber (91). A control unit (12) controls a modulation operation of the optical signal output unit (13) and the bias voltage applied to the phase modulation area.
The control unit (12) determines the bias voltage applied to the phase modulation area according to phase angle information of the control signal (CON1). The optical signal output unit (13) applies the bias voltage determined by the control unit (12) to the phase modulation area.-
9.发明申请公开(公告)号：US20180059502A1
公开(公告)日：2018-03-01
申请号：US15559616
申请日：2016-03-18
申请人： NEC Corporation
发明人： Katsuhiro YUTANI
IPC分类号： G02F1/225 , H04B10/516 , H04B10/25
CPC分类号： G02F1/2252 , G02F2001/212 , H04B10/2504 , H04B10/50 , H04B10/516 , H04B10/564 , H04B10/588
摘要： A pluggable electric connector can communicate a communication data signal and a control signal with an optical communication apparatus. An optical signal output unit includes a Mach-Zehnder type optical modulator including a phase modulation area and outputs an optical modulation signal modulated according to the communication data signal. An optical power control unit can control optical power of the optical modulation signal. A pluggable optical receptor can output the optical modulation signal to an optical fiber. A control unit controls a modulation operation of the optical signal output unit and the bias voltage applied to the phase modulation area. The control unit determines the bias voltage applied to the phase modulation area according to phase angle information of the control signal. The optical signal output unit applies the bias voltage determined by the control unit to the phase modulation area.
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10.发明公开公开(公告)号：US20240168359A1
公开(公告)日：2024-05-23
申请号：US18425017
申请日：2024-01-29
申请人： NEC Corporation
发明人： Katsuhiro YUTANI
IPC分类号： G02F1/225 , H04B10/25 , H04B10/50 , H04B10/516 , H04B10/564 , H04B10/588
CPC分类号： G02F1/2252 , H04B10/25891 , H04B10/50 , H04B10/516 , H04B10/564 , H04B10/588 , G02F1/212
摘要： To autonomously apply a bias voltage to an optical modulator according to phase angle information provided from outside in a pluggable optical module. A pluggable electric connector (11) can communicate a communication data signal and a control signal with an optical communication apparatus (92). An optical signal output unit (13) includes a Mach-Zehnder type optical modulator including a phase modulation area and outputs an optical modulation signal (LS) modulated according to the communication data signal. An optical power control unit (14) can control optical power of the optical modulation signal (LS). A pluggable optical receptor (15) can output the optical modulation signal (LS) to an optical fiber (91). A control unit (12) controls a modulation operation of the optical signal output unit (13) and the bias voltage applied to the phase modulation area. The control unit (12) determines the bias voltage applied to the phase modulation area according to phase angle information of the control signal (CON1). The optical signal output unit (13) applies the bias voltage determined by the control unit (12) to the phase modulation area.
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