Patents Assigned to Furuno Electric Company, Limited
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Patent number: 9390531Abstract: A movable body display device includes an acquisition component, a memory component, an input component, a length adjuster, and a display controller. The acquisition component acquires position and speed of a movable body. The memory component stores a plurality of display ranges, a number of range rings for each display range, and a reference speed. The input component receives input designating one of the display ranges. The length adjuster adjusts length of a speed vector on a screen such that length of a speed vector indicating the reference speed on the screen is the same as a spacing of the range rings on the screen based on the display range. The display controller displays the movable body on the screen according to the position, and displays adjacent to the movable body a speed vector for which heading and length have been set based on the length and the speed.Type: GrantFiled: March 11, 2014Date of Patent: July 12, 2016Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Yugo Kubota, Yasuhisa Fujii
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Patent number: 9386629Abstract: There is provided a configuration in an access point managed by a management device for dealing with a situation in which management by the management device is no longer possible. An access point 3 includes a controller 30 that controls the operation of the access point 3, and a management status detector 32 that detects the management status by a management device 2. The controller 30 changes the operation of the access point 3 by validating or invalidating an SSID according to the detecting result of the management status.Type: GrantFiled: May 27, 2014Date of Patent: July 5, 2016Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Tsutomu Tanaka, Daijirou Hasegawa
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Patent number: 9366758Abstract: This disclosure provides a detection device, which includes a transceiving module for transmitting a transmission signal and receiving an echo caused by the transmission signal to output a reception signal according to an intensity of the echo, a memory module for storing the reception signals for a plurality of measurements, and an interference detecting module for detecting an interference signal from the reception signals, the interference detecting module determining that the reception signal contains the interference signal when the reception signal has an intensity difference with the previous reception signal by more than a predetermined threshold for over a reference time period in one measurement.Type: GrantFiled: May 2, 2011Date of Patent: June 14, 2016Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Yuriko Onishi, Satoshi Misonoo
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Patent number: 9340270Abstract: There is provided an automatic steering device with which a heading can be stably controlled even under powerful disturbance. The control computer 8 outputs an ordered rudder angle calculated based on the drift angle and the turning angular velocity. The angular velocity inversion timing acquisition component 21 acquires a timing at which the turning angular velocity changes from a direction in which a divergence of the drift angle from zero increases to a direction in which the divergence decreases. The steering stop command component 22 orders a steering stop based on the above-mentioned timing. The steering gear controller 10 controls a steering gear such that it changes a rudder angle of the steering gear based on the ordered rudder angle, and such that it does not change the rudder angle while a command of the steering stop has been received.Type: GrantFiled: February 14, 2014Date of Patent: May 17, 2016Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventor: Hideki Ueno
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Patent number: 9310483Abstract: An ultrasonic wave transceiving device is provided. The device includes a transmitter for transmitting at least one kind of first detection data ultrasonic signal and a plurality of kinds of second detection data ultrasonic signals, a receiver for receiving echo signals of the first and second detection data ultrasonic signals, and first and second information generators for generating first and second information based on the echo signal of the first and second detection data ultrasonic signals, respectively. The transmitter transmits the first and second detection data ultrasonic signals which transmission period of the first detection data ultrasonic signal intervenes between transmission periods of the second detection data ultrasonic signals in time axis. The second information generator generates the second information by using the echo signals of the second detection data ultrasonic signals.Type: GrantFiled: April 26, 2013Date of Patent: April 12, 2016Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Satoshi Misonoo, Nicolas Borrallo, Yuji Onishi, Shogo Nagai, Suenobu Hase, Takeharu Yamaguchi
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Patent number: 9291705Abstract: A signal processing device is provided. The device includes a signal input unit for receiving reception signals obtained from transmission signals reflecting on one or more objects, a pulse compressor for pulse compressing the reception signals, an interference detector for detecting a reception signal caused by interference, from the pulse-compressed reception signals, a signal level controlling module for controlling a level of the detected reception signal, and an interpolation processing module for interpolating the level-controlled reception signal in an azimuth direction.Type: GrantFiled: June 19, 2013Date of Patent: March 22, 2016Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Kazuya Nakagawa, Yasunobu Asada
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Patent number: 9268021Abstract: This disclosure provides a detection device, which includes a transceiver for transmitting a transmission signal and receiving an echo caused by the transmission signal to output a reception signal according to an intensity of the echo, the reception signal in one measurement including one or more reception signals, and an interference detector for detecting an interference signal from the one or more reception signals. The interference detector performs a switching operation of switching interference detection processing between first interference detection processing and second interference detection processing that has a higher interference detection sensitivity than in the first interference detection processing, according to the number of the reception signals detected as the interference signals.Type: GrantFiled: April 13, 2012Date of Patent: February 23, 2016Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Makoto Iwamoto, Satoshi Misonoo, Yuriko Onishi
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Patent number: 9268022Abstract: This disclosure provides an underwater detection device, which includes a first generator for generating a first transmission signal, a second generator for generating a second transmission signal having a longer pulse width than that of the first transmission signal, an output unit for outputting the transmission signals generated by the first and second generators to a transducer for transmitting underwater ultrasonic waves based on the first and second transmission signals, respectively, receiving the reflection waves caused by the ultrasonic waves, respectively, and converting the reflection waves into a first reception signal and a second reception signal, respectively, an underwater detector for detecting at least one of a presence of a target object and a water bottom depth based on the first reception signal, and a bottom sediment discriminator for discriminating a water bottom sediment type based on the second reception signal.Type: GrantFiled: April 13, 2012Date of Patent: February 23, 2016Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Takeharu Yamaguchi, Nicolas Borrallo
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Patent number: 9232008Abstract: A navigation system includes two or more navigation instruments connected with a network, and two or more sensors connected with the network and for detecting information to be used by the navigation instruments. The navigation instrument includes a switch control module for switching between a state in which the navigation instrument functions as a mother unit and as a child unit, a delivery module for transmitting through the network, when one of the navigation instruments functions as the mother unit, representative sensor selection related information to another navigation instrument that functions, the representative sensor selection related information being information about which sensor is to be used among the two or more sensors, and a representative sensor selecting module for selecting the sensor to be used based on the representative sensor selection related information received from the navigation instrument that functions as the mother unit.Type: GrantFiled: June 24, 2011Date of Patent: January 5, 2016Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventor: Yuichi Hara
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Patent number: 9223015Abstract: An interference rejection device includes a change amount calculator, a detector, and a rejecter. The change amount calculator is configured to find change amounts in at least one of amplitude and phase of received signals of a plurality of sweeps in a distance direction between a first distance and a second distance. The detector is configured to detect radar interference occurring between the first distance and the second distance by comparing the change amounts calculated by the change amount calculator between the plurality of sweeps. The rejecter is configured to reduce the amplitude of the received signal corresponding to a position of the radar interference.Type: GrantFiled: June 18, 2013Date of Patent: December 29, 2015Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventor: Tatsuya Kojima
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Patent number: 9198408Abstract: This disclosure provides a moving body display device, which includes a position calculating module for acquiring a positioning signal of a target moving body and calculating a position of the moving body, a behavior calculating module for calculating a positional change of the moving body based on the positioning signal, and a position storage module for storing a position where the positional change is detected when the positional change that satisfies a determination condition set is detected.Type: GrantFiled: September 30, 2010Date of Patent: December 1, 2015Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Masashi Imasaka, Eisuke Sekine
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Patent number: 9188669Abstract: A high resolution processing device that is provided to a target finder for detecting a presence of a target, and that increases resolution of a received signal received by the target finder, includes a first change amount calculator, a second change amount calculator, a coefficient setting component, and an output signal production component. The first change amount calculator calculates as a first change amount an amount of change in the received signal received by the target finder per unit quantity in one direction of an angle direction and a distance direction. The second change amount calculator calculates as a second change amount an amount of change in the first change amount per unit quantity in the one direction. The coefficient setting component sets at least one coefficient based on the first change amount and the second change amount.Type: GrantFiled: May 10, 2013Date of Patent: November 17, 2015Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventor: Akihiro Hino
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Patent number: 9182234Abstract: A fishfinder data display device is provided. The display device includes a memory for storing fishfinder data obtained by a fishfinder detecting underwater and a location where the fishfinder data is acquired so as to associate the fishfinder data with the location, a display unit for displaying an image created based on the fishfinder data, and a controller, when an operator performs a specifying operation to a predetermined part of the image displayed by the display unit, for reading the location corresponding to the fishfinder data based on the specified predetermined part of the image from the memory, and causing an autopilot device to execute an autopilot operation with the location as a destination.Type: GrantFiled: September 28, 2012Date of Patent: November 10, 2015Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Akira Ninomiya, Shuji Wada
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Patent number: 9182488Abstract: This disclosure provides a target object detection device for outwardly transmitting a detection pulse and detecting a target object based on a returned reception signal. The device includes a first peak holding module for extracting, at every predetermined cycle, a maximum value of the reception signals obtained in the predetermined cycle, a second peak holding module for extracting, at the same predetermined cycle, a minimum value of the reception signals obtained in the predetermined cycle, and a target object determiner for determining a level rising and a level falling of the reception signal indicating the target object by using a gradient between the minimum and maximum values extracted at different peak holding positions.Type: GrantFiled: December 5, 2011Date of Patent: November 10, 2015Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Yuriko Onishi, Satoshi Misonoo
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Patent number: 9166674Abstract: An object of the present invention is to provide a satellite communication device which receives instructions from a remote place and automatically carries out a predetermined process. The satellite communication device includes an acquiring section, a storing section, and a control section. The acquiring section acquires instruction information through an artificial satellite by line switching type communication. The storing section stores the instruction information and a registered process by established correspondence. The control section reads out a process corresponding to the instruction information acquired by the acquiring section based on storage contents of the storing section, and carries out the process that has been read out.Type: GrantFiled: July 30, 2013Date of Patent: October 20, 2015Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Satoshi Adachi, Katsuhiro Takahashi, Kazumasa Yamamoto
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Patent number: 9146302Abstract: A disturbance signal removing device is provided. The device includes an antenna for transmitting a modulated pulse signal and a non-modulated pulse signal, and a transmission frequency setter for selectively setting as a transmission frequency band of the modulated pulse signal any one of a plurality of mutually different frequency bands of the modulated pulse signal that are different from a transmission frequency band set to the non-modulated pulse signal. The transmission frequency setter switches between the plurality of transmission frequency bands of the modulated pulse signal.Type: GrantFiled: June 8, 2012Date of Patent: September 29, 2015Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventor: Tatsuya Kojima
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Patent number: 9136608Abstract: A slot array antenna is provided. In one embodiment, the slot array antenna includes a radiation waveguide having a first conductor plane in which a slot array is two-dimensionally arrayed and a second conductor plane in parallel thereto, and an introduction waveguide formed with a slot array, for introducing electromagnetic waves in a waveguide space of the radiation waveguide. Each slot of the slot array of the introduction waveguide is provided at an ½ wavelength or odd-number multiple of ½ wavelength of a wavelength inside the waveguide with respect to a direction of propagating the electromagnetic waves in the introduction waveguide, and the slots are tilted in the same direction, and thereby exciting electromagnetic waves in a high-order mode of a TE-mode in the radiation waveguide 30.Type: GrantFiled: August 8, 2007Date of Patent: September 15, 2015Assignee: Furuno Electric Company LimitedInventor: Koji Yano
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Patent number: 9121936Abstract: A highly accurate positioning operation is achieved regardless of an existence of multipath. An observed pseudorange ?m(k) is acquired based on reception signals of positional signals (S101). A current determination estimated pseudorange ?mp(k) is calculated based on a previous estimation result (S102). A determination difference value Delta?m(k) is calculated based on the observed pseudorange ?m(k) and the estimated pseudorange ?mp(k) (S103). A determination threshold ?Delta? is calculated based on a C/No of the reception signal and PDOP (S104). If the determination difference value Delta?m(k) is below the threshold ?Delta?, an error variance ??m(k) is calculated using an approximate equation of the C/No (S105(NO)?S106), and if the determination difference value Delta?m(k) is above the threshold ?Delta?, the error variance ??m(k) is calculated based on the threshold ?Delta? (S105(YES)?S107).Type: GrantFiled: February 23, 2011Date of Patent: September 1, 2015Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventor: Takaki Tominaga
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Patent number: 9093996Abstract: A DDS achieved in size and cost reductions by removing a ROM for storing a table and the like and suppressing an operation amount is provided. A DDS includes an NCO, a DAC, and a BPF. The NCO outputs a sawtooth wave. The DAC converts either one of the sawtooth wave outputted from the NCO and a triangle wave signal converted by a waveform converting circuit based on the sawtooth wave, from a digital signal into an analog signal. The BPF receives the signal converted into the analog signal by the DAC and extracts a sine wave at a predetermined frequency from the inputted signal, by allowing a signal at a frequency within a fixed range to pass therethrough.Type: GrantFiled: December 10, 2012Date of Patent: July 28, 2015Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Katsuhisa Yamashina, Kazunori Miyahara
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Patent number: 9091752Abstract: A radar device is provided. The radar device is installed in a movable body, transmits electromagnetic waves at a predetermined frequency, and receives response waves transmitted from a transponder device in response to the electromagnetic waves, respectively. The radar device includes a representative distance calculating module for calculating a representative distance from the radar device to the transponder device based on the response waves that are continuous over a predetermined azimuth angle range, a representative relative azimuth calculating module for calculating a representative relative azimuth of the transponder device from the radar device based on the continuous response waves, and a positioning module for calculating a location of the radar device based on positional information of the transponder device that is contained in each of the response waves, the calculated representative distance, and the calculated representative relative azimuth.Type: GrantFiled: January 11, 2013Date of Patent: July 28, 2015Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Jun Yamabayashi, Tatsuya Kojima