Patents Assigned to Kabushiki Kaisha Tokai Rika Denki
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Publication number: 20230198697Abstract: There is provided a communication device comprising: a control unit configured to control ranging with a wireless signal in conformity with a regulated communication standard, wherein the control unit controls output intensity of a data transmission signal that has a payload based on reception sensitivity for a plurality of ranging signals transmitted to and received from other communication devices.Type: ApplicationFiled: December 2, 2022Publication date: June 22, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Masateru FURUTA, Tadashi FUKAGAI, Yuki KONO, Yutaka KUBO
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Patent number: 11679739Abstract: A start switch device includes a start button configured to send a command to start or stop a vehicle drive device, a biometric sensor arranged on the start button for reading a biometric information of an operator to operate an operating surface of the start button, a light source configured to emit an illuminating light from an inside of the start button toward the operating surface, and a design part arranged around the biometric sensor on the operating surface and configured to define a design on the operating surface by the illuminating light transmitted therethrough.Type: GrantFiled: September 16, 2021Date of Patent: June 20, 2023Assignees: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yo Ikeda, Tomoyuki Funayama, Yuya Goto, Naoyuki Takada
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Publication number: 20230187831Abstract: There is provided an antenna that transmits and receives a wireless signal compliant with a designated communication standard, the antenna comprising: a metal plate that is disposed on a circuit board; a first supporting section that supports the metal plate and connects the metal plate to a feed point formed on the circuit board; at least one second supporting section that supports the metal plate and connects the metal plate to a ground plane formed on the circuit board; and a plurality of extension sections that extend from an outer edge of the metal plate toward a direction of the circuit board but have no contact with the circuit board; wherein the plurality of extension sections operate as perturbation elements that form two excitation modes, the two excitation modes spatially intersecting with one other.Type: ApplicationFiled: December 2, 2022Publication date: June 15, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Koji INAFUNE, Kenichi KOGA, Tatsuya KOIKE, Satoshi MORI
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Patent number: 11673597Abstract: A switch device includes a switch body, which is arranged at the back side of a steering unit, and a lever unit, which is attached to the switch body to allow for switching by a pivotal operation about a first axis, which extends in the axial direction of a steering shaft. The lever unit includes a lever shaft, which extends in a direction intersecting the first axis of the pivotal operation, a lever head, which is arranged at the distal end of the lever shaft and has a larger dimension than the diameter of the lever shaft, and a push operation unit, which allows for switching by a push operation. The push operation unit is arranged so that the operation direction of the push operation is directed toward the first axis.Type: GrantFiled: March 1, 2021Date of Patent: June 13, 2023Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Nobuyuki Ishigure, Yuki Sato, Tadashi Usuya, Akio Nishiyama, Masahiro Kato, Takayuki Aoki, Shinji Matsubara, Toshihiko Kosugi, Ryusuke Ohta, Shinji Hara
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Publication number: 20230176677Abstract: A control device comprising a control unit configured to control regular operation based on operation on a first switch detecting operation in two opposing directions and operation on a second switch detecting touch on an object, wherein the control unit performs control such that the regular operation based on operation on the second switch is not performed until a regular time set between first and second times passes after operation on the first switch is detected, wherein the first time is a time in which a cumulative occurrence rate at which unintended touch on the second switch by a user after operation on the first switch occurs becomes 100% in an experiment carried out in advance, and wherein the second time is a time in which an intended touch on the second switch by the user after operation on the first switch is first detected.Type: ApplicationFiled: December 1, 2022Publication date: June 8, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Fumiaki HIROSE, Yasutaka MATSUDA, Takeshi OHNISHI, Kunitoshi NOGUCHI, Shogo YAMAGUCHI, Takuma FUKUDA
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Patent number: 11668591Abstract: A rotation detecting device includes a rotation operation part configured to be rotationally operated, a first detector configured to detect a rotation of the rotation operation part and output a first rotation detection signal, a second detector configured to output a second rotation detection signal, with a predetermined phase difference with respect to the first rotation detection signal, a third detector configured to output a third rotation detection signal, with each of a predetermined phase difference with respect to the first rotation detection signal of the first detector and a phase difference with respect to the second rotation detection signal of the second detector, and a controller configured to, based on the first rotation detection signal, the second rotation detection signal, and the third rotation detection signal, perform detection of a failure of the first detector, the second detector, or the third detector.Type: GrantFiled: October 25, 2018Date of Patent: June 6, 2023Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventor: Yuji Takai
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Patent number: 11661901Abstract: To provide a mechanism that can further improve security of an electronic key installed in a vehicle interior. There is provided a housing device configured to store an electronic key configured to perform wireless communication with an in-vehicle device mounted on a vehicle, the housing device comprising: a housing formed by using a material that shields a first signal transmitted by the in-vehicle device; a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device carried by a user; and a control mechanism configured to control whether or not to enable the first signal to reach an inside of the housing based on the trigger signal, wherein the second signal transmitted by the electronic key that has received the first signal is used to control a control target device installed in the vehicle.Type: GrantFiled: April 15, 2021Date of Patent: May 30, 2023Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventor: Masanori Kosugi
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Publication number: 20230160920Abstract: A tire position determination system provided in a vehicle including a first tire and a second tire includes an initiator that transmits a command signal, a first detector attached to the first tire, a second detector attached to the second tire, and a monitoring unit. A distance between the first tire and the initiator is equal to or shorter than a distance between the second tire and the initiator. Each of the first detector and the second detector includes an acceleration sensor. A detection signal includes a detection value from the acceleration sensor. The monitoring unit performs determination processing for determining a position of the first tire and a position of the second tire based on positional relation between the detector and the initiator estimated from the detection value from the acceleration sensor.Type: ApplicationFiled: November 14, 2022Publication date: May 25, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Masanori KOSUGI, Yuta TSUCHIKAWA, Akito KUMAGAI
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Patent number: 11659506Abstract: To provide a mechanism capable of matching timings at which communication is performed between devices. A communication device for performing wireless communication with another communication device, the communication device comprising: a first wireless communication unit configured to perform communication conforming to a first wireless communication standard; a second wireless communication unit configured to perform communication conforming to a second wireless communication standard; and a control unit configured to control the first wireless communication unit so that the first wireless communication unit transmits, a plurality of times, a first signal, the first signal being a signal conforming to the first wireless communication standard and being a signal including setting information that is information for setting a timing at which the second wireless communication unit performs communication.Type: GrantFiled: January 27, 2021Date of Patent: May 23, 2023Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Masateru Furuta, Tadashi Fukagai, Yuki Kono, Yutaka Kubo
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Publication number: 20230153684Abstract: To more efficiently acquire vital data which is less affected by noise. Provided is a learning device including a learning unit that performs learning related to an output of vital data indicating vital signs of a subject by using first sensor data acquired from the subject through a first method as learning data and using training data based on second sensor data acquired from the subject in the same period as a period of acquisition of the first sensor data through a second method which is less affected by noise than the first method, wherein the learning unit performs learning further on the basis of third sensor data which is acquired in the same period as the period of acquisition of the first sensor data and the second sensor data and available as an index indicating a magnitude of influence of the noise occurring in the first sensor data.Type: ApplicationFiled: February 4, 2021Publication date: May 18, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Tetsuya HIROTA, Daisuke KAWAMURA, Ryugo FUJITA
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Publication number: 20230150578Abstract: A correction system for a steering device that steers a steered wheel so that a steered angle of the steered wheel follows a steering angle of a steering wheel of a vehicle. The correction system includes a mode setting unit that sets the steering device to a correction mode for correcting the steering angle. An error calculation unit receives the detected steering angle and the detected steered angle in the correction mode when the steering wheel is rotated to calculate the difference between the steering angle and the steered angle and obtain a trigonometric waveform as an error of the steering angle. A correction unit corrects a parameter of the waveform so that the waveform become close to optimal.Type: ApplicationFiled: November 10, 2022Publication date: May 18, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Toru KOSHIMIZU, Seiji KONDO
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Publication number: 20230144492Abstract: A control device that communicates with a first communication device and a second communication device, the control device comprising: a determination section configured to determine a position of a terminal on a basis of a first ranging result obtained from a radio wave communicated between the first communication device and the terminal and a second ranging result obtained from a radio wave communicated between the second communication device and the terminal, wherein the first communication device is disposed at a first position where it is difficult to directly receive the radio wave between a first area and a second area that are separated by a first member including material through which it is difficult for the radio wave to penetrate, and the second communication device is disposed at a second position where it is difficult to directly receive the radio wave between the first area and the second area.Type: ApplicationFiled: February 3, 2021Publication date: May 11, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Yuki KONO, Shigenori NITTA, Masateru FURUTA, Yosuke OHASHI
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Publication number: 20230144952Abstract: A control device and a control method that can reduce power consumption for waiting for reception of a signal are provided. The control device includes a controller configured to control a communicator such that the communicator performs wireless communication with another device. The controller controls a reception waiting time of a predetermined signal which is transmitted from the other device by the wireless communication on the basis of acquired acquisition information.Type: ApplicationFiled: February 1, 2021Publication date: May 11, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Yosuke OHASHI, Masateru FURUTA, Yuki KONO, Shigenori NITTA
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Patent number: 11643129Abstract: At a rim portion of a steering wheel, a shielding layer is disposed between a sensor electrode and a rim metal core portion. The shielding layer extends with respect to the sensor electrode. Therefore, generation of capacitive coupling between the sensor electrode and the rim metal core portion can be suppressed properly by the shielding layer, and parasitic capacitance that is generated at the sensor electrode can be reduced.Type: GrantFiled: March 5, 2019Date of Patent: May 9, 2023Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventors: Tetsushi Urushibata, Ryohei Sugimoto
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Patent number: 11644858Abstract: A lever operation device includes a lever main body on which a first rotation operation about a first shaft is performed, a bracket portion that includes an insertion opening for insertion of the lever main body and a through-hole in communication with the insertion opening, a housing which rotatably holds the bracket portion and on which a detent wall including a detent surface is arranged, and a detent portion that is inserted into the through-hole and includes a detent tip end portion in contact with the detent surface, a detent base end portion in contact with the lever main body inserted into the insertion opening of the bracket portion, and an elastic portion applying an elastic force, which is generated by being sandwiched and compressed by the detent surface and the lever main body, to the detent surface and the lever main body.Type: GrantFiled: March 30, 2022Date of Patent: May 9, 2023Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Yosuke Hatada, Yuki Sato, Takamitsu Ito
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Publication number: 20230139686Abstract: A tire revolution direction determination system includes a detection device arranged in each of two tires coupled back-to-back and a monitoring unit. The detection device includes a first detector that detects a first acceleration in a tire diameter direction and a second detector that detects a second acceleration in the tire diameter direction. The first detector is arranged in front of the second detector in a reference direction. When the monitoring unit receives the first acceleration and the second acceleration from the detection device while a vehicle travels forward, it specifies change over time of the first acceleration and change over time of the second acceleration and determines whether a direction of revolution of the tire where the detection device is arranged is the reference direction based on whether change over time of the first acceleration is more advanced than change over time of the second acceleration.Type: ApplicationFiled: October 25, 2022Publication date: May 4, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventor: Masanori KOSUGI
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Publication number: 20230133362Abstract: A control device includes a control section configured to obtain one or more distance measurement values, and estimate a relative position of a position changeable type communication device with respect to a target space based on the one or more distance measurement values, the one or more distance measurement values being obtained when one or more position fixed type communication devices and the position changeable type communication device perform wireless communication, and indicating a distance between each of the one or more position fixed type communication devices and the position changeable type communication device.Type: ApplicationFiled: December 2, 2020Publication date: May 4, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Masateru FURUTA, Tadashi FUKAGAI, Yuki KONO, Yutaka KUBO, Yosuke OHASHI
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Publication number: 20230132672Abstract: There are provided a control device, a control system, and a program that can improve position estimation precision. A control device includes a control section configured to obtain a distance measurement value, and estimate a relative position of the position changeable type communication device with respect to a target space based on the distance measurement value, the distance measurement value being obtained when a position fixed type communication device and the position changeable type communication device perform wireless communication, and indicating a distance between the position fixed type communication device and the position changeable type communication device, the position fixed type communication device being fixed to a position that is inside the target space, and is closer to a floor part than to a ceiling part of the target space, and the relative position of the position changeable type communication device with respect to the target space being changeable.Type: ApplicationFiled: February 1, 2021Publication date: May 4, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE
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Publication number: 20230136318Abstract: A tire position determination system includes a first tire detector, a revolving body detector, and a monitoring unit. The first tire detector is attached to a first tire and detects an acceleration. The revolving body detector is attached to a first revolving body and detects an acceleration. The monitoring unit obtains first correspondence representing relation between a first value and a second value during a first period, obtains second correspondence representing relation between a third value and a fourth value during a second period, compares the first correspondence and the second correspondence with each other, and determines whether or not the first tire revolves in synchronization with the first revolving body.Type: ApplicationFiled: October 25, 2022Publication date: May 4, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventor: Masanori KOSUGI
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Publication number: 20230135990Abstract: there is provided an antenna device comprising a flat dielectric substrate a radiating element disposed on a surface of the dielectric substrate and a ground plane disposed on another surface opposite to the surface of the dielectric substrate wherein the radiating element has a size corresponding to operating frequency of the radiating element, and the ground plane has a plurality of openings that are periodically made at a pitch less than ΒΌ wavelength of the operating frequency.Type: ApplicationFiled: October 7, 2022Publication date: May 4, 2023Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Koji INAFUNE, Kenichi KOGA, Tatsuya KOIKE, Satoshi MORI