302 results about "Radio wave" patented technology

The application relates to the field of gas pressure safety monitoring, and discloses a multi-scene gas pressure safety guarantee and remote monitoring system. The system comprises a dual-mode sensing module, a topology mapping module, a wave speed cooperation module, a fluid routing module, a routing locking module and a remote monitoring module. The wave speed cooperation module utilizes the difference between the propagation speeds of radio waves and pressure waves to send a preemptive wake-up frame, drives a downstream node to start sampling and backtrack to read a hardware cache before a pressure wave arrives, and realizes complete capture of a transient waveform. The fluid routing module constructs a high-reliability control slice containing only physically connected links and a full-through monitoring slice based on radio frequency based on fluid connectivity parameters. The routing locking module generates cascaded locking instructions bound to the control slice, prevents mis-transmission of the instructions beyond a physical breakpoint by using a routing overhead mechanism, and reports a state after a circuit is opened by the monitoring slice. The application effectively solves the problems of transient leakage of low-power devices and mismatch between wireless control logic and physical topology.

By a radio wave map providing device, a radio wave map providing device, or a non-transitory computer readable medium storing a radio wave map providing program, a radio wave map is stored, a radio wave map request is received; an information amount of reference communication quality information equal to or greater than request communication quality information is compared with an information amount of reference communication quality information equal to or less than the request communication quality information, and a radio wave map reply is generated based on the reference communication quality information having a smaller information amount and reference position information, and transmitted.

According to one embodiment, an antenna device includes a first module including first transmit and receive antennas and a second module including second transmit and receive antennas. The first transmit antennas transmit radio waves based on a first reference signal. The second transmit antennas transmit radio waves based on a second reference signal. A phase value is calculated based on a phase difference between received signals of two virtual antennas formed based on received signals of the first receive antennas. A phase of the second reference signal is shifted by the phase value.

There is provided techniques for controlling an RIS. The RIS comprises a controller entity and a reflector entity. The reflector entity is associated with configurable reflection properties defining how radio waves that impinge the reflector entity are reflected. The reflection properties are controlled by the controller entity. A method is performed by a network node. The method comprises determining that the RIS to refrain from reflecting signals communicated in radio waves between the network node and a user equipment. The method comprises, in response thereto, providing an indication to the controller entity for the RIS to enter a non-relay mode according to which the reflector entity is to apply a default configuration of the reflection properties.

When outputting sound using an external audio output device connected to a gaming machine, the audio output is performed using more optimal control. [Solution] Before establishing a connection with an external device, the gaming machine 10 stores identification information to identify the external device to be connected to, switches the radio wave strength to a lower level than when the identification information was stored, then establishes a connection between the gaming machine 10 and the external device based on the stored identification information, and after the connection is established, volume information can be input from the external device. In the gaming machine 10, the detection radio wave is set to the maximum strength when the Bluetooth communication control device 190 is not connected to an external device, and the radio wave strength is switched to the minimum strength after the detection device information is stored in the detection device information unit 196D. When the gaming machine 10 is switched to the minimum strength for connection with an external device, the radio wave strength can be switched to the maximum or medium strength by human operation of the switching means (the minimum strength can be terminated).

[Problem] Provided is a measurement system for a radio wave propagation characteristic capable of achieving a measurement with higher accuracy by eliminating influences of a human and a wired cable in the measurement of the radio wave propagation characteristic in a space. [Solution] The measurement system for a radio wave propagation characteristic includes a base station 3 and a mobile terminal 20 wirelessly communicable with the base station 3. The base station 3 and the mobile terminal 20 are mutually synchronized in time, frequency, and phase. A propagation characteristic of a radio wave wirelessly communicated between the mobile terminal 20 moving in a measurement target space and the base station 3 is sequentially measured on a time-series basis in association with each piece of position information of the mobile terminal 20.

An antenna device comprises a case and an antenna element. The antenna element is arranged in the case and radiates a radio wave with a predetermined frequency which has a plane of polarization in parallel to a predetermined plane. The case is formed with a predetermined opening. The predetermined opening has two main openings and a coupling opening. The two main openings are apart from each other in a first direction perpendicular to the predetermined plane. The coupling opening couples the two main openings together in the first direction. The coupling opening has a size smaller than another size of each of the two main openings in a second direction perpendicular to the first direction. The predetermined opening forms a split ring resonator which resonates at the predetermined frequency and radiates a radio wave corresponding to the radio wave radiated from the antenna element.

When outputting sound using an external audio output device connected to a gaming machine, the audio output is performed using more optimal control. [Solution] Before establishing a connection with an external device, the gaming machine 10 stores identification information to identify the external device to be connected to, switches the radio wave strength to a lower level than when the identification information was stored, then establishes a connection between the gaming machine 10 and the external device based on the stored identification information, and after the connection is established, volume information can be input from the external device. In the gaming machine 10, the detection radio wave is set to the maximum strength when the Bluetooth communication control device 190 is not connected to an external device, and the radio wave strength is switched to the minimum strength after the detection device information is stored in the detection device information unit 196D. When the gaming machine 10 is switched to the minimum strength for connection with an external device, the radio wave strength can be switched to the maximum or medium strength by human operation of the switching means (the minimum strength can be terminated).

A liquid crystal composition for a radio wave control element is provided. The composition serves as a material exhibiting a large refractive index anisotropy with respect to radio waves. The composition includes at least one dichroic coloring agent, with a total content of 30% by mass or more relative to the total mass of the liquid crystal composition. The liquid crystal composition exhibits high absorbance in the wavelength range of 350 to 1,000 nm, making it suitable for use in radio wave control elements requiring strong optical anisotropy and efficient absorption characteristics.

This electric circuit, to which radio waves can be input, comprises: a first terminal; a first connection point; a second connection point; a third terminal; a capacitor connected to the first terminal and the first connection point; a first diode; a second diode; and an overvoltage protection element. A cathode of the first diode is connected to the first connection point. An anode of the first diode is connected to the first terminal. A cathode of the second diode is connected to the second connection point. An anode of the second diode is connected to the first connection point. The overvoltage protection element is connected to the second connection point. The overvoltage protection element is connected to the third terminal.

A vehicle air conditioning system includes: a humidity controlling device having an adsorption portion, heating means, a duct having first and second flow paths; a valve; a blower; and a control unit to control the humidity controlling device, the valve and the blower. A control mode of the control unit includes: an adsorption mode in which the blower is activated and air flows into the first flow path without activating the heating means; and a regeneration mode in which the blower and the heating means are activated and air flows into the second flow path. The control unit executes the regeneration mode when the following conditions (1) and (2) are satisfied:(1) an external power source is connected to the vehicle; and(2) radio waves from an electronic key carried by a user are received or there is at least one occupant in the vehicle interior.

The present invention provides a receiving device and a receiving method that can improve the receiving performance of receiving radio waves transmitted by a transmitter, even when the receiving antenna cannot be positioned away from a noise source. [Solution] The first receiving antenna 18 and the second receiving antenna 19, which receive the transmitted radio waves Sa transmitted from the transmitter 3, are positioned along the propagation path of the transmitted radio waves Sa which are diffracted by the radio wave shielding provided on the vehicle 2, at a position where they receive noise waves transmitted from the noise source of the vehicle 2 in phase, and at positions spaced apart d from each other. The conversion unit 15 converts the phase of the first received radio wave Sb1 received by the first receiving antenna 18 to the phase of the second received radio wave Sb2 received by the second receiving antenna 19. The combiner 16 combines the first received radio wave Sb1 input from the conversion unit 15 and the second received radio wave Sb2 received by the second receiving antenna 19 and outputs it to the receiver 17.

When outputting sound using an external audio output device connected to a gaming machine, the audio output is performed using more optimal control. [Solution] Before establishing a connection with an external device, the gaming machine 10 stores identification information to identify the external device to be connected to, switches the radio wave strength to a lower level than when the identification information was stored, then establishes a connection between the gaming machine 10 and the external device based on the stored identification information, and after the connection is established, volume information can be input from the external device. In the gaming machine 10, the detection radio wave is set to the maximum strength when the Bluetooth communication control device 190 is not connected to an external device, and the radio wave strength is switched to the minimum strength after the detection device information is stored in the detection device information unit 196D. When the gaming machine 10 is switched to the minimum strength for connection with an external device, the radio wave strength can be switched to the maximum or medium strength by human operation of the switching means (the minimum strength can be terminated).

This invention provides a visible light communication device, communication system, and communication method that can improve the throughput of deep learning (DL) using VLC while applying a wireless communication network to relay between VLC APs. [Solution] The visible light communication device performs visible light communication using visible light communication signals. The visible light communication device comprises a wireless signal receiving unit that receives wireless communication signals from multiple upstream communication devices via a wireless communication network using radio waves, and a terminal-side visible light transmitting unit that transmits visible light communication signals to a terminal. The wireless signal receiving unit connects to a specific upstream communication device and receives wireless communication signals depending on the communication status with the multiple upstream communication devices.

The present invention relates to a frequency steered phased array antenna which adjusts beam radiation angle according to frequency for broadband electromagnetic waves, and radiates beams of uniform intensity over a broad range of angles including directly forward. The frequency steered phased array antenna according to the present invention comprises: a directional coupler including a serial feed line that is stacked in n layers and has a plurality of coupling holes formed in one direction in each of the layers; and a radiating module including n horn antennas respectively connected in correspondence to the n layers of the serial feed line, wherein the plurality of coupling holes are formed in each of the layers of the serial feed line at intervals of ¼ of the wavelength (λ) of electromagnetic waves (radio waves) supplied to the serial feed line, and the horn antennas radiate the electromagnetic waves output through the coupling holes of the serial feed line.

An electromagnetic wave reflecting device includes: a reflection panel that reflects radio waves of a desired band selected from a frequency band of 1 GHz or more and 170 GHz or less, and a frame that holds the reflection panel. The reflection panel includes: a dielectric layer, a periodic conductive pattern provided on one surface of the dielectric layer, a ground layer provided on the other surface of the dielectric layer, and an adhesive layer that bonds the conductive pattern to the one surface of the dielectric layer. The adhesive layer covers an entirety of the one surface of the dielectric layer.

This design device comprises: an input unit that acquires area information and design constraint information; an analysis unit that generates a radio wave propagation analysis result on the basis of the area information and the design constraint information; and a design unit that determines a pattern of a reflection plate on the basis of the area information, the design constraint information, and the radio wave propagation analysis result.

To provide a tamper-evident packaging and inventory management system that can easily and inexpensively detect tampering. [Solution] The tamper-evident packaging 1 comprises a packaging body 10 having an opening section 11, a radio wave shielding bag 20 attached to the opening section 11, and a radio wave transmitter 30 sealed in the radio wave shielding bag 20. When the opening section 11 is opened, the radio wave shielding bag 20 is destroyed, and radio waves from the radio wave transmitter 30 become able to be transmitted to the outside of the radio wave shielding bag 20.

When outputting sound using an external audio output device connected to a gaming machine, the audio output is performed using more optimal control. [Solution] Before establishing a connection with an external device, the gaming machine 10 stores identification information to identify the external device to be connected to, switches the radio wave strength to a lower level than when the identification information was stored, then establishes a connection between the gaming machine 10 and the external device based on the stored identification information, and after the connection is established, volume information can be input from the external device. In the gaming machine 10, the detection radio wave is set to the maximum strength when the Bluetooth communication control device 190 is not connected to an external device, and the radio wave strength is switched to the minimum strength after the detection device information is stored in the detection device information unit 196D. When the gaming machine 10 is switched to the minimum strength for connection with an external device, the radio wave strength can be switched to the maximum or medium strength by human operation of the switching means (the minimum strength can be terminated).

A vehicle equipped with a communication unit also has a control unit that can determine the distance between the communication unit and the portable communication unit registered with the communication unit based on the radio wave intensity in wireless communication between the communication unit and the portable communication unit. After detecting an emergency situation in the vehicle where a predetermined tilt angle has been maintained based on a detection signal from the detection unit, the control unit determines whether there is a time-varying distance. If it determines that there is no time-varying distance, it determines the severity of the emergency situation based on the positional relationship between the vehicle and the portable communication unit, and outputs determination information indicating the severity of the emergency situation.

To provide a compact sensor that detects the movement of an object in a 360-degree plane around the sensor. [Solution] The system includes a sensor module 50 that emits radio waves in a specific direction and detects the movement of an object based on the reflected waves of the emitted radio waves, and an antenna 51 that radiates the emitted radio waves in a 360-degree direction on a plane centered on the sensor. The antenna includes a conical reflector 68 that splits the radio waves into two directions, a slit 69 that allows radio waves traveling in a specific direction to pass through, an opening 70 that radiates the radio waves split into two directions, and first fins 71 and second fins 72 that adjust the angle of the radio waves radiated from the opening. The shielding plates 66 provided above and below compress the vertical direction and increase the gain of the radio waves radiated in the horizontal direction.

The present invention relates to the field of communications, and more particularly to methods and a system for providing high-speed communications on a high-speed railway. The technical result is a better quality communication channel provided by train-to-ground radio relay links. The claimed system for providing high-speed communications on a high-speed railway comprises an internal and an external data exchange network. The internal network unites tail-end radio frequency modules mounted in the rear part of a train and equipped with narrow-band antennae, head-end radio frequency modules mounted in the front part of the train and equipped with narrow-band antennae, and switching equipment capable of processing signals from said modules and of providing network devices connected to said equipment with access to the external data exchange network. The external data exchange network unites base stations equipped with narrow-band antennae, said base stations being capable of establishing communication with the tail-end and head-end radio frequency modules in the train and being arranged in proximity to the railway clearance along the path of travel of the train. The antennae of the base stations and of the radio frequency modules in the train are configured to radiate radio waves in a short millimeter wave band.

This application relates to the field of communication technology and provides a response communication method, system, computer device, and readable storage medium for use in classroom interactive response scenarios, enabling response communication between new teaching aids to avoid signal interference between similar teaching aids. When applied to a handheld terminal, the method includes: establishing a communication connection with a host; determining a target operating frequency for communication with the host, wherein the target operating frequency is a radio wave frequency not used by other devices in the environment; and when a response command is received and triggered, sending a response signal to the host based on the radio waves of the target operating frequency, wherein the response signal contains the response command.

For vehicles connecting to wireless communication network access points within a designated area, the system appropriately controls the switching of access points depending on the situation. [Solution] The information processing system is applied to a vehicle traveling in a predetermined area where multiple access points are installed. The information processing system acquires information on the radio wave intensity distribution of each of the multiple access points and information on the vehicle's travel route in the predetermined area. The information processing system calculates the risk at a target location on the vehicle's travel route and calculates the access point switching tolerance at the target location based on the radio wave intensity distribution and the risk. The access point switching tolerance decreases as the risk at the target location increases. The information processing system prohibits switching the target access point to which the vehicle is connected at a target location where the access point switching tolerance is below a threshold.

When outputting sound using an external audio output device connected to a gaming machine, the audio output is performed using more optimal control. [Solution] Before establishing a connection with an external device, the gaming machine 10 stores identification information to identify the external device to be connected to, switches the radio wave strength to a lower level than when the identification information was stored, then establishes a connection between the gaming machine 10 and the external device based on the stored identification information, and after the connection is established, volume information can be input from the external device. In the gaming machine 10, the detection radio wave is set to the maximum strength when the Bluetooth communication control device 190 is not connected to an external device, and the radio wave strength is switched to the minimum strength after the detection device information is stored in the detection device information unit 196D. When the gaming machine 10 is switched to the minimum strength for connection with an external device, the radio wave strength can be switched to the maximum or medium strength by human operation of the switching means (the minimum strength can be terminated).

1. Name of this product design: Anti-permeability rubber ring. 2. Application of this design: It is used in instruments such as the ST and Sublime radio waves to provide gel anti-permeation protection for the air vent during instrument operation. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A system for controlling a watercraft includes a satellite positioning sensor, a remote sensor, and a controller. The satellite positioning sensor detects a position of a watercraft based on radio waves transmitted from a satellite. The remote sensor detects a position of a target object. When the satellite positioning sensor receives the radio waves transmitted from the satellite, the controller is configured or programmed to obtain the position of the watercraft detected by the satellite positioning sensor and execute a normal automated navigation such that the watercraft is moved along a predetermined navigation route. The controller is configured or programmed to obtain the position of the target object detected by the remote sensor during navigation of the watercraft, and execute a temporary automated navigation to move the watercraft toward the target object when the satellite positioning sensor is interrupted from receiving the radio waves transmitted from the satellite.