Abstract: An aerial display apparatus according to one embodiment is an aerial display apparatus displaying a virtual image in the air. The aerial display apparatus includes: a display apparatus irradiating with light to display information; a retroreflective member reflecting the light from the display apparatus multiple times to display a virtual image in the air; an infrared-ray transmission/reception unit transmitting and receiving infrared rays used as data through the retroreflective member; a control unit transmitting and receiving a control signal to and from each of the display apparatus and the infrared-ray transmission/reception unit; and a housing accommodating the display apparatus and the infrared-ray transmission/reception unit. The retroreflective member is mounted on an opening formed in the housing, and the display apparatus and the infrared-ray transmission/reception unit are arranged inside the housing.

Abstract: A reference position setting method includes: a process of displaying at least three markers on an operation surface; a process of acquiring coordinate values of a sensor coordinate system; a process of transforming the acquired coordinate value into coordinate values of a temporary coordinate system; and a process of transforming the transformed coordinate values into coordinate values of a screen coordinate system. At least one of parallel movement and rotation is performed with respect to the sensor coordinate system to transform the sensor coordinate system into the temporary coordinate system. Movement of the temporary coordinate system in a direction parallel to a plane including a second X-axis and a second Y-axis, and enlargement or reduction of the temporary coordinate system are performed to transform the temporary coordinate system into the screen coordinate system.

Abstract: An operation detection device according to an embodiment is an operation detection device that detects an object approaching an operation unit. The operation detection device includes: a sensor that detects a distance from the object as a plurality of pixels; and an object detection unit that detects the object. The object detection unit specifies a first pixel corresponding to the distance that is the shortest among the plurality of pixels, scans a plurality of second pixels located around the first pixel, and detects the object when the number of second pixels for which a difference between a distance corresponding to each of the second pixels and the shortest distance is equal to or less than a predetermined value, among the plurality of second pixels, is equal to or greater than a predetermined number.

Abstract: A reference position setting method includes: a process of displaying at least three markers on an operation surface; a process of acquiring coordinate values of a sensor coordinate system; a process of transforming the acquired coordinate value into coordinate values of a temporary coordinate system; and a process of transforming the transformed coordinate values into coordinate values of a screen coordinate system. At least one of parallel movement and rotation is performed with respect to the sensor coordinate system to transform the sensor coordinate system into the temporary coordinate system. Movement of the temporary coordinate system in a direction parallel to a plane including a second X-axis and a second Y-axis, and enlargement or reduction of the temporary coordinate system are performed to transform the temporary coordinate system into the screen coordinate system.

Abstract: Of the moving directions of the piston, the direction in which high-pressure air is delivered is a delivery direction, and the direction in the opposite direction from the delivery direction is a force accumulation direction. The piston is moved in the force accumulation direction by the moving mechanism, and moved in the delivery direction by the biasing force of the biasing spring in response to the release of the moving force exerted by the moving mechanism. The cylinder is provided with: a piston supporting portion that supports the piston; and a connection protrusion that has a delivery path for delivering the high-pressure air to the nozzle. The inner surface of an end of the piston supporting portion in the delivery direction is formed as a closed surface. The delivery path is located further toward the force accumulation direction than the closed surface is.

Abstract: Warning information that facilitates grasping an obstacle located in rear of a vehicle is provided. A driving assistance system including: a first detection section that detects an obstacle from a plurality of captured images of a rear side of a driver of a vehicle; a second detection section that detects the obstacle by analyzing a reflected wave of a measurement wave transmitted to the rear side; and an information output section that determines a direction in which the obstacle is located with respect to the vehicle on the basis of detection results of the first detection section and the second detection section, and that outputs warning information indicating the direction.

Abstract: An operation detection device according to an embodiment includes: a display unit that displays an operation unit as a virtual image; a sensor that detects a position of an object approaching the operation unit; and a determination unit that determines whether or not the operation unit has been pressed based on the position of the object detected by the sensor. The determination unit determines that the operation unit has been pressed before the object reaches the operation unit.

Abstract: Of moving directions of a piston, the direction in which high-pressure air is delivered is a delivery direction, and the direction in the opposite direction from the delivery direction is a force accumulation direction. The piston is moved in the force accumulation direction by the moving mechanism, and moved in the delivery direction by the biasing force of the biasing spring in response to the release of the moving force exerted by the moving mechanism. The cylinder is provided with: a piston supporting portion that supports the piston; and a connection protrusion that has a delivery path for delivering the high-pressure air to the nozzle. The inner surface of an end of the piston supporting portion in the delivery direction is formed as a closed surface. The delivery path is located further toward the force accumulation direction than the closed surface is.

Abstract: A lamp control device includes: at least two lamps; a lamp ECU provided in each of the at least two lamps and configured to perform a lamp control on the each of the at least two lamps; and a vehicle ECU configured to communicate a control signal to the lamp ECU. The vehicle ECU is connected to the lamp ECU via a first high-speed communications line. The lamp ECU is configured to independently perform a lamp control by communication through the first high-speed communications line.

Abstract: A reference position setting method according to the present disclosure is a reference position setting method for setting a reference position for recognizing whether or not an operation unit displayed as a virtual image has been operated. The reference position setting method includes: a step of displaying a marker displayed as a virtual image larger than an object approaching the marker; a step of detecting the object approaching the marker; and a step of making a color or shade of the outer edge of the marker different from a color or shade of the center of the marker after the step of detecting the object.

Abstract: An operation detection device according to an embodiment is an operation detection device that detects an object approaching an operation unit. The operation detection device includes: a sensor that detects a distance from the object as a plurality of pixels; and an object detection unit that detects the object. The object detection unit specifies a first pixel corresponding to the distance that is the shortest among the plurality of pixels, scans a plurality of second pixels located around the first pixel, and detects the object when the number of second pixels for which a difference between a distance corresponding to each of the second pixels and the shortest distance is equal to or less than a predetermined value, among the plurality of second pixels, is equal to or greater than a predetermined number.

Abstract: A reference position setting method according to the present disclosure is a reference position setting method for setting a reference position for recognizing whether or not an operation unit displayed as a virtual image has been operated. The reference position setting method includes: a step of displaying a marker displayed as a virtual image larger than an object approaching the marker; a step of detecting the object approaching the marker; and a step of making a color or shade of the outer edge of the marker different from a color or shade of the center of the marker after the step of detecting the object.

Abstract: An operation detection device according to an embodiment includes: a display unit that displays an operation unit as a virtual image; a sensor that detects a position of an object approaching the operation unit; and a determination unit that determines whether or not the operation unit has been pressed based on the position of the object detected by the sensor. The determination unit determines that the operation unit has been pressed before the object reaches the operation unit.

Abstract: Of moving directions of a piston, the direction in which high-pressure air is delivered is a delivery direction, and the direction in the opposite direction from the delivery direction is a force accumulation direction. The piston is moved in the force accumulation direction by the moving mechanism, and moved in the delivery direction by the biasing force of the biasing spring in response to the release of the moving force exerted by the moving mechanism. The cylinder is provided with: a piston supporting portion that supports the piston; and a connection protrusion that has a delivery path for delivering the high-pressure air to the nozzle. The inner surface of an end of the piston supporting portion in the delivery direction is formed as a closed surface. The delivery path is located further toward the force accumulation direction than the closed surface is.

Abstract: In a data transmission controller apparatus, a first-in first-out storage stores newly inputted data in response to a write request signal, and reads and outputs the stored data which has been stored earliest in response to a read request signal. A remaining data amount detection portion detects a remaining data amount of the stored data which remain in the first-in first-out storage. A variable frequency oscillating portion generates an enable signal at a time rate according to frequency control information so as to enable generation of the write request signal or read request signal. A frequency control portion corrects the frequency control information so as to return the remaining data amount to an appropriate value when the remaining data amount detected by the remaining data amount detection portion varies away from the appropriate value toward an upper limit value or varies away from the appropriate value toward a lower limit value.

Abstract: In a data transmission controller apparatus, a first-in first-out storage stores newly inputted data in response to a write request signal, and reads and outputs the stored data which has been stored earliest in response to a read request signal. A remaining data amount detection portion detects a remaining data amount of the stored data which remain in the first-in first-out storage. A variable frequency oscillating portion generates an enable signal at a time rate according to frequency control information so as to enable generation of the write request signal or read request signal. A frequency control portion corrects the frequency control information so as to return the remaining data amount to an appropriate value when the remaining data amount detected by the remaining data amount detection portion varies away from the appropriate value toward an upper limit value or varies away from the appropriate value toward a lower limit value.