Abstract: According to various implementations, a method is performed at a first electronic device with a non-transitory memory and one or more processors. The method includes determining a reference location in a three-dimensional space based on a feature. The feature is generated by a second electronic device. The method includes obtaining, for the reference location, first reference coordinates in an augmented reality coordinate system of the first electronic device and second reference coordinates in an augmented reality coordinate system of the second electronic device. The method includes determining a coordinate transformation based on a function of the first reference coordinates and the second reference coordinates. The method includes synchronizing an augmented reality coordinate system of the first electronic device with an augmented reality coordinate system of the second electronic device using the coordinate transformation.

Abstract: According to various implementations, a method is performed at a first electronic device with a non-transitory memory and one or more processors. The method includes determining a reference location in a three-dimensional space based on a feature. The feature is generated by a second electronic device. The method includes obtaining, for the reference location, first reference coordinates in an augmented reality coordinate system of the first electronic device and second reference coordinates in an augmented reality coordinate system of the second electronic device. The method includes determining a coordinate transformation based on a function of the first reference coordinates and the second reference coordinates. The method includes synchronizing an augmented reality coordinate system of the first electronic device with an augmented reality coordinate system of the second electronic device using the coordinate transformation.

Abstract: According to various implementations, a method is performed at a first electronic device with a non-transitory memory and one or more processors. The method includes determining a reference location in a three-dimensional space based on a feature. The feature is generated by a second electronic device. The method includes obtaining, for the reference location, first reference coordinates in an augmented reality coordinate system of the first electronic device and second reference coordinates in an augmented reality coordinate system of the second electronic device. The method includes determining a coordinate transformation based on a function of the first reference coordinates and the second reference coordinates. The method includes synchronizing an augmented reality coordinate system of the first electronic device with an augmented reality coordinate system of the second electronic device using the coordinate transformation.

Abstract: In one implementation, a method, performed at a first electronic device with one or more processors, a display, and one or more input devices, includes obtaining, for a reference location in a three-dimensional space, first reference coordinates in an augmented reality coordinate system of the first electronic device. The method includes obtaining, for the reference location in the three-dimensional space, second reference coordinates based on transformation data received from a second electronic device. The method includes determining a coordinate transformation based on the first reference coordinates and the second reference coordinates. The method includes synchronizing the augmented reality coordinate system of the first electronic device with an augmented reality coordinate system of the second electronic device using the coordinate transformation.

Abstract: A device for changing a compression ratio of a cylinder unit of a reciprocating piston internal combustion engine has an eccentric bushing which is rotatably arranged in a bore of a connecting rod eye. Said eye encloses a crank pin of a crankshaft, and the bushing is rotatably guided in the bore and can be locked via locking openings, which are arranged to be offset from each other by preferably approximately 180°. The connecting rod has a locking apparatus which interacts optionally with the locking openings and via which the eccentric bushing can only ever be transferred from one position to the next. The locking apparatus has a sliding guideway extending parallel to the longitudinal axis of the bore of the connecting rod bearing eye. The sliding guide interacts with actuating pins arranged in the locking openings and can be displaced radially with respect to the bushing.

Abstract: A device for changing a compression ratio of a cylinder unit of a reciprocating piston combustion engine is provided. An eccentric bushing is rotatably arranged in a receiving bore hole of a bearing eye of a connecting rod (“conrod”). The conrod bearing eye is formed by a conrod upper part and a conrod lower part, and which surrounds a crankpin of a crankshaft. In addition, the eccentric bushing is rotatably guided in the receiving bore hole and can be locked preferably in two positions which are offset from one another by approximately 180° in the circumferential direction of the eccentric bushing. In order to achieve a targeted rotation of the eccentric bushing in the bore hole of the conrod bearing eye between the locking positions, a freewheel is arranged between an outer casing surface of the eccentric bushing and the receiving bore hole of the conrod bearing eye.

Abstract: A device for changing a compression ratio of a cylinder unit of a reciprocating piston internal combustion engine has an eccentric bushing which is rotatably arranged in a bore of a connecting rod eye. Said eye encloses a crank pin of a crankshaft, and the bushing is rotatably guided in the bore and can be locked via locking openings, which are arranged to be offset from each other by preferably approximately 180°. The connecting rod has a locking apparatus which interacts optionally with the locking openings and via which the eccentric bushing can only ever be transferred from one position to the next. The locking apparatus has a sliding guideway extending parallel to the longitudinal axis of the bore of the connecting rod bearing eye. The sliding guide interacts with actuating pins arranged in the locking openings and can be displaced radially with respect to the bushing.

Abstract: A device for changing a compression ratio of a cylinder unit of a reciprocating piston combustion engine is provided. An eccentric bushing is rotatably arranged in a receiving bore hole of a bearing eye of a connecting rod (“conrod”). The conrod bearing eye is formed by a conrod upper part and a conrod lower part, and which surrounds a crankpin of a crankshaft. In addition, the eccentric bushing is rotatably guided in the receiving bore hole and can be locked preferably in two positions which are offset from one another by approximately 180° in the circumferential direction of the eccentric bushing. In order to achieve a targeted rotation of the eccentric bushing in the bore hole of the conrod bearing eye between the locking positions, a freewheel is arranged between an outer casing surface of the eccentric bushing and the receiving bore hole of the conrod bearing eye.

Abstract: The present invention provides an antenna array for ascertaining the distance between vehicles and their speed, which includes devices for receiving or transmitting signal waves, a multi-layer carrier situated underneath the devices, a first potential surface, which is at ground and which is situated on the surface of the carrier facing the devices, coupling devices located in the first potential surface, electrical connecting sections disposed as closely as possible underneath the first potential surface, and a second potential surface which is located underneath the connecting sections and is at mass.