A power transmission apparatus has a first communication function for communicating with a power reception apparatus and a second communication function for communicating with the power reception apparatus at a radio frequency different from a radio frequency used in the first communication function, and makes a decision as to whether to use the first communication function or the second communication function in communication for controlling wireless transmission of power, the decision being made on the basis of device information obtained from the power reception apparatus through communication using the first communication function.

To provide means for determining a place and a time at which maintenance is carried out by enabling objective measurement of the status of an object. A power receiving-type information transmission device that is provided in a long body, which is a measurement object, the power receiving-type information transmission device including power receiving means for wirelessly receiving power supply from a moving body configured to be movable along a track, information acquisition means for acquiring information regarding a physical change occurring in the long body by consuming power obtained by the power receiving means, and transmission means for wirelessly transmitting the information to the moving body by consuming the power obtained by the power receiving means.

A first object and a second object are movable in relation to one another. The first object includes a transponder using an integrated circuit having two terminals which may or may not be shorted. The presence or absence of a short circuit between the two terminals is detected. This is accomplished at least partly by the second object depending on the relative positioning of the first and second objects. The transponder transmits, to a module having a contactless reader function, positioning information corresponding to said relative positioning using a contactless communication protocol.

A first object and a second object are movable in relation to one another. The first object includes a transponder using an integrated circuit having two terminals which may or may not be shorted. The presence or absence of a short circuit between the two terminals is detected. This is accomplished at least partly by the second object depending on the relative positioning of the first and second objects. The transponder transmits, to a module having a contactless reader function, positioning information corresponding to said relative positioning using a contactless communication protocol.

A system is provided along a route of a network including a first transponder at a first node and a second transponder at a second node. The system further includes one or more processors configured to detect, in a first waveform measured at the first transponder, a first signature at a first time point, and configured to detect, in a second waveform measured at the second transponder, a second signature at a second time point. The one or more processors may correlate the first waveform and the second waveform, and determine, based on the correlation, that the first signature and the second signature correspond to a same event occurring along the route of the network. Based on comparing the first time point and the second time point, the one or more processors may determine an estimated location of the event.

A system is provided along a route of a network including a first transponder at a first node and a second transponder at a second node. The system further includes one or more processors configured to detect, in a first waveform measured at the first transponder, a first signature at a first time point, and configured to detect, in a second waveform measured at the second transponder, a second signature at a second time point. The one or more processors may correlate the first waveform and the second waveform, and determine, based on the correlation, that the first signature and the second signature correspond to a same event occurring along the route of the network. Based on comparing the first time point and the second time point, the one or more processors may determine an estimated location of the event.

A passive radiofrequency transponder comprises a radiating dipole antenna consisting of a single-strand helical spring having an axis, a median plane, a pitch and a diameter for a given wire diameter, and an electronic portion located inside the radiating antenna. The electronic portion comprises an electronic chip electrically connected to a primary antenna that is electromagnetically coupled to the radiating antenna. The primary antenna has an axis parallel to the axis of the radiating antenna and a median plane superposed with the median plane of the radiating antenna. The primary antenna is circumscribed by a cylinder the diameter of which is larger than one third of the inside diameter of the radiating antenna. The radiofrequency transponder is characterized in that, in a first region of the radiating antenna, in which the latter is not located plumb with the electronic portion, the first helix pitch of the radiating antenna is larger than the second helix pitch of the radiating antenna that does not form part of this first region.

A passive radiofrequency transponder comprises a radiating dipole antenna consisting of a single-strand helical spring having an axis, a median plane, a pitch and a diameter for a given wire diameter, and an electronic portion located inside the radiating antenna. The electronic portion comprises an electronic chip electrically connected to a primary antenna that is electromagnetically coupled to the radiating antenna. The primary antenna has an axis parallel to the axis of the radiating antenna and a median plane superposed with the median plane of the radiating antenna. The primary antenna is circumscribed by a cylinder the diameter of which is larger than one third of the inside diameter of the radiating antenna. The radiofrequency transponder is characterized in that, in a first region of the radiating antenna, in which the latter is not located plumb with the electronic portion, the first helix pitch of the radiating antenna is larger than the second helix pitch of the radiating antenna that does not form part of this first region.

Notification of a situation in which communication with another terminal is not possible is expressly given to a user. A display apparatus (1) includes an NFC communication unit (112), an NFC controller (13) configured to detect a mobile apparatus (100), a communication mode determination unit (142) configured to determine, when the mobile terminal is detected, whether or not communication with the mobile apparatus based on a P2P mode via an NFC communication unit is possible, and a notification control unit (144) configured to notify that the communication is not possible when it is determined that the communication is not possible.

A radio transmission device for the radio transmission of an interrogation signal based on a signal to be amplified is provided. This method comprises a generator for generating a signal to be amplified, and a selection block for selecting a type of interrogation signal to be transmitted from among at least two different types of signals. The generator for generating a signal to be amplified is configured so as to allow transmission of the signal to be amplified so as to generate the interrogation signal corresponding to the selected type of interrogation signal.