Abstract: An elastic wave device includes a piezoelectric substrate, an IDT electrode on the piezoelectric substrate, a support member that is provided on the piezoelectric substrate so as to surround the IDT electrode, a cover that covers the support member, via electrodes that penetrate through the support member and the cover, and bumps that are bonded to the via electrodes. The IDT electrode is located in a hollow space that is enclosed by the piezoelectric substrate, the support member and the cover. A protruding portion extends along at least a portion of an outer peripheral edge of a surface of the cover that is on the opposite side from the piezoelectric substrate, and the protruding portion extends in a direction away from the piezoelectric substrate.

Abstract: The present disclosure relates to a transmission/reception device, a transmission/reception method, and a program that enable transmission and reception in either a two-pole configuration or a three-pole configuration by switching with the same circuit configuration in human body communication. A first switch that switches, by on or off, connection to a human body side electrode connected to one of transmission drivers each transmitting a signal by a differential output, and a second switch that switches, by on or off, connection to a space side electrode connected to the other are provided, and in the case of the two-pole configuration, the switch to which the electrode is not connected is used by being fixed to off, the switch to which the electrode is connected is turned on at the time of transmission and turned off at the time of reception, and a terminal is grounded to which the electrode is not connected among terminals connected to a reception unit.

Abstract: An electronic apparatus includes switch control circuitry configured to determine whether a received signal is for a power receiving operation or a data receiving operation based on a level of a frequency component of the received signal, select the power-reception operation or a data-transmission operation based on the determination, and switch to the power-reception operation or the data-transmission operation based on the selection.

Abstract: An electronic unit includes: a power receiving section configured to receive electric power fed from a feed unit by using a magnetic field; and a control section configured to perform, when a receiving current supplied from the power receiving section is less than a predetermined threshold current at a time of a light load, current increasing control to increase the receiving current to the threshold current or more.

Abstract: The present disclosure relates to a transmission/reception device, a transmission/reception method, and a program capable of improving a transmission characteristic in human body communication in both transmission and reception. The transmission/reception device used for human body communication includes three electrodes including a human body side electrode being in contact with a human body as a communication medium, a space side electrode provided on a space side, not a human body side, and a circuit board provided with a circuit. At this time, at the time of transmission, a switch between the space side electrode and the circuit board is turned off to make a three-pole electrode configuration having superiority in the transmission characteristic, and each electrode is caused to function as an independent electrode.

Abstract: The present disclosure relates to a transmission/reception device, a transmission/reception method, and a program capable of improving a transmission characteristic in human body communication in both transmission and reception. The transmission/reception device used for human body communication includes three electrodes including a human body side electrode being in contact with a human body as a communication medium, a space side electrode provided on a space side, not a human body side, and a circuit board provided with a circuit. At this time, at the time of transmission, a switch between the space side electrode and the circuit board is turned off to make a three-pole electrode configuration having superiority in the transmission characteristic, and each electrode is caused to function as an independent electrode.

Abstract: The present disclosure relates to a transmission/reception device, a transmission/reception method, and a program that enable transmission and reception in either a two-pole configuration or a three-pole configuration by switching with the same circuit configuration in human body communication. A first switch that switches, by on or off, connection to a human body side electrode connected to one of transmission drivers each transmitting a signal by a differential output, and a second switch that switches, by on or off, connection to a space side electrode connected to the other are provided, and in the case of the two-pole configuration, the switch to which the electrode is not connected is used by being fixed to off, the switch to which the electrode is connected is turned on at the time of transmission and turned off at the time of reception, and a terminal is grounded to which the electrode is not connected among terminals connected to a reception unit.

Abstract: A communication apparatus of the present disclosure includes: an antenna unit including a first electrode and a second electrode; a communication circuit unit that performs communication using a human body as a communication medium via the antenna unit; and a series circuit including a switch and a capacitor that are coupled to each other in series, and coupled between the first electrode and the second electrode.

Abstract: An opening-closing control device of the present disclosure includes: a first electrode unit and a second electrode unit that perform communication with an authenticated communication device; an authentication processor that performs authentication processing on the authenticated communication device on a basis of a result of the communication with the authenticated communication device; an opening-closing operation unit that performs an operation on a lockable opening-closing unit; an operation detector that detects an operation state of the opening-closing operation unit; and a controller that locks or unlocks the opening-closing unit on a basis of a result of the authentication processing and a result of detection of the operation state.

Abstract: The present disclosure relates to a transmission/reception device, a transmission/reception method, and a program capable of improving a transmission characteristic in human body communication in both transmission and reception. The transmission/reception device used for human body communication includes three electrodes including a human body side electrode being in contact with a human body as a communication medium, a space side electrode provided on a space side, not a human body side, and a circuit board provided with a circuit. At this time, at the time of transmission, a switch between the space side electrode and the circuit board is turned off to make a three-pole electrode configuration having superiority in the transmission characteristic, and each electrode is caused to function as an independent electrode.

Abstract: An electronic unit includes: a power receiving section configured to receive electric power fed from a feed unit by using a magnetic field; and a control section configured to perform, when a receiving current supplied from the power receiving section is less than a predetermined threshold current at a time of a light load, current increasing control to increase the receiving current to the threshold current or more.

Abstract: A communication system of the disclosure includes: a transmitter that includes a first transmitting electrode and a second transmitting electrode, and causes a transmission signal to be generated between the first transmitting electrode and the second transmitting electrode; and a receiver including a first receiving electrode, a second receiving electrode, and a determiner, in which the first receiving electrode and the second receiving electrode each receive the transmission signal through a communication path that includes a human body, and the determiner determines that communication is valid in a case where a reception signal, generated between the first receiving electrode and the second receiving electrode, has a prescribed polarity, and determines that the communication is invalid in a case where the reception signal has a polarity different from the prescribed polarity.

Abstract: Provided is a non-contact electric power feeding system including an electric power feeding device, and an electric power receiving device configured to receive electric power fed from the electric power feeding device. The electric power feeding device includes a primary-side coil, a driver, a primary-side control unit, and a primary-side communication unit. The electric power receiving device includes a secondary-side coil, a rectifier unit, a regulator, a secondary-side communication unit, and a secondary-side control unit.

Abstract: An electronic unit includes: a power receiving section configured to receive electric power fed from a feed unit by using a magnetic field; and a control section configured to perform, when a receiving current supplied from the power receiving section is less than a predetermined threshold current at a time of a light load, current increasing control to increase the receiving current to the threshold current or more.

Abstract: Disclosed herein is a detecting device including a coil electromagnetically coupled to the external, a resonant circuit that includes at least the coil, and a detecting section that superimposes a measurement signal for measuring the Q-factor of the resonant circuit on a power transmission signal transmitted to the coil in a contactless manner and removes the power transmission signal from an alternating-current signal obtained by superimposing the measurement signal on the power transmission signal. The detecting section measures the Q-factor by using the alternating-current signal from which the power transmission signal is removed.

Abstract: Provided is a non-contact electric power feeding system including an electric power feeding device, and an electric power receiving device configured to receive electric power fed from the electric power feeding device. The electric power feeding device includes a primary-side coil, a driver, a primary-side control unit, and a primary-side communication unit. The electric power receiving device includes a secondary-side coil, a rectifier unit, a regulator, a secondary-side communication unit, and a secondary-side control unit.

Abstract: An elastic wave device includes a piezoelectric substrate, an IDT electrode on the piezoelectric substrate, a support member that is provided on the piezoelectric substrate so as to surround the IDT electrode, a cover that covers the support member, via electrodes that penetrate through the support member and the cover, and bumps that are bonded to the via electrodes. The IDT electrode is located in a hollow space that is enclosed by the piezoelectric substrate, the support member and the cover. A protruding portion extends along at least a portion of an outer peripheral edge of a surface of the cover that is on the opposite side from the piezoelectric substrate, and the protruding portion extends in a direction away from the piezoelectric substrate.

Abstract: Disclosed herein is a detecting device including a coil electromagnetically coupled to the external, a resonant circuit that includes at least the coil, and a detecting section that superimposes a measurement signal for measuring the Q-factor of the resonant circuit on a power transmission signal transmitted to the coil in a contactless manner and removes the power transmission signal from an alternating-current signal obtained by superimposing the measurement signal on the power transmission signal. The detecting section measures the Q-factor by using the alternating-current signal from which the power transmission signal is removed.

Abstract: An electronic apparatus includes switch control circuitry configured to determine whether a received signal is for a power receiving operation or a data receiving operation based on a level of a frequency component of the received signal, select the power-reception operation or a data-transmission operation based on the determination, and switch to the power-reception operation or the data-transmission operation based on the selection.

Abstract: An electromagnetically-coupled state detection circuit including a detection unit that measures a primary side Q value of a circuit containing a primary side coil electromagnetically coupled with a secondary side coil and power transmission efficiency to the secondary side coil, corrects the power transmission efficiency based on the Q value of the primary side coil, and detects a state of electromagnetic coupling with the secondary side coil based on an obtained corrected value of the power transmission efficiency.