Abstract: A power transmission apparatus wirelessly transmits power to a power reception apparatus, transmits a signal including information for use in identification of the presence probability of a foreign object to the power reception apparatus. In a case where the presence probability of the foreign object is smaller than a threshold, the power transmission apparatus transmits information for use in identification of the presence probability of the foreign object and information about a request for a process related to reacquisition of a parameter to be used to determine a presence probability of the foreign object, and in a case where the presence probability of the foreign object is greater than the threshold, the power transmission apparatus transmits information for use in identification of the presence probability of the foreign object without the information about a request for the process related to reacquisition of the parameter.

Abstract: A highly functional photoelectric conversion element is provided.

Abstract: Light reduction in a wiring part connected to an optical device of an electronic device including the optical device is prevented. The electronic device includes an insulating layer, an interlayer connection wiring, and an upper layer wiring. The insulating layer is disposed adjacent to the lower layer wiring and includes a through hole. The interlayer connection wiring is a transparent wiring that is connected to the lower layer wiring in the through hole and is formed into a shape extending to a surface side of the insulating layer. The upper layer wiring is a transparent wiring that is stacked and connected to the interlayer connection wiring extending to the surface side of the insulating layer.

Abstract: A power receiving apparatus for receiving power transmitted by wireless power transmission from a power transmitting apparatus, comprises a first communication unit for communicating with the power transmitting apparatus, and a second communication unit for performing communication at a speed higher than the first communication unit. The power receiving apparatus determines, by communication via the first communication unit, whether the power transmitting apparatus has a function of transmitting/receiving, via the second communication unit, information for device authentication with the power transmitting apparatus, and enables the second communication unit to execute transmission/reception of the information for the device authentication with the power transmitting apparatus via the second communication unit if it is determined that the power transmitting apparatus has the function and the second communication unit is in a disabled state.

Abstract: The quantum efficiency can be improved. A solid-state imaging device according to an embodiment includes: a plurality of pixels arranged in a matrix, in which each of the pixels includes a first semiconductor layer, a photoelectric conversion section disposed on the first semiconductor layer on a side of a first surface, an accumulation electrode disposed on the first semiconductor layer close to a side of a second surface on a side opposite to the first surface, a wiring extending from the second surface of the first semiconductor layer, a floating diffusion region connected to the first semiconductor layer via the wiring, and a first gate electrode disposed close to the wiring.

Abstract: Provided is a power transmission device including: a plurality of power transmission coils; a power transmission unit configured to wirelessly transmit power to a power receiving device using at least one of the plurality of power transmission coils; a detection unit configured to perform a process of detecting an object using at least one of the plurality of power transmission coils; and a reception unit configured to receive a signal from the power receiving device, wherein, in a case where the reception unit receives a request to stop power transmission from the power receiving device, the detection unit performs, in a period of stop of a power transmission, a process of detecting an object using a power transmission coil which was used for the power transmission.

Abstract: A power transmission apparatus includes a first power transmission unit configured to perform wireless power transmission to a power receiving apparatus in a first region by using at least one of a plurality of coils, a second power transmission unit configured to perform wireless power transmission to a power receiving apparatus in a second region by using at least one of the plurality of coils. In a case where, while the first power transmission unit performs wireless power transmission to a first power receiving apparatus in a common region where the first region and the second region overlap, a second power receiving apparatus is placed in a region of the first region other than the common region, the first power transmission unit stops the wireless power transmission to the first power receiving apparatus and the second power transmission unit performs wireless power transmission to the first power receiving apparatus.

Abstract: A power receiving apparatus for receiving power transmitted by wireless power transmission from a power transmitting apparatus, comprises a first communication unit for communicating with the power transmitting apparatus, and a second communication unit for performing communication at a speed higher than the first communication unit. The power receiving apparatus determines, by communication via the first communication unit, whether the power transmitting apparatus has a function of transmitting/receiving, via the second communication unit, information for device authentication with the power transmitting apparatus, and enables the second communication unit to execute transmission/reception of the information for the device authentication with the power transmitting apparatus via the second communication unit if it is determined that the power transmitting apparatus has the function and the second communication unit is in a disabled state.

Abstract: A power transmission apparatus performs wireless power transmission to a power receiving apparatus using at least one of a plurality of coils including a first coil and a second coil disposed at a position closer to the first coil than a position separated from the first coil by a specific distance, and perform object detection by outputting one or more signal for object detection from one or more of the plurality of coils. Signals for object detection are not outputted at a same time from the first coil and the second coil.

Abstract: A power transmission apparatus performs object detection, perform wireless power transmission to the power receiving apparatus via at least one of a plurality of coils. The power transmission apparatus, in a power transfer phase, stops the wireless power transmission for a specific period and, in the specific period, outputs a signal for object detection from a coil that is from among the plurality of coils and is different from the at least one of the plurality of coils.

Abstract: The quantum efficiency can be improved. A solid-state imaging device according to an embodiment includes: a plurality of pixels (110) arranged in a matrix, in which each of the pixels includes a first semiconductor layer (35), a photoelectric conversion section (PD1) disposed on the first semiconductor layer on a side of a first surface, an accumulation electrode (37) disposed on the first semiconductor layer close to a side of a second surface on a side opposite to the first surface, a wiring (61, 62, 63, 64) extending from the second surface of the first semiconductor layer, a floating diffusion region (FD1) connected to the first semiconductor layer via the wiring, and a first gate (11) that forms a potential barrier in a charge flow path from the first semiconductor layer to the floating diffusion region via the wiring.

Abstract: A power transmitting apparatus (100) derives data corresponding to a reference for power loss between the power transmitting apparatus (100) and a power receiving apparatus (200) on a basis of a value of reception power received from the power receiving apparatus; and performs a foreign object detection based on the data corresponding to the reference for power loss. The power transmitting apparatus (100) re-derives the data corresponding to the reference for power loss, when a change in the power transmission and reception state is detected in a power-transmittal range of the power transmitting apparatus (100).

Abstract: A power transmitting apparatus measures a Q factor of a power transmitting unit that performs wireless power transfer to a power receiving apparatus, and determines presence/absence of an object different from the power receiving apparatus based on the Q factor. The power transmitting apparatus obtains a first index value regarding a predetermined physical amount different from the Q factor after measurement of the Q factor, obtains a second index value regarding the predetermined physical amount before wireless power transfer to the power receiving apparatus starts after the it is determined in the above determination that an object different from the power receiving apparatus does not exist; and determines presence/absence of an object different from the power receiving apparatus based on the first index value and the second index value.

Abstract: A stack with excellent electrical characteristics and reliability is provided. The stack includes an insulator, a conductor, and a first oxide between the insulator and the conductor; the first oxide includes a first c-axis-aligned crystal region; and a c-axis of the first crystal region is substantially perpendicular to a plane of the first oxide on the insulator side. Alternatively, the stack includes an insulator, a conductor, a first oxide between the insulator and the conductor, and a second oxide facing the first oxide with the insulator therebetween; the first oxide includes a first c-axis-aligned crystal region; a c-axis of the first crystal region is substantially perpendicular to a plane of the first oxide on the insulator side; the second oxide includes a second c-axis-aligned crystal region; and a c-axis of the second crystal region is substantially perpendicular to a plane of the second oxide on the insulator side.

Abstract: A stack with excellent electrical characteristics and reliability is provided. The stack includes an insulator, a conductor, and a first oxide between the insulator and the conductor; the first oxide includes a first c-axis-aligned crystal region; and a c-axis of the first crystal region is substantially perpendicular to a plane of the first oxide on the insulator side. Alternatively, the stack includes an insulator, a conductor, a first oxide between the insulator and the conductor, and a second oxide facing the first oxide with the insulator therebetween; the first oxide includes a first c-axis-aligned crystal region; a c-axis of the first crystal region is substantially perpendicular to a plane of the first oxide on the insulator side; the second oxide includes a second c-axis-aligned crystal region; and a c-axis of the second crystal region is substantially perpendicular to a plane of the second oxide on the insulator side.

Abstract: A power transmission apparatus configured to wirelessly transmit power to a power reception apparatus executes, when wirelessly transmitting power, detection processing for detecting an object different from the power reception apparatus, using a power loss, obtains, from the power reception apparatus, reference value information regarding a reference value of received power used to obtain the power loss, and performs a specific control after the power loss has been obtained and in a case where a predetermined time has elapsed since a predetermined timing associated with a timing at which information is obtained from the power reception apparatus, without obtaining the reference value information that is valid, the specific control being a control to prevent a power transmission output from being increased, regardless of received power in the power reception apparatus.

Abstract: A semiconductor device having high operation frequency is provided. The semiconductor device includes a transistor including a first conductive layer, a first insulating layer, a second insulating layer, a first oxide, a second oxide, a third oxide, a third insulating layer, and a second conductive layer that are stacked in this order, and a fourth insulating layer. The first conductive layer and the second conductive layer include a region overlapping with the second oxide. In a channel width direction of the transistor, a level of the bottom surface of the second oxide is from more than or equal to ?5 nm to less than 0 nm when a level of a region of the bottom surface of the second conductive layer which does not overlap with the second oxide is regarded as a reference.

Abstract: A highly reliable semiconductor device is provided. The semiconductor device includes a first insulator; a first oxide provided over the first insulator; a second oxide provided over the first oxide; a first conductor and a second conductor provided apart from each other over the second oxide; a third oxide provided over the second oxide, the first conductor, and the second conductor; a second insulating film provided over the third oxide; and a third conductor provided over the second oxide with the third oxide and the second insulating film positioned therebetween. The third oxide contains a metal element and nitrogen, and the metal element is bonded to nitrogen.

Abstract: The present disclosure generally relates to a lock mechanism for a tape embedded drive. The tape embedded drive comprises an enclosure enclosing a first tape reel, a second tape reel, and a lock mechanism. The first tape reel comprises a first gear, the second tape reel comprises a second gear, and the lock mechanism is disposed between the first and second gears. The lock mechanism comprises a latch lock, one or more latch tips disposed at a first end of the latch lock, a magnet disposed at a second end of the latch lock, and an electromagnet disposed adjacent to the magnet. When the electromagnet is activated, the latch lock moves to an unlocked position. When the electromagnet is de-activated, the latch lock moves to a locked position where the one or more latch tips are in contact with the first and second gears.

Abstract: A power receiving apparatus for receiving power transmitted by wireless power transmission from a power transmitting apparatus, comprises a first communication unit for communicating with the power transmitting apparatus, and a second communication unit for performing communication at a speed higher than the first communication unit. The power receiving apparatus determines, by communication via the first communication unit, whether the power transmitting apparatus has a function of transmitting/receiving, via the second communication unit, information for device authentication with the power transmitting apparatus, and enables the second communication unit to execute transmission/reception of the information for the device authentication with the power transmitting apparatus via the second communication unit if it is determined that the power transmitting apparatus has the function and the second communication unit is in a disabled state.