Abstract: In various embodiments, a power supply apparatus for wirelessly transmitting electric power includes a power supply unit configured to output a wireless signal of a predetermined frequency to supply power to a power receiving apparatus, a communication unit, and a control unit, wherein the control unit receives data from the power receiving apparatus via the communication unit, and controls an output of the power supply unit based on the data, and wherein the control unit detects intensity of a harmonic component of the wireless signal output from the power supply apparatus, and controls the output of the power supply unit such that the detected intensity of the harmonic component becomes equal to or less than a predetermined value.

Abstract: An agricultural field management system includes a plurality of communication devices arranged on an agricultural field, each of the communication devices including an outputting circuit being configured to output identification information, a signal receiving circuit disposed on a management machine movable in an agricultural field and configured to receive the identification information outputted by the outputting circuit a position detecting circuit disposed on the management machine and configured to detect measurement information based on a signal from a navigation satellite, a first obtaining circuit to obtain the identification information received by the signal receiving circuit, a second obtaining circuit to obtain the measurement information detected by the position detecting circuit of the management machine on the agricultural field, a relating circuit to relate the identification information obtained by the first obtaining circuit to the measurement information obtained by the second obtaining ci

Abstract: An electronic apparatus that can receive power from an external apparatus connected via an interface and comprises an interface having a first terminal and a second terminal. The apparatus determines whether or not a time difference between a time of detection of a first voltage at a first terminal and a time of detection of a second voltage at a second terminal is smaller than or equal to a predetermined value, determines a type of the external apparatus by executing first connected device detection if the time difference is smaller than or equal to the predetermined value, and executing second connected device detection different from the first connected device detection if the time difference is larger than the predetermined value, and performs power reception control based on a result of determination of a type of the external apparatus.

Abstract: An electronic device includes a load testing unit, a first control unit, and a second control unit. The load testing unit conducts a load test between a power supply apparatus and the electronic device. The first control unit stops charging of a battery pack by power supplied from the power supply apparatus during a period in which the load test is conducted. The second control unit stops outputting of an activation signal for activating the electronic device if a voltage supplied from the power supply apparatus to the electronic device falls outside a predetermined voltage range during the period in which the load test is conducted.

Abstract: A wireless communication device includes an antenna unit including an antenna pattern; a magnetic member arranged over the antenna unit; and a device that acts as a non-contact type integrated circuit, wherein a ratio of an area of the magnetic member to an area of a region including an outermost periphery of the antenna pattern is 90% or more, and wherein a resonant frequency of the wireless communication device has a deviation from a target resonant frequency falls within a range of ?1.720% to +4.334%.

Abstract: A communication apparatus, comprises a power receiving unit configured to be capable of wirelessly receiving power from another apparatus, a charging unit configured to be capable of charging a secondary battery using the power received from the another apparatus, a wireless communication unit configured to be capable of performing wireless communication with the another apparatus, a rectification smoothing unit configured to rectify and smooth the power received from the another apparatus, and output the rectified and smoothed power, a suppressing unit configured to suppress a transient voltage fluctuation in an output voltage of the rectification smoothing unit, and a driving unit configured to drive the suppressing unit so that the output voltage of the rectification smoothing unit generated by the power received from the another apparatus does not exceed a first voltage.

Abstract: A first advertise signal from a first external apparatus is received. A connection request is transmitted to the first external apparatus in response to the received first advertise signal. A connection is established with the first external apparatus, and a predetermined function is executed by using the established connection. In a case where the first advertise signal is received and an error relating to the predetermined function occurs before a connection with the first external apparatus is established, a connection request is transmitted to the first external apparatus to establish a connection with the first external apparatus and transmits a notification indicating that the error occurred.

Abstract: An electronic device has a connecting unit configured to connect to an external device by cable and receive external power from the external device, and a control unit configured to execute a predetermined function using the external power. The electronic device logically determines a power supply capability of the external device connected to the connecting unit, and determines whether the external device is capable of power supply at the logically determined power supply capability. If it is determined that the external device is not capable of power supply at the logically determined power supply capability, a prohibited state in which the predetermined function cannot be executed using the external power is set to the control unit.

Abstract: An electronic device configured to be connected to an external device and to charge a secondary battery using power supplied from the external device determines whether the external device has a predetermined power supply capability, and, in a case where it is determined that the external device has the predetermined power supply capability, receives power from the external device at a predetermined current value and charges the secondary battery. The electronic device notifies a charge state of the secondary battery with a first notifying pattern, before it is determined whether the external device has the predetermined power supply capability, and notifies the charge state with a second notifying pattern in response to determining that the external device has the predetermined power supply capability.

Abstract: A power receiving apparatus that is capable of communicating with a power transmitting apparatus with wireless power transmission capability, the power receiving apparatus comprises: a detection unit configured to detect a state of the power receiving apparatus; a communication unit configured to, in order to establish connection to other apparatuses including the power transmitting apparatus, transmit information indicating an existence of the power receiving apparatus to the other apparatuses, or receive information indicating an existence of the other apparatuses from the other apparatuses; and a control unit configured to control transmission and reception of the information, wherein in order to enable establishment of connection to the power transmitting apparatus, the control unit switches between transmission and reception of the information based on whether the state of the power receiving apparatus is a predetermined state.

Abstract: A communication apparatus comprises a close proximity wireless communication unit which is able to perform close proximity wireless communication with an external apparatus; a power control unit which starts control of power supply of the communication apparatus when the close proximity wireless communication unit receives electromagnetic waves from the external apparatus; and a control unit which executes shutdown processing for reducing power to each block controlled by the power control unit, wherein when the shutdown processing is executed, the control unit disables the close proximity wireless communication unit before start of the shutdown processing.

Abstract: A wireless communication apparatus includes a first control unit operating with power supplied from a secondary battery and operable in a case where a detected voltage of the secondary battery is greater than or equal to a second threshold voltage, a second control unit operating independent from the first control unit and with power supplied from the secondary battery, and a wireless communication unit controlled by the second control unit operating with power supplied from the secondary battery to communicate with a different wireless communication apparatus, wherein, in a case where a detected voltage of the secondary battery is lower than a first threshold voltage that is lower than the second threshold value, the second control unit ends transmission of a packet and communication connection.

Abstract: There is provided a communication apparatus comprising an antenna. A communication unit is able to use external power that is generated by receiving a signal from an external apparatus via the antenna, thereby transmitting a response to the signal that is received from the external apparatus to the external apparatus. A deactivation unit deactivates, in a case where the external power is generated by receiving the signal from the external apparatus via the antenna, supply of the external power from the antenna to the communication unit. A control unit performs control so as to interrupt deactivation of supply of the external power from the antenna to the communication unit by the deactivation unit.

Abstract: A communication apparatus comprises:a power supply; a communication unit configured to operate by using power from the power supply or a communication partner;an operation unit;a control unit configured to execute software for controlling processing of each unit of the communication apparatus, wherein the control unit starts processing to stop execution of the software if an operation to the operation unit is started while the control unit is executing the software; a power supply control unit configured to control power that is supplied to the control unit, in accordance with a state of as operation with respect to the operation unit; and a disabling unit configured to disable the communication unit, based on the state of the operation with respect to the operation unit and an execution state of the software.

Abstract: In various embodiments, a power supply apparatus for wirelessly transmitting electric power includes a power supply unit configured to output a wireless signal of a predetermined frequency to supply power to a power receiving apparatus, a communication unit, and a control unit, wherein the control unit receives data from the power receiving apparatus via the communication unit, and controls an output of the power supply unit based on the data, and wherein the control unit detects intensity of a harmonic component of the wireless signal output from the power supply apparatus, and controls the output of the power supply unit such that the detected intensity of the harmonic component becomes equal to or less than a predetermined value.

Abstract: A power receiving apparatus includes a first antenna, a second antenna, and a control unit that executes control to exclusively and alternately execute power reception processing of wirelessly obtaining power from a power transmission apparatus via the first antenna and communication processing of wirelessly communicating with the power transmission apparatus via the second antenna, where, during execution of the communication processing, the control unit executes control to set a resonance frequency of the first antenna to be a frequency lower than a carrier frequency band of the second antenna for the execution of the communication processing.

Abstract: There is provided a communication apparatus comprising an antenna. A communication unit is able to use external power that is generated by receiving a signal from an external apparatus via the antenna, thereby transmitting a response to the signal that is received from the external apparatus to the external apparatus. A deactivation unit deactivates, in a case where the external power is generated by receiving the signal from the external apparatus via the antenna, supply of the external power from the antenna to the communication unit. A control unit performs control so as to interrupt deactivation of supply of the external power from the antenna to the communication unit by the deactivation unit.

Abstract: An electronic apparatus includes an authentication unit that executes an authentication process for authenticating a battery connected to the electronic apparatus, a holding unit that holds a value representing a result of the authentication process, wherein the value held by the holding unit is deleted in a case where the battery is removed from the electronic apparatus, or in a case where a voltage of the battery is equal to or less than a predetermined value, and a control unit that performs control to determine whether to cause the authentication unit to execute the authentication process according to the value held by the holding unit.

Abstract: A communication apparatus comprises a close proximity wireless communication unit which is able to perform close proximity wireless communication with an external apparatus; a power control unit which starts control of power supply of the communication apparatus when the close proximity wireless communication unit receives electromagnetic waves from the external apparatus; and a control unit which executes shutdown processing for reducing power to each block controlled by the power control unit, wherein when the shutdown processing is executed, the control unit disables the close proximity wireless communication unit before start of the shutdown processing.

Abstract: There is provided a communication apparatus comprising an antenna. A communication unit is able to use external power that is generated by receiving a signal from an external apparatus via the antenna, thereby transmitting a response to the signal that is received from the external apparatus to the external apparatus. A deactivation unit deactivates, in a case where the external power is generated by receiving the signal from the external apparatus via the antenna, supply of the external power to the communication unit. A control unit performs control so as to interrupt deactivation of supply of the external power to the communication unit by the deactivation unit.