Abstract: A monitoring system for a working machine, includes a first communicator to communicate in wireless, the first communicator being provided on the working machine including a working device and a traveling device, a second communicator to communicate with the first communicator in wireless, the second communicator being provided on a monitoring device installed in an agricultural field, a monitor to monitor the agricultural field, the monitor being provided on the monitoring device, a judgment analyzer to judge whether the working machine is in a monitoring area based on intensities of signals of the first communicator and the second communicator, and an instruction controller to instruct the monitor to start monitoring when the judgment analyzer determines that the working machine is in the monitoring area of the monitor.

Abstract: A monitoring system for a working machine includes a boarding detector to detect boarding and alighting of an operator, the boarding detector being provided in the working machine, a position detector to detect a position based on a signal sent from a positioning satellite when the boarding detector detects the alighting of the operator, a transmitter to transmit, to a management machine, positional information representing the position detected by the position detector, and a controller to move the management machine based on the positional information when the boarding detector detects the alighting, the controller being provided in the management machine.

Abstract: An agricultural field management system includes a plurality of communication devices arranged in an agricultural field and configured to detect a physical quantity indicating dynamic movement of objects, a dispatcher arranged in the agricultural field and configured to communicate with each of the communication devices, a management apparatus configured to move in the agricultural field. Each of the communication devices is configured to generate first notification information indicating a danger the communication devices, and second notification information indicating an emergency having a urgency degree higher than the danger of the first notification information to the communication devices, defer to transmit the second notification information to the dispatcher until receiving activation information from the dispatcher, and transmit the second notification information to the dispatcher upon receiving the activation information.

Abstract: A communication apparatus comprises: a communication unit configured to establish a connection with an external apparatus and communicating data with the external apparatus in order to execute a predetermined service; and a control unit configured to control the communication unit so that the communication apparatus operates as a first role in the case of connecting to a first external apparatus operating as a second role, and so that the communication apparatus operates as the second role in the case of connecting to a second external apparatus operating as the first role, wherein the control unit controls the communication unit so that the communication apparatus operates as the second role to connect to the second external apparatus operating as the first role in between times when the communication apparatus carries out a process for operating as the first role and periodically transmitting a predetermined signal.

Abstract: An agricultural field management system includes a plurality of communication devices arranged in an agricultural field and configured to detect a physical quantity indicating dynamic movement of objects, a dispatcher arranged in the agricultural field and configured to communicate with each of the communication devices, a management apparatus configured to move in the agricultural field. Each of the communication devices is configured to generate first notification information indicating a danger the communication devices, and second notification information indicating an emergency having a urgency degree higher than the danger of the first notification information to the communication devices, defer to transmit the second notification information to the dispatcher until receiving activation information from the dispatcher, and transmit the second notification information to the dispatcher upon receiving the activation information.

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 device comprises a connector that receives power supplied from a power supply apparatus, a charging unit that charges a battery using power received from the power supply apparatus, and a testing unit that tests a power supply capability of the power supply apparatus by passing current supplied from the power supply apparatus to a load unit in a state where receiving power from the power supply apparatus is limited by the charging unit.

Abstract: A monitoring system for a working machine, includes a first communicator to communicate in wireless, the first communicator being provided on the working machine including a working device and a traveling device, a second communicator to communicate with the first communicator in wireless, the second communicator being provided on a monitoring device installed in an agricultural field, a monitor to monitor the agricultural field, the monitor being provided on the monitoring device, a judgment analyzer to judge whether the working machine is in a monitoring area based on intensities of signals of the first communicator and the second communicator, and an instruction controller to instruct the monitor to start monitoring when the judgment analyzer determines that the working machine is in the monitoring area of the monitor.

Abstract: A monitoring system for a working machine includes a boarding detector to detect boarding and alighting of an operator, the boarding detector being provided in the working machine, a position detector to detect a position based on a signal sent from a positioning satellite when the boarding detector detects the alighting of the operator, a transmitter to transmit, to a management machine, positional information representing the position detected by the position detector, and a controller to move the management machine based on the positional information when the boarding detector detects the alighting, the controller being provided in the management machine.

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: 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: 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: 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: 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: An electronic device comprises a connector that receives power supplied from a power supply apparatus, a charging unit that charges a battery using power received from the power supply apparatus, and a testing unit that tests a power supply capability of the power supply apparatus by passing current supplied from the power supply apparatus to a load unit in a state where receiving power from the power supply apparatus is limited by the charging unit.

Abstract: A communication apparatus comprises: a communication unit configured to establish a connection with an external apparatus and communicating data with the external apparatus in order to execute a predetermined service; and a control unit configured to control the communication unit so that the communication apparatus operates as a first role in the case of connecting to a first external apparatus operating as a second role, and so that the communication apparatus operates as the second role in the case of connecting to a second external apparatus operating as the first role, wherein the control unit controls the communication unit so that the communication apparatus operates as the second role to connect to the second external apparatus operating as the first role in between times when the communication apparatus carries out a process for operating as the first role and periodically transmitting a predetermined signal.

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: 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 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: 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.