A power transmission device performs a detection process, in accordance with a coupling state between an antenna of the power transmission device and an antenna of a power reception device, to detect an object different from the power reception device, based on values of a voltage or a current at…
The present disclosure provides a wireless charging system and a control method thereof. The control method includes: when the battery pack is in over-discharged state, controlling the power transmitting module to wirelessly transmit first preset power, i.e., auxiliary electrical energy, to the…
A power receiving apparatus wirelessly receives power from a power transmitting apparatus, and performs communication with the power transmitting apparatus. The power receiving apparatus transmits, to the power transmitting apparatus, a packet for requesting to stop a power transmission and to…
Provided is a wireless charger for providing power received from a power supply device to a power receiving device. In the wireless charger, a control circuit may control a communication circuit of the wireless charger so as to, on the basis that the communication circuit of the wireless charger…
A power transmission device includes: a coil that performs power transmission or power reception in a wireless manner; a power supply device that is connected to the coil and applies a voltage to the coil; and a control device that controls the power supply device. When detecting an electric…
A method for optimized wireless power transfer between two coils by transferring power of a coil of a primary side to a coil on a secondary side, the method including determining a common resonant frequency of the primary and secondary sides by measuring a power consumption of the secondary side…
A power receiving device includes: power receiving unit configured to receive power wirelessly from a power transmitting device; receiving unit configured to receive first information related to a voltage of an inverter included in the power transmitting device from the power transmitting device…
Systems and methods for operating a wireless power transfer device are described. A circuit can generate a first signal that indicates a voltage at a node between a first high-side (HS) transistor and a first low-side (LS) transistor in a switching converter falling below ground. The circuit can…
A device for transmission of wireless power according to an embodiment of the present specification comprises: a power conversion circuit for transmitting the wireless power to a wireless power receiving device; and a communication/control circuit for communicating with the wireless power receiving…
A wireless power transfer system is provided having a wireless transmission system with an input to receive input power from an input power source, a transmission antenna configured to couple with a receiver antenna associated with a wireless receiver system in a peripheral device, and a…
A power receiver () comprises an input circuit (, ) with a receiver coil () extracting power from a power transfer signal generated by a power transmitter (). A variable load () applies a modulation loading to the input circuit (, ) and a data transmitter () transmit data symbols to the power…
This disclosure provides systems, methods and apparatuses for communication protocol enhancements in a wireless power system. Various implementations relate generally to messages for a communication protocol in a wireless power system. The communication protocol and related aspects address…
In a non-contact power supply system, each of a main power supply device and a sub power supply device includes a timer counter. The main power supply device transmits a square wave to the sub power supply device. The sub power supply device performs interrupt processing when a value of the square…
Embodiments of a method and apparatus for wireless communications are disclosed. In an embodiment, a wireless device includes a controller configured to generate an AMbient Power (AMP) transmission element, which contains information that indicates a frame format used in the AMP transmission…
A wireless power transmitter is configured to (i) detect a presence of an object and (ii) after detecting presence of the object, carrying out a first beaconing process for detecting a wireless power receiver. Based on the first beaconing process, the wireless power transmitter is configured to…
Described here are systems, devices, and methods for establishing a wireless link such as for exchanging wireless power, data, or signals through tissue. In some variations, a system may comprise a first device configured to generate a wireless signal. A second device may comprise a processor and…
A system for wireless power delivery, preferably including a plurality of transmitters and one or more receivers, and optionally including one or more relay nodes, pilot tone transmitters, and/or controllers. A method for wireless power delivery, preferably including synchronizing transmitter…
A wireless power transmitter performs power monitoring based on detection of power transfer initiation and termination request messages inherent to a wireless power transfer protocol. By linking the power monitoring to the messages in the wireless power transfer protocol, the wireless power…
A system including a plurality of transmitters configured to transmit a wireless signal for supplying power and an information processing apparatus configured to supply electric power for that transmission, wherein the plurality of transmitters are electrically connected in series with the…
A receiver is provided for wirelessly receiving microwave power. The receiver includes a rectifier that rectifies the transmitting power, an electric power management device that manages a rectified voltage from the rectifier, a charger that is charged by an output voltage from the power management…
A receiver for wirelessly receiving transmitting power includes a control unit, a charging unit charged by the transmitting power, a sensor configured to measure a physical quantity, and a transmitter configured to transmit the physical quantity. The control unit includes a voltage acquisition…
An electronic device is provided. The electronic device includes a housing, a wireless charging circuit, memory, comprising one or more storage media, storing instructions, and at least one processor communicatively coupled to the wireless charging circuit and the memory, wherein the instructions…
An electronic device selectively operable in a wireless power receiver mode to receive power from a wireless power transmitter and in a wireless power transmitter mode to transmit power to an accessory can include a wireless power transfer coil; a rectifier coupled to the wireless power transfer…
A method for operating a wireless transmission system includes (i) receiving, as input, direct current (DC) power from a power and data connector that comprises a power input and a bi-directional data connector, (ii) generating a driving signal for driving an antenna of the wireless power…
A charging apparatus for a wearable device includes a transmitter-side antenna and a transmitter-side control system. The transmitter-side control system is configured to (i) during a first period of time that is prior to the wearable device entering an increased-temperature state, drive the…
A power receiver () comprises an input circuit () with a receiver coil () extracting power from a power transfer signal generated by a power transmitter (). A variable load () applies a modulation loading to the input circuit () and a data transmitter () transmit data symbols to the power…
The present disclosure relates to a method for transmitting a response message in a wireless power transmission system, the method being performed by a data stream responder, wherein the data stream responder enters a power transfer phase related to transferring or receiving wireless power, and…
A method of operating a first device in a wireless communication system may comprise receiving a synchronization signal from at least one second device and at least one third device, performing a synchronization procedure with the at least one second device and the at least one third device based…
An energy harvesting electronic device that includes an energy storage device and a processor is provided. The processor is configured to determine that the electronic device has a first message to transmit to another electronic device. The processor determines that the device has enough energy…
A system for wireless power delivery, preferably including a plurality of transmitters and one or more receivers, and optionally including one or more relay nodes, pilot tone transmitters, and/or controllers. A method for wireless power delivery, preferably including synchronizing transmitter…