A memory device includes a non-volatile memory and a controller. The controller is configured to control the non-volatile memory and includes a receiving circuit configured to receive first data from an external device, a converting circuit configured to convert the first data received by the receiving circuit to second data having a data size equal to or smaller than a data size of the first data, and a writing circuit configured to write the second data converted by the converting circuit in the non-volatile memory.

A wireless power circuit is presented that includes a transmit coil coupled to a first node; a receive coil coupled to the first node; a switch circuit coupled to the transmit coil and the receive coil opposite the first node, the switch switching the transmit coil to a second node in a transmit mode and switching the receive coil to the second node in a receive mode; a controller coupled to the first node and the second node, the controller coupled to provide signals to the switch circuit; and a self-start circuit coupled to the receive coil (or Tx coil) that automatically selects one of the coils to be used, the self-start circuit providing power to the switch circuit to hold the switch circuit in the receive mode (or predefined coil to be selected by default).

A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using a wireless power transmitting coil. The wireless power receiving device may transmit data packets to the wireless power transmitting device. The wireless power transmitting device may include a data receiver that is coupled to the wireless power transmitting coil and that receives the transmitted data packets. The data receiver may be configured to demodulate the received data packets. The data packets may include at least preamble bits, start bits, and data bits encoded as biphase half-bit signals in accordance with a predefined wireless power transfer protocol. During demodulation, the receiver may perform preamble detection, start bit detection, and data bit detection by comparing the input signals to corresponding reference patterns using a maximum likelihood sequence detection scheme. Phase recovery may be employed throughout to help provide immunity to phase change.

A fixing element for electrical devices, wherein at least one electrical device can be fixed to the fixing element, has at least one coupler, which forms at least one coupling to the at least one electrical device fixed to the fixing element, via which coupling electrical energy and/or data can be transmitted to the at least one electrical device, wherein the coupling is a capacitive and/or inductive coupling. In addition, equipment includes such a fixing element and a least one electrical device, which is fixed to the electrical element.

A wireless power transmission system includes a first antenna, a second antenna configured to perform wireless power transmission with the first antenna, and a movement unit configured to move a position of the second antenna relative to the first antenna in a predetermined moving direction, wherein the second antenna is shorter in length in the moving direction than the first antenna, wherein a distance between at least one end portion of the first antenna in the moving direction and the second antenna at a position where the second antenna faces the end portion is longer than a distance between an intermediate portion of the first antenna and the second antenna at a position where the second antenna faces the intermediate portion, and wherein the intermediate portion of the first antenna is a portion of the first antenna excluding both end portions of the first antenna.

Disclosed herein, a power supply may be recharged with a generally used system. In various embodiments, cleaning systems may be used to affect a generator to cause the generator to charge a power supply. Such charging systems may be used without the need for separate or specialized power charging systems. A charging source or system may, therefore, also charge a power supply without requiring additional steps.

A wireless power transmitter includes a power conversion unit configured to transfer wireless power to a wireless power receiver by forming magnetic coupling with the wireless power receiver; and a communication/control unit configured to communicate with the wireless power receiver to control transmission of the wireless power and to perform transmission or reception of data, wherein the communication/control unit further configured to set a target power level based on an operation condition, receive, from the wireless power receiver, a received power packet (RPP) which informs a value of the wireless power received by the wireless power receiver, transmit a bit pattern to the wireless power receiver in response to the RPP, the bit pattern requesting communication initiated by the wireless power transmitter, and receive, from the wireless power receiver, a response packet to allow the communication initiated by the wireless power transmitter.

The present invention refers to a storage device for headphones comprising a compartment for non liquid means for cleaning the headphones and/or means for charging electronic devices. It further refers to a cleaning device for headphones.

A testing device (30; 50) for testing a wireless power transmitter device (20) having at least one transmitter coil (24), wherein the testing device (30; 50) comprises at least one wireless power receiver coil (34) and wherein the testing device (30; 50) is in operative communication with a processing means (42; 52) and its associated memory (44; 54). The testing device (30; 50) is configured to receive a power signal applied by the wireless power transmitter device (20), transmit a first packet, being a signal strength packet, to the wireless power transmitter device (20) in response to receiving said power signal and transmit a second packet to the wireless power transmitter device (20) if the wireless power transmitter device (20) continues to transmit the power signal to the testing device (30; 50) n response to receiving the signal strength packet. The processing means (42; 52) is configured to store the signal strength packet or signal strength value(s) thereof in the memory (44; 54) if the wireless power transmitter device (20), in response to said signal strength packet, continues to transmit the power signal to the testing device (30; 50), and to disregard the signal strength packet or signal strength value(s) thereof if the wireless power transmitter device (20) aborts the power signal during or before the second packet is completely transmitted.

An electronic device is provided. The electronic device includes a main body; an intake hole formed at a first face facing a first direction in the main body; a fan disposed inside the main body and pulling air through the intake hole; a charging device disposed between the fan and a second face facing a second direction opposite to the first direction in the main body, and the charging device including a coil that supplies power to an external electronic device; a plurality of holders disposed to a side face in the main body, the plurality of holders holding the external electronic device mounted on the second face; and a holder flow path that provides the air, which is circulated by the fan to each of the plurality of holders, toward the external electronic device.