Patent application number | Description | Published |
20120119971 | Apparatus For Controlling Impedance in Adaptive Tuning Antenna Circuit - An apparatus for controlling impedance in an adaptive tuning antenna circuit is disclosed, wherein a matching unit is connected to an output terminal where a coupler outputs a coupled power of a transmission signal, a controller adjusts an impedance of the matching unit to cause the reflected power outputted by the coupler to be minimized, and the controller adjusts an impedance of a tuner to allow a combined impedance of the tuner and an antenna to be equal to the impedance of the matching unit but with opposite phases, thereby adjusting the impedance of the antenna in the optimal state. | 05-17-2012 |
20130106197 | WIRELESS POWER TRANSMITTER AND POWER TRANSMISSION METHOD THEREOF | 05-02-2013 |
20130154386 | WIRELESS POWER TRANSMITTER, WIRELESS POWER RECEIVER AND WIRELESS POWER TRANSMISSION METHOD - Disclosed is a wireless power transmitter for wirelessly transmitting a power to a wireless power receiver. The wireless power transmitter includes a transmitting unit for transmitting a power supplied from a power source to the wireless power receiver using resonance, and a detecting unit for measuring an input impedance seen to the transmitting unit at the power source to detect a variation of an output impedance of the wireless power receiver by using the measured input impedance. | 06-20-2013 |
20130187478 | ENERGY TRANSMISSION APPARATUS AND METHOD - An apparatus and method for wirelessly transmitting electromagnetic energy are provided. The apparatus includes a power source, a transmission unit, and a measurement unit. The power source supplies a power according to a certain frequency. The transmission unit receives the power to wirelessly transmit the received power through self resonance. The measurement unit measures a phase difference between a voltage and current of the transmission unit. The certain frequency is controlled according to the phase difference. Accordingly, the apparatus and method control only the frequency of the power supply when a resonance frequency is changed by the change of an ambient environment, thus enhancing energy transmission efficiency. | 07-25-2013 |
20130214611 | WIRELESS POWER RECEIVER AND METHOD OF MANAGING POWER THEREOF - Disclosed are a wireless power receiver and a method of managing the same. The wireless power receiver to wirelessly receive power from a wireless power transmitter and transmit the power to a load includes a receiving unit to receive AC power from the wireless power transmitter that receives power from a power supply device, a rectifying unit to rectify the received AC power to DC power, and a power managing unit to manage the power transmitted to the load based on the rectified DC power. | 08-22-2013 |
20130214612 | WIRELESS POWER TRANSMITTER, WIRELESS POWER RECEIVER, AND POWER TRANSMISSION METHOD OF WIRELESS POWER TRANSMITTING SYSTEM - A wireless power transmitter for transmitting power to a wireless power receiver in a wireless scheme includes a transmitting coil configured to transmit power, which is supplied by a power source, to a receiving coil of the wireless power receiver using resonance; and a detecting unit configured to detect a coupling state between the transmitting coil and the receiving coil using an input impedance of the wireless power transmitter. | 08-22-2013 |
20130229062 | WIRELESS POWER TRANSMITTER, WIRELESS POWER RECEIVER, AND METHOD OF WIRELESSLY RECEIVING POWER - Disclosed are a wireless power transmitter, a wireless power receiver, and a method of wirelessly receiving power. The wireless power receiver includes a receiving unit receiving the power from the wireless power transmitter using resonance, and a rectifying unit rectifying the power received therein from the receiving unit to supply the power to a load side. The rectifying unit changes an output impedance of the wireless power receiver in order to change an input current of the wireless power transmitter. | 09-05-2013 |
20130241303 | WIRELESS POWER RECEIVER AND WIRELESS POWER TRANSFERRING METHOD - Disclosed is a wireless power receiver to transfer power wirelessly received from a wireless power transmitter to a load. The wireless power receiver includes a first reception induction coil coupled with a reception resonant coil to receive AC power; a first rectifying diode to rectify the AC power received through the first reception induction coil; a second reception induction coil connected to the first reception induction coil and coupled with the reception resonant coil to receive the AC power; and a second rectifying diode to rectify the AC power received through the second reception induction coil, wherein the wireless power receiver changes a transferring path of the power provided to the load according to a polarity variation of the AC power received through the first and second reception induction coils. | 09-19-2013 |
20130241304 | WIRELESS POWER TRANSMITTING APPARATUS AND METHOD THEREOF - Disclosed are a wireless power transmitting apparatus and a method thereof. The wireless power transmitting apparatus wirelessly transmits power to a wireless power receiving apparatus. The wireless power transmitting apparatus detects a wireless power transmission state between the wireless power transmitting apparatus and the wireless power receiving apparatus, and generates a control signal to control transmit power based on the detected wireless power transmission state. The wireless power transmitting apparatus generates the transmit power by using first DC power based on the control signal, and transmits the transmit power to a transmission resonance coil through a transmission induction coil unit based on an electromagnetic induction scheme. | 09-19-2013 |
20130241305 | WIRELESS POWER TRANSMITTER - Disclosed is a wireless power transmitter. The wireless power transmitter for transmitting power to a wireless power receiver in a wireless scheme, includes a transmission circuit unit converting power supplied from a power supply unit into power having a frequency for resonance; a transmission induction coil coupling the converted power; and a transmission resonance coil disposed adjacent to the transmission induction coil to transfer the coupled power from the transmission induction coil to the wireless power receiver using the resonance, wherein the transmission circuit unit is vertically spaced apart from the transmission resonance coil. | 09-19-2013 |
20130313911 | POWER SUPPLY APPARATUS AND POWER CONTROL METHOD THEREOF - Disclosed is a power supply apparatus of a wireless power transmitting apparatus wirelessly transmitting power to a wireless power receiving apparatus. The power supply apparatus includes a power supply to supply DC power, an oscillator to generate an AC signal having a predetermined frequency and an AC power generator to generate AC power using the AC signal and the DC power. The power supply apparatus controls an operating time of the AC power generator to adjust the power supplied to the wireless power transmitting apparatus. | 11-28-2013 |
20140035390 | POWER TRANSMITTER, REPEATER, POWER RECEIVER, AND WIRELESS POWER TRANSMISSION SYSTEM - Disclosed is a wireless power transmission system. The wireless power transmission system includes a power transmitter including a first resonant circuit and wirelessly transmitting power using a resonance, at least one repeater including a second resonant circuit resonating with the first resonant circuit, and a power receiver disposed between the power transmitter and the repeater, including a third resonant circuit magnetically resonating with the first and second resonant circuits, and receiving power from the power transmitter and the repeater. If the power transmitter and the repeater are installed in an indoor space, such as a room or an office room, and the power receiver is installed in a mobile device, such as a cellular phone, the mobile device is automatically charged in the indoor space.; The power transmission efficiency is improved by installing the power receiver between the power transmitter and the repeater. The received power is adjusted according to the alignment direction of the power receiver. | 02-06-2014 |
20140084701 | WIRELESS POWER TRANSMITTER AND METHOD OF CONTROLLING POWER THEREOF - Disclosed are a wireless power transmitter and a method of controlling power thereof. A wireless power transmitter includes a power supply device to supply AC power to the wireless power transmitter; and a transmission coil to transmit the AC power to a reception coil of a wireless power receiver by resonance. The wireless power transmitter controls transmission power to be transmitted to the wireless power receiver based on a coupling state between the transmission coil and the reception coil. | 03-27-2014 |
20140103737 | WIRELESS POWER TRANSMITTER, WIRELESS POWER RECEIVER AND WIRELESS POWER TRANSMISSION METHOD - Disclosed is a wireless power transmitter. A wireless power transmitter includes a transmission coil for generating a magnetic field by receiving power from a power source, a transmission resonant coil for transmitting power to a receiving coil by using the magnetic field generated from the transmission coil by using resonance, a detection unit for detecting an approach of the receiving coil and a power regulator for adjusting an output of the power source, which supplies the power, based on the approach of the receiving coil detected by the detection unit. | 04-17-2014 |
20140111020 | RESONANT COIL, WIRELESS POWER TRANSMITTER USING THE SAME, WIRELESS POWER RECEIVER USING THE SAME - Disclosed is a coil for wirelessly transmitting or receiving power. The coil includes a coil unit formed by winding a plurality of wires insulated from each other; and a capacitor connected to the coil unit. The wires of the coil unit are shorted at a predetermined interval. | 04-24-2014 |
20140111475 | ELECTRONIC DEVICE, WIRELESS POWER RECEIVING APPARATUS, AND DISPLAY APPARATUS - Disclosed are an electronic device, a wireless power reception apparatus, and a display device. The electronic device, which is equipped with a wireless power receiving apparatus to wirelessly receive power from a wireless power transmission apparatus, includes a signal receiving part to receive a signal required to operate the electronic device, and a wireless power signal removing part to remove a signal having a frequency used for wireless power transmission among signals received in the signal receiving part. | 04-24-2014 |
20140125145 | Wireless Power Repeater and Method Thereof - A wireless power repeater for relaying power transmission between a wireless power transmitter and a wireless power receiver according to the embodiment includes a position detector for detecting a position of the wireless power receiver, a repeater resonator unit including a plurality of repeater resonators, and a controller for operating a specific repeater resonator, which is located closest to an extension line of the wireless power transmitter and the wireless power receiver, based on position information detected by the position detector. | 05-08-2014 |
20140203662 | WIRELESS POWER REPEATER AND METHOD THEREOF - Disclosed is a wireless power transmission apparatus to wirelessly transmit power to a wireless power receiving apparatus by using resonance. The wireless power transmission apparatus includes a transmission part including a transmission coil to receive the power from a power supply to generate a magnetic field, a transmission resonance coil to transmit power received therein from the transmission coil, and a plurality of repeating coils placed in the transmission resonance coil to repeat the power, a detection part to detect a position of the wireless power receiving apparatus placed on the transmission part, and a controller to determine a repeating coil corresponding to the position of the wireless power receiving apparatus and perform a control operation to transmit power through the repeating coil. | 07-24-2014 |
20140246920 | WIRELESS POWER TRANSMITTER, WIRELESS POWER RECEIVER AND IMPEDENCE CONTROL METHOD - Disclosed is a wireless power transmitter which transmits power through a wireless power receiver to a load side. The wireless power transmitter includes a power source for generating AC power; a transmission coil for wirelessly transmitting the AC power to a reception coil of the wireless power receiver; and a detecting unit for detecting a coupling state between the transmission coil and the reception coil. | 09-04-2014 |
20150022149 | WIRELESS POWER RECEIVER AND METHOD OF MANAGING THEREOF - A receiver to wirelessly receive power from a transmitter, and including a receiving unit to receive AC power from the transmitter; a rectifying unit to rectify the received AC power to DC power, a power management unit to manage power to be transferred to a load based on the rectified DC power and a DC-DC converter to supply a DC voltage required by the load, or to the load with the rectified DC power. The power management unit generates and transmits a control signal to adjust the power transferred to the load based on the rectified DC power. | 01-22-2015 |
20150077048 | WIRELESS POWER RECEIVER AND POWER CONTROL METHOD THEREOF - Disclosed is a wireless power receiver for transferring power received from a wireless power transmitter to a load. The wireless power receiver includes a reception coil to receive AC power from the wireless power transmitter; a rectifying unit to rectify the received AC power into DC power; and a charging management unit to control DC power applied to the load by comparing the DC power with a threshold value. | 03-19-2015 |