POWER FEEDING DEVICE, WIRELESS POWER FEEDING SYSTEM USING THE SAME AND WIRELESS POWER FEEDING METHOD
0 Assignments
0 Petitions
Accused Products
Abstract
An object is to provide a power feeding device, a power feeding system, and a power feeding method which are more convenient for a power feeding user at the power receiving end. The power feeding device includes a means of controlling a frequency of a power signal transmitted to a power receiver, based on a proportion of signals, among power signals output to an antenna circuit, that return from the power receiver to the antenna circuit without feeding power to the power receiver.
21 Citations
12 Claims
-
1. (canceled)
-
2. A power receiver comprising:
-
a display panel configured to display an image; a transmission/reception circuit portion configured to transmit and receive electromagnetic waves; a signal processing circuit portion configured to process electrical signals of the transmitted and received electromagnetic waves; a power storage portion comprising a secondary battery; and a power load portion electrically connected to the power storage portion, wherein the display panel is overlapped with the transmission/reception circuit portion, the signal processing circuit portion, the power storage portion, and the power load portion. - View Dependent Claims (3, 4, 5)
-
-
6. A power feeding system comprising:
-
a power receiver; and a power feeding device, wherein the power receiver comprises; a display panel configured to display an image; a transmission/reception circuit portion configured to transmit and receive electromagnetic waves; a signal processing circuit portion configured to process electrical signals of the transmitted and received electromagnetic waves; a power storage portion comprising a secondary battery; and a power load portion electrically connected to the power storage portion, wherein the power feeding device comprises; a first oscillation circuit; a mixer; a coupler; a determination circuit; and a second oscillation circuit; and wherein the display panel is overlapped with the transmission/reception circuit portion, the signal processing circuit portion, the power storage portion, and the power load portion, wherein the coupler is configured to detect a signal reflected from the power receiver, wherein the determination circuit is configured to output a reflection coefficient to the second oscillation circuit, the reflection coefficient being based on the signal detected by the coupler, and wherein the mixer is configured to output a mixed signal to an antenna circuit, the mixed signal being generated by mixing a first power signal generated by the first oscillation circuit and a second power signal generated by the second oscillation circuit. - View Dependent Claims (7, 8, 9, 10, 11, 12)
-
Specification