Abstract: A control device that controls a load amount of a load device that receives supply of power output from a DC power supply is provided. The control device includes a setting unit that compares a voltage ratio in which a denominator is set to a first input voltage value indicating a magnitude of an input voltage applied when the load device is set to a first load amount, and a numerator is set to a second input voltage value based on a magnitude of an input voltage applied to the load device when it is set to a second load amount obtained by multiplying the first load amount by a predetermined first coefficient, and a determination value in accordance with the first coefficient, and executes a load amount setting process in which the load device is set to a new first load amount, until a predetermined condition is satisfied.

Abstract: A wireless power feeding system is provided, comprising a power transmission apparatus configured to transmit predetermined transmission power and a power reception apparatus configured to receive the transmission power and generate input voltage according to the transmission power, wherein the power transmission apparatus includes a power transmission control unit configured to control an amount of the transmission power, the power transmission control unit is configured to receive a modulation signal from the power reception apparatus, and to reduce the transmission power in a case where the modulation signal is not received for a predetermined period after receiving the previous modulation signal, and the power transmission apparatus and the power reception apparatus are configured to control the input voltage to be larger than a predetermined first threshold and below a second threshold which is larger than the first threshold.

Abstract: To provide a frame control apparatus for controlling communication frames of a power feeding system, provided is a frame control apparatus that controls communication frames of a wireless power feeding system, the frame control apparatus including a reference clock generating section that generates a predetermined reference clock signal; a demodulating section that operates according to the reference clock signal and demodulates a synchronization command for synchronizing the communication frames; a rate calculating section that counts pieces of rate reference data having a predetermined length and included in the synchronization command, based on the reference clock signal, to calculate a rate reference value used for reference; and a frame control section that controls the communication frames based on the rate reference value.

Abstract: A wireless power feeding system is provided, comprising a power transmission apparatus configured to transmit predetermined transmission power and a power reception apparatus configured to receive the transmission power and generate input voltage according to the transmission power, wherein the power transmission apparatus includes a power transmission control unit configured to control an amount of the transmission power, the power transmission control unit is configured to receive a modulation signal from the power reception apparatus, and to reduce the transmission power in a case where the modulation signal is not received for a predetermined period after receiving the previous modulation signal, and the power transmission apparatus and the power reception apparatus are configured to control the input voltage to be larger than a predetermined first threshold and below a second threshold which is larger than the first threshold.

Abstract: To provide a frame control apparatus for controlling communication frames of a power feeding system, provided is a frame control apparatus that controls communication frames of a wireless power feeding system, the frame control apparatus including a reference clock generating section that generates a predetermined reference clock signal; a demodulating section that operates according to the reference clock signal and demodulates a synchronization command for synchronizing the communication frames; a rate calculating section that counts pieces of rate reference data having a predetermined length and included in the synchronization command, based on the reference clock signal, to calculate a rate reference value used for reference; and a frame control section that controls the communication frames based on the rate reference value.

Abstract: Provided is a charging apparatus including a charging section that receives an input signal, charges a battery based on the input signal, and includes a feedback loop that performs feedback control to charge the battery with a predetermined target value; a saturation detecting section that detects saturation of the feedback loop; and a target adjusting section that adjusts the target value, based on a detection result of the saturation detecting section.

Abstract: In a display-integrated panel having first and second electrodes crossing each other and being operable to display a gray scale image, a position indicated by an electronic pen is detected by a method including the step of displaying information on a display panel by repeating a step of displaying one frame.