A power supply includes a boost circuit having a first boost circuit configured to output a first driving voltage to be supplied to the display panel by stepping unit an input voltage and a second boost circuit configured to output a second driving voltage to be supplied to the display panel by stepping down the input voltage, and a correction circuit configured to output a correction signal based on a result obtained by sensing the input voltage, and controls output efficiency of the boost circuit based on the input voltage and current sensed from the display panel.

A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.

A display apparatus and a compensation circuit are provided. The display apparatus includes a display screen, a sound reproduction device and a power supply circuit. The power supply circuit includes a rectifier circuit and a compensation circuit. The rectifier circuit is used to convert an alternating current to a direct current. The compensation circuit is used to compensate for a parasitic signal of a synchronous rectification MOSFET in the rectifier circuit, thereby reducing heat generated by the MOSFET.

In a processing method of image data in accordance with an embodiment of the present invention, a processor of an information processing apparatus calculates a heat quantity value when projecting and displaying image data, determines the image data as an image to be projected and displayed when the heat quantity value does not reach a threshold value, and generates processed image data so that a heat quantity is to be lower than the heat quantity value and determines the processed image data as an image to be projected and displayed when the heat quantity value exceeds the threshold value.

This display apparatus comprises: a plurality of pixels arrayed along a plurality of rows and a plurality of columns; a plurality of signal lines connected to the plurality of pixels respectively for each row; a drive circuit for generating a plurality of control signals to selectively turn the plurality of pixels on and off by rows, the drive circuit applying the control signals to the signal lines; a power supply circuit for supplying the drive circuit with a voltage for generating each control signal; and at least one inductor connected between the power supply circuit and the plurality of signal lines.

In a processing method of image data in accordance with an embodiment of the present invention, a processor of an information processing apparatus calculates a heat quantity value when projecting and displaying image data, determines the image data as an image to be projected and displayed when the heat quantity value does not reach a threshold value, and generates processed image data so that a heat quantity is to be lower than the heat quantity value and determines the processed image data as an image to be projected and displayed when the heat quantity value exceeds the threshold value.

A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.

A method for determining and controlling performance of pre-charge operations of a plurality of source lines in an ESL system includes: obtaining voltage data of a plurality of lines of a frame to be displayed by a display module in the ESL system; determining whether pre-charge of the source lines in a rest period of a first line is required according to an amount of forthcoming voltage transitions to be generated on the source lines and accordingly obtaining a determination result; and controlling performance of pre-charge operations of the source lines in the rest period of the first line according to the determination result. When the amount of forthcoming voltage transitions to be generated on the source lines exceeds a predefined threshold, pre-charge of the source lines in the rest period of the first line is determined as required.

A power supply includes a boost circuit having a first boost circuit configured to output a first driving voltage to be supplied to the display panel by stepping unit an input voltage and a second boost circuit configured to output a second driving voltage to be supplied to the display panel by stepping down the input voltage, and a correction circuit configured to output a correction signal based on a result obtained by sensing the input voltage, and controls output efficiency of the boost circuit based on the input voltage and current sensed from the display panel.

The present invention provides a display device (smartphone (3)) that realizes less power consumption for refreshing a video. The smartphone (3) includes: a host (2) configured to obtain image data which is to be supplied to an LCD panel (31); and a driver (32) configured to transmit, to the LCD panel (31), the image data so as to refresh a video which is displayed by the display panel, the driver (32) being configured to refresh a video, displayed on an extended region (312), at a refresh rate lower than that at which the driver (32) refreshes data displayed on a main region (311).