Abstract: A transient voltage compensation apparatus and a power supply using the same are provided. The power supply mainly uses a compensation circuit coupled between an input terminal and an output terminal of a power converter. When a load of the power supply is switched in a very short time, a power coupled to the compensation circuit is retrieved to compensate the output of the power supply, such that the output voltage is kept steady, and the transient response of the power supply is increased.

Abstract: A transient voltage compensation apparatus and a power supply using the same are provided. The power supply mainly uses a compensation circuit coupled between an input terminal and an output terminal of a power converter. When a load of the power supply is switched in a very short time, a power coupled to the compensation circuit is retrieved to compensate the output of the power supply, such that the output voltage is kept steady, and the transient response of the power supply is increased.

Abstract: A transient voltage compensation apparatus and a power supply using the same are provided. The power supply mainly uses an energy transferring circuit coupled between an input terminal and an output terminal of a power converter. When a load of the power supply is switched in a very short time, a power coupled to the energy transferring circuit is retrieved to compensate the output of the power supply, such that the output voltage is kept steady, and the transient response of the power supply is increased.

Abstract: The invention relates to a buck converter including a first high-side switch circuit having an input terminal electrically connected to a first power input terminal, a control terminal electrically connected to a first control signal source, and an output terminal; a second high-side switch circuit having an input terminal electrically connected to a second power input terminal, a control terminal electrically connected to a second control signal source, and an output terminal electrically connected to the output terminal of the first high-side switch; a lower-side switch circuit having a first terminal electrically connected to the output terminal of the first high-side switch and a second terminal electrically connected to a reference power terminal; and a filter electrically connected to the output terminal of the first high-side switch and a power output terminal, wherein the first and second high-side switch circuits will not turn on at the same time.

Abstract: A transient voltage compensation apparatus and a power supply using the same are provided. The power supply mainly uses an energy transferring circuit coupled between an input terminal and an output terminal of a power converter. When a load of the power supply is switched in a very short time, a power coupled to the energy transferring circuit is retrieved to compensate the output of the power supply, such that the output voltage is kept steady, and the transient response of the power supply is increased.

Abstract: A level shifter includes a reference voltage level and a voltage dividing circuit. The voltage dividing circuit is connected to the reference voltage level, a first voltage level, and a second voltage level. The second voltage level is between the reference voltage level and the first voltage level.

Abstract: The invention relates to a buck converter including a first high-side switch circuit having an input terminal electrically connected to a first power input terminal, a control terminal electrically connected to a first control signal source, and an output terminal; a second high-side switch circuit having an input terminal electrically connected to a second power input terminal, a control terminal electrically connected to a second control signal source, and an output terminal electrically connected to the output terminal of the first high-side switch; a lower-side switch circuit having a first terminal electrically connected to the output terminal of the first high-side switch and a second terminal electrically connected to a reference power terminal; and a filter electrically connected to the output terminal of the first high-side switch and a power output terminal, wherein the first and second high-side switch circuits will not turn on at the same time.

Abstract: A backlight device capable of increasing luminance efficiency includes a power transformation device having a primary end and a secondary end for transforming current received by the primary end and outputting transformed current from the secondary end. The backlight device further includes a double-wind coupling element including a first coupling element and a second coupling element coupled to terminals of the secondary end, for adjusting current between the first coupling element and the second coupling element, and a cold cathode fluorescent lamp coupled to the first coupling element and the second coupling element, for making current flowing into the cold cathode fluorescent equal to current flowing out from the cold cathode fluorescent according to adjusted current between the first coupling element and the second coupling element.

Abstract: A display apparatus outputs a video frame according to ambient brightness. The display apparatus includes an ambient sensor for sensing the ambient brightness of the display apparatus to generate an ambient brightness sensing signal; and a control circuit, coupled to the ambient sensor, for dynamically adjusting display characteristics of the video frame according to the ambient brightness sensing signal without adjusting a light source of the display apparatus. ? (gamma) curve characteristics of the display apparatus can be adjusted to change the display characteristics (brightness and color temperature) of the outputted video frame without causing any damage on the light source hardware (such as the cold cathode fluorescent lamp (CCFL)).

Abstract: A method for displaying a video image includes: receiving the video image and performing a real-time detection upon the video image to detect at least a contour section in the video image; determining a compensation characteristic according to the contour section; adjusting pixel values of pixels corresponding to the contour section according to the compensation characteristic; and displaying the adjusted video image.