摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A photoelectric conversion structure includes a light energy plate, a thermoelectric cooling element and a control circuit. The light energy plate is suitable to receive light energy and convert the light energy to electrical energy. The thermoelectric cooling element has a hot side and a cold side. The hot side faces the light energy plate. The control circuit is electrically connected to the light energy plate and the thermoelectric cooling element. The control circuit is suitable to provide the electrical energy for the thermoelectric cooling element.
摘要:
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. γ (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)).
摘要:
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.