Abstract: A method for operating a non-volatile flash memory with a write protection mechanism is provided. The method comprises the steps as follow. A command is issued. When the command is a safeguard information modification command, only when the safeguard information modification command matches the specific combination of the plurality of modification instructions, a safeguard information is allowed to be modified. When the command is a flash memory data modification command, only when both the status register protection information and the safeguard information indicate that the memory block/sector is not under write-protection, the memory block/sector is allowed to be modified according to the flash memory data modification command.

Abstract: A video/audio display system includes a buffering module, a playing module and a controlling module. The buffering module temporarily stores video/audio data, which occupy a storage capacity of the buffering module. The playing module is electrically connected with the buffering module to play the video/audio data at a playing speed. The controlling module is electrically connected with the buffering module and the play module. A video/audio display method is also disclosed.

Abstract: The present invention provides a method for rotating YUV4:2:0 image in a digital display device, such as TV image system. A YUV4:2:0 image is separated to a Y division matrix and a U and V division matrix. Then the Y division is performed a rotation matrix calculation. And the U and V division matrix is performed a reverse rotation matrix calculation. A rotated YUV4:2:0 image is obtained by combining the processed Y division matrix and the processed U and V division matrix.

Abstract: A method for compensating image chromatism is provided. As each RGB channel has different wavelength and refractive index, image dispersion will always occur when capturing an image from a lens. If the image dispersion is excessive, it will produce image chromatism more easily. In order to solve that, we employ the disclosed method to improve the image dispersion of each RGB channel when capturing the image from the lens using a computer program. We can further achieve the goal of image chromatism compensation.

Abstract: The present invention provides a method for rotating YUV4:2:0 image in a digital display device, such as TV image system. A YUV4:2:0 image is separated to a Y division matrix and a U and V division matrix. Then the Y division is performed a rotation matrix calculation. And the U and V division matrix is performed a reverse rotation matrix calculation. A rotated YUV4:2:0 image is obtained by combining the processed Y division matrix and the processed U and V division matrix.

Abstract: A method for compensating image chromatism is provided. As each RGB channel has different wavelength and refractive index, image dispersion will always occur when capturing an image from a lens. If the image dispersion is excessive, it will produce image chromatism more easily. In order to solve that, we employ the disclosed method to improve the image dispersion of each RGB channel when capturing the image from the lens using a computer program. We can further achieve the goal of image chromatism compensation.

Abstract: The specification discloses a lens for scanners. At the same time of shortening the optical paths among devices in the scanning module of the scanner, the size of the lens increases within a limited range so that the scanner still has a compact dimension. The lens has a cylindrical shape. The rims of the two opposite end surfaces are comprised of two opposite lines and two opposite arcs. The centers of the arcs are located at correspondingly the same positions on the end surfaces. Therefore, the beam can enter one end surface and leave from the other.