Abstract: An apparatus includes an extractor, a first subtractor, a second subtractor, a third subtractor, an offset generator and an adder. The extractor receives the color pixel and to provides a first, a second, and a third image value, wherein the first, the second, and the third image values are associated with the brightness of the color pixel. The first subtractor calculates a first offset between the first image value and a first expected image value. The second subtractor calculates a first difference between the first and the second image values. The third subtractor calculates a second difference between the first and the third image values. The offset generator defines a linear relation based on the first offset and the first image value, and generates a second and a third offset. The adder receives the second offset, the third offset, the second image value and the third image value to generate a second and a third expected image value.

Abstract: An adaptive de-interlacer can convert an interlaced video signal into a progressive video signal, and comprises a motion detector, an intra-field interpolator, an inter-field interpolator, a motion aliasing artifact detector and a blending unit. The motion detector generates an alpha value for each interpolated pixel in a current field of the interlaced video signal based on successive fields of the interlaced video signal. The intra-field interpolator outputs an intra-field interpolated pixel based on the current field, and the inter-field interpolator also outputs an inter-field interpolated pixel based on the successive fields. Afterward, the motion aliasing artifact detector detects whether the interpolated pixel is located in a motion aliasing area.

Abstract: A de-interlacing device having a pattern recognizing unit and a method therefor for receiving an interlaced image and outputting a non-interlaced image. The de-interlacing device includes a first de-interlacing unit, a second de-interlacing unit and a pattern recognizing unit. The pattern recognizing unit receives the interlaced image, recognizes whether or not the interlaced image has an obviously horizontal pattern, outputting the interlaced image to the first de-interlacing unit if yes, and outputting the interlaced image to the second de-interlacing unit if not. The first de-interlacing unit and the second de-interlacing unit use different de-interlacing methods. The first or second de-interlacing unit receives the interlaced image outputted from the pattern recognizing unit and outputs the non-interlaced image accordingly.

Abstract: A backlight controller generating a scaling factor for scaling the intensity of a backlight illuminating a LCD (LCD) is provided. The backlight controller includes a histogram generator and a scaling factor selector. The histogram generator generates a histogram in response to an input frame image of the LCD. The scaling factor selector includes a luminance distortion estimator and a loop controller. The luminance distortion estimator estimates a luminance distortion for each candidate scaling factor with reference to the histogram. The loop controller selects a scaling factor among the corresponding to a maximum acceptable distortion among the estimated luminance distortions, so as to scale the intensity of the backlight.

Abstract: An ambient light system applied in a TV including a display panel, a loudspeaker and a plurality of ambient light sources includes an audio level detector, a pattern generator, and an ambient light controller. The audio level detector detects the level of an input audio signal to obtain a detected level. The pattern generator generates an ambient light pattern based on the detected level by reference to a selected operation mode. The ambient light controller controls the intensity of one or more ambient light sources based on the ambient light pattern.

Abstract: This invention provides a method and computer-readable medium for detecting flesh-tone regions in pictures, images, and videos. The method includes (a) defining a flesh-tone axis in a color space coordinate system, wherein the flesh-tone axis passes through both the center of a flesh-tone region and the origin of the color space coordinate system; (b) calculating a perpendicular point, wherein the perpendicular point is the point on the flesh-tone axis having the shortest distance to an input pixel; (c) calculating a first distance and a second distance based on the coordinates of the input pixel, the perpendicular point and the center of the flesh-tone region; and (d) determining whether the input pixel is in the flesh-tone region based on the first distance and second distance.

Abstract: A de-interlacing device and method therefor for de-interlacing an image. The image includes at least one field, which includes a plurality of pixels arranged in an M*N matrix. The de-interlacing device is for determining the brightness value of a current pixel and includes the following elements. A motion detector is for determining whether or not the current pixel is motional. An edge detector detects an edge type of the current pixel if the current pixel is motional. An edge-based de-interlacer includes a reference pixel determiner for determining a plurality of edge reference pixels having the strongest correlation with the current pixel according to the edge type, and a brightness value determiner for deriving the brightness value of the current pixel according to the edge reference pixels.

Abstract: An image compression and decompression method encodes and decodes pixel data based on a color conversion method. Base on the relationships of corresponding color components of two adjacent pixels, the corresponding color components are encoded either by a white and black modification, a down-sampling or an edge modification. Based on the relationships of encoded color components of the two adjacent pixels, the corresponding encoded color components are decoded either by an inverse white and black modification, an up-sampling or an inverse edge modification.

Abstract: A method and a circuit for resolving the out-of-phase problem between a color burst signal and a sub-carrier signal of a television system. A delay means is used which leads to the synchronization of the color burst signal and the sub-carrier signal such that a subsequent color demodulator can demodulate correct color signals. Therefore, the locking of the two signals will be fastened without any excessively large circuit hardware.

Abstract: A method of reducing frame buffer size for driving a pixel includes converting a first color signal at a first color space of the pixel into a second color signal at a second color space, storing the second color signal into a memory, reading the second color signal from the memory and converting the second color signal into a first color signal, and driving the pixel according to the first color signal transferred from the second color signal and a target gray level.

Abstract: A method for controlling the contrast of an image is provided. The method comprising the steps of: providing display data of the frame, wherein the display data of the frame corresponds to a plurality of pixels; obtaining a gray-level value of at least one pixel according to the display data of the frame; calculating a probability function of at least one gray-level value in a predetermined range; and determining adjustment of the at least one gray-level value in the predetermined range according to the probability function.

Abstract: A de-interlacing device having a pattern recognizing unit and a method therefor for receiving an interlaced image and outputting a non-interlaced image. The de-interlacing device includes a first de-interlacing unit, a second de-interlacing unit and a pattern recognizing unit. The pattern recognizing unit receives the interlaced image, recognizes whether or not the interlaced image has an obviously horizontal pattern, outputting the interlaced image to the first de-interlacing unit if yes, and outputting the interlaced image to the second de-interlacing unit if not. The first de-interlacing unit and the second de-interlacing unit use different de-interlacing methods. The first or second de-interlacing unit receives the interlaced image outputted from the pattern recognizing unit and outputs the non-interlaced image accordingly.

Abstract: A de-interlacing device and method therefor for de-interlacing an image. The image includes at least one field, which includes a plurality of pixels arranged in an M*N matrix. The de-interlacing device is for determining the brightness value of a current pixel and includes the following elements. A motion detector is for determining whether or not the current pixel is motional. An edge detector detects an edge type of the current pixel if the current pixel is motional. An edge-based de-interlacer includes a reference pixel determiner for determining a plurality of edge reference pixels having the strongest correlation with the current pixel according to the edge type, and a brightness value determiner for deriving the brightness value of the current pixel according to the edge reference pixels.