Abstract: A TV signal determining system utilized for determining a type of a TV signal includes: a detection unit, for utilizing a predetermined profile to detect if the TV signal has a signal segment corresponding to the predetermined profile to generate a detection result signal; and a determining unit, coupled to the detection unit, for determining the type of the TV signal according to the detection result signal. A TV signal processing system utilizing the TV signal determining system and a related method are also disclosed.

Abstract: A method for detecting SECAM-L signals is disclosed. First, a SECAM-L signal is received and demodulated into a demodulation signal. Then high frequency components of the demodulation signal are filtered out and a low frequency signal, including many sync pulses and many data pulses, is obtained. Next, the low frequency signal is inversion into an inversion signal, having many inversion sync pulses and many inversion data pulses. Afterwards a voltage level of the inversion signal is detected continuously whether it is a lowest level. After that, the lowest level is determined whether belonging to the inversion sync pulses when the voltage level of the inversion signal is the lowest level, and a detection signal is outputted. When the lowest level belongs to the inversion sync pulses, a voltage level of the detection signal is high, and the demodulation signal is an inversion SECAM-L demodulation signal.

Abstract: This invention provides a method and computer-readable medium for detecting flesh-tone regions in pictures, images, and videos. First, a flesh-tone axis is defined in a color space coordinate system, the flesh-tone axis passing through both the center of a flesh-tone region and the origin of the color space coordinate system. A perpendicular point, is then calculated on the flesh-tone axis as being the point having the shortest distance to an input pixel. A first distance and a second distance are then calculated based on the coordinates of the input pixel, the perpendicular point and the center of the flesh-tone region. The determination as to whether the input pixel is in the flesh-tone region can be made based on the first distance and second distance.

Abstract: A vertical blanking interval slicer includes: an analog-to-digital conversion unit for performing analog-to-digital conversion on original video data in the vertical blanking interval to generate a digital video data; a mode setting unit for setting a data rate according to the original video data in the vertical blanking interval; a digital phase lock loop unit, coupled to the analog-to-digital conversion unit and the mode setting unit, for generating a target clock according to the data rate; a sampler, coupled to the analog-to-digital conversion unit and the digital phase lock loop unit, for sampling the digital video data to generate a target video data of the original video data in the vertical blanking interval; an equalizer, coupled to the sampler and the digital phase lock loop unit, for equalizing the target video data to generate an adjusted target video data.

Abstract: A three-dimensional color difference value adjusting method for adjusting a selected region of an image is provided. The method includes the following steps. First, a plurality of color difference adjusting values corresponding to a plurality of reference brightness values are received. Next, target color difference adjusting value corresponding to brightness value of each pixel within the selected region is estimated according to the color difference adjusting values. Then, color difference value of each pixel within the selected region is adjusted according to target color difference adjusting value of each pixel within the selected region.

Abstract: A method for color transient improvement includes generating an angle value according to an included angle of two color components in a specific color space domain, and generating a transient enhancement signal according to the angle value. Furthermore, a color transient improvement circuit is provided. The color transient improvement circuit includes an angle calculator for generating an angle value according to an included angle of two color components in a specific color space domain, and a processor coupled to the angle calculator for generating a transient enhancement signal according to the angle value.

Abstract: A method for detecting SECAM-L signals is disclosed. First, a SECAM-L signal is received and demodulated into a demodulation signal. Then high frequency components of the demodulation signal are filtered out and a low frequency signal, including many sync pulses and many data pulses, is obtained. Next, the low frequency signal is inversion into an inversion signal, having many inversion sync pulses and many inversion data pulses. Afterwards a voltage level of the inversion signal is detected continuously whether it is a lowest level. After that, the lowest level is determined whether belonging to the inversion sync pulses when the voltage level of the inversion signal is the lowest level, and a detection signal is outputted. When the lowest level belongs to the inversion sync pulses, a voltage level of the detection signal is high, and the demodulation signal is an inversion SECAM-L demodulation signal.

Abstract: A TV signal determining system utilized for determining a type of a TV signal includes: a detection unit, for utilizing a predetermined profile to detect if the TV signal has a signal segment corresponding to the predetermined profile to generate a detection result signal; and a determining unit, coupled to the detection unit, for determining the type of the TV signal according to the detection result signal. A TV signal processing system utilizing the TV signal determining system and a related method are also disclosed.

Abstract: A binary data comparison method is performed as follows. First, bits of a plurality of binary data are provided, and bit x of the plurality of binary data are summed, where x=n, n?1, . . . , 1 or 0, and bit x is the most significant bit (MSB). If the sum is equal to 1, the binary data having bit x=1 is determined as the maximum. If the sum is larger than or equal to 2, the binary data having bit x=0 is masked by setting all bits of the binary data to zero. The above processes are repeated in which bit x is iterated by bit x?1 if the sum is not equal to 1 until the maximum is found.

Abstract: A hue adjustor and method for adjusting hues for specific colors in an image are provided. The hue adjustor includes a CORDIC unit (coordinated rotation digital computer unit), a color partition operation unit and a hue rotation unit. The color partition operation unit is coupled to the CORDIC unit and used to compute a new hue angle corresponding to a chrominance signal when falling in an adjustment area that is generated based on a control signal. The hue rotation unit is coupled to the color partition operation unit and used to rotate the chrominance signal by the new hue angle.

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.