Abstract: An improved method and apparatus for scanning of anamorphic film utilizes increased number of scans and combination of scan lines for video output generation. A progressive raster scan is made of the film and stored in a frame memory. The spacing between the scan lines is made smaller than for the conventional scanning of an anamorphic image. In the preferred embodiment, the spacing between the scan lines for a 2:1 anamorphic image equals the spacing for scanning of a non-anamorphic image. The scan lines are retrieved from the memory and combined, preferably with the two nearest neighbors of the scan line. Optionally, the combined lines are weighted, preferably with the center scan line having larger weight. Subsequent video output lines are formed by repeating the process. Progressive video output or interlace output is provided as desired.

Abstract: Systems and methods are provided for allowing a user to correct a discontinuous 2-3 field sequence within a disrupted video signal. A 2-3 field pattern fixer can be operated in a one-pass mode and/or a two-pass mode. In the one-pass mode, the disrupted video signal is analyzed to generate correction information, which is used to correct the disrupted video signal as it passes through the 2-3 pattern fixer, resulting in an undisrupted video signal with a continuous 2-3 field sequence. In the two-pass mode, the disrupted video signal is analyzed to generate correction information, which is then stored. This correction information is then used to correct a duplicate of the disrupted video signal, resulting in an undisrupted video signal with a continuous 2-3 field sequence. In this connection, the 2-3 field pattern fixer includes a field sequence detector, a field sequence analyzer, a field sequence generator and a multiple delay tap circuit.

Abstract: Systems and methods are provided for allowing a user to correct a discontinuous 2-3 field sequence within a disrupted video signal. A 2-3 field pattern fixer can be operated in a one-pass mode and/or a two-pass mode. In the one-pass mode, the disrupted video signal is analyzed to generate correction information, which is used to correct the disrupted video signal as it passes through the 2-3 pattern fixer, resulting in an undisrupted video signal with a continuous 2-3 field sequence. In the two-pass mode, the disrupted video signal is analyzed to generate correction information, which is then stored. This correction information is then used to correct a duplicate of the disrupted video signal, resulting in an undisrupted video signal with a continuous 2-3 field sequence. In this connection, the 2-3 field pattern fixer includes a field sequence detector, a field sequence analyzer, a field sequence generator and a multiple delay tap circuit.

Abstract: Systems and methods are provided for allowing a user to correct a discontinuous 2-3 field sequence within a disrupted video signal. A 2-3 field pattern fixer can be operated in a one-pass mode and/or a two-pass mode. In the one-pass mode, the disrupted video signal is analyzed to generate correction information, which is used to correct the disrupted video signal as it passes through the 2-3 pattern fixer, resulting in an undisrupted video signal with a continuous 2-3 field sequence. In the two-pass mode, the disrupted video signal is analyzed to generate correction information, which is then stored. This correction information is then used to correct a duplicate of the disrupted video signal, resulting in an undisrupted video signal with a continuous 2-3 field sequence. In this connection, the 2-3 field pattern fixer includes a field sequence detector, a field sequence analyzer, a field sequence generator and a multiple delay tap circuit.

Abstract: An improved method and apparatus for color correction normalizes two of the three color signals as a function of the third. In the preferred embodiment, an image comprising red, green and blue (RGB) signals are converted to a luminance Y signal, a saturation signal and a hue signal. The luminance and saturation signals are normalized as a function of hue. In the most preferred embodiment, for all fully saturated colors, the luminance values are normalized to a value of 0.5, and the saturation values to unity for all values of hue. The normalized values of saturation and luminance are utilized with the hue value in a secondary color corrector. The color corrected values of saturation and luminance are denormalized as a function of color corrected hue. Optionally, the color corrected luminance, saturation and hue may be converted to RGB signals for output. In one aspect of this invention, the normalized luminance signal is not used for relatively small values of saturation.