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. The field sequence
detector generates field difference values in response to receiving the disrupted video signal. The field sequence analyzer analyzes these field difference values to determine one or more discontinuities within the discontinuous 2-3 field sequence. The field sequence generator generates one or more field sequence correction signals in response to this analysis. The multiple
delay tap circuit applies these correction signals to a video signal to generate an undisrupted video signal having a continuous 2-3 field sequence. The 2-3
field pattern fixer can optionally includes a First-In-First-Out (FIFO) memory and a time code
comparator, which can be used to store a multitude of the correction signals during the
first pass of the two-pass mode, and for
synchronizing the application of each of the correction signals to the duplicated disrupted video signal during the second pass of the two-pass mode.