G - Physics – 11 – B
Patent
G - Physics
11
B
352/18
G11B 5/00 (2006.01) H04N 5/14 (2006.01) H04N 9/79 (2006.01) H04N 9/797 (2006.01)
Patent
CA 2036177
Apparatus is disclosed for processing video information which is reproduced from a magnetic recording medium in a video cassette recorder. The luminance portion of the video signal, which is "folded" about a sampling frequency carrier before recording on magnetic tape, is unfolded after being read from the magnetic tape to restore the bandwidth of the signal, and is applied in parallel through horizontal and vertical comb filters. The combined output of the horizontal comb filter and the vertical comb filter may include incompletely cancelled horizontal and vertical components of the folding frequency and sidebands due to the effects of picture contents. Edge detector means receptive to the unfolded video signal responds to an encountered brightness edge, and generates a signal which varies the proportions of the video outputs of the horizontal and vertical comb filters in the combined output.
Ko Jung-Wan
Schnitzler Raymond A.
Strolle Christopher H.
R. William Wray & Associates
Samsung Electronics Co. Ltd.
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