发明名称 BEAT SIGNAL CANCELLING
摘要 A magnetic reproducing apparatus is provided with an improved secondary beat signal cancel circuit for reducing a secondary beat signal of a low-frequency converted chroma signal leaked into a reproduced luminance signal without deteriorating vertical resolution at the edge of an oblique check signal. The secondary beat signal cancel operation is interrupted during a period in which no vertical correlation exists between the edge portions of two succeeding horizontal lines of the oblique check signal.
申请公布号 AU3222984(A) 申请公布日期 1985.03.07
申请号 AU19840032229 申请日期 1984.08.21
申请人 SONY CORP. 发明人 TOSHIHIKO KITAZAWA;ICHITARO SATO
分类号 H04N9/793;H04N9/64;H04N9/79;H04N9/83;H04N9/87 主分类号 H04N9/793
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