发明名称 |
VIDEO SIGNAL JUDGMENT APPARATUS AND METHOD |
摘要 |
A video signal judgment apparatus for reliably detecting a film video signal. A difference is calculated between a color difference signal B−Y delayed by one field and output from a 1−field delay circuit (3) by a subtractor (5) and a color difference signal B−Y before being delayed. In case of a signal of 4 : 2 : 0 format, color difference signals at positions corresponding to respective fields constituting a frame have an identical value. An output of the subtractor (5) is 0 when the input is a signal of the field of a corresponding frame and is not 0 when the input is a signal of a field of a different frame. An adder (6) adds the output of the subtractor (5) by one field. A comparator (7) outputs 1 when the added value is greater than a reference value and 0 when the added value is smaller than the reference value. A controller (8) decides whether the input signal is a film video signal according to the pattern of 1 and 0 output from the comparator (7). The present invention can be applied to a DVD player.
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申请公布号 |
WO03015422(A1) |
申请公布日期 |
2003.02.20 |
申请号 |
WO2002JP06892 |
申请日期 |
2002.07.08 |
申请人 |
SONY CORPORATION;MORITA, HIDEO |
发明人 |
MORITA, HIDEO |
分类号 |
H04N5/44;H04N7/01;H04N9/64;(IPC1-7):H04N11/00;H04N9/00 |
主分类号 |
H04N5/44 |
代理机构 |
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地址 |
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