发明名称 |
Color image pickup apparatus for progressive scanning video signal |
摘要 |
A color image pickup apparatus includes a photo-to-electric conversion section subjected to progressive scanning. A first delay circuit defers an output signal of the photo-to-electric conversion section. A first adder combines the output signal of the photo-to-electric conversion section and an output signal of the first delay circuit. A second delay circuit defers the output signal of the first delay circuit. A second adder combines the output signal of the photo-to-electric conversion section and an output signal of the second delay circuit. A third delay circuit defers an output signal of the first adder. A first subtracter implements subtraction between the output signal of the first adder and an output signal of the third delay circuit. A fourth delay circuit defers an output signal of the second adder. A second subtracter implements subtraction between the output signal of the second adder and an output signal of the fourth delay circuit. A first sign change circuit inverts a sign of an output signal of the first subtracter. A first selector periodically and alternately selects one of the output signal of the first subtracter and an output signal of the first sign change circuit. A second sign change circuit inverts a sign of an output signal of the second subtracter. A second selector periodically and alternately selects one of the output signal of the second subtracter and an output signal of the second sign change circuit. Two different color-difference signals are generated in response to an output signal of the first selector and an output signal of the second selector.
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申请公布号 |
US6271881(B1) |
申请公布日期 |
2001.08.07 |
申请号 |
US19980066783 |
申请日期 |
1998.04.27 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
TAKAHASHI YUICHIROU;KANAZAWA ATSUTO;KARIYA MASAKI;SERIZAWA MASAYUKI;TAMURA KENJI;KOBAYASHI KIKUO;NAKAYAMA MASAAKI;TANAKA HIROMICHI |
分类号 |
H04N9/07;H04N9/04;(IPC1-7):H04N3/14;H04N7/01 |
主分类号 |
H04N9/07 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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