发明名称 |
[AUTOMATIC CONTRAST LIMITING CIRCUIT AND METHOD THEREOF WITH SPATIAL DOMAIN INFINITE IMPULSE RESPONSE FILTER ] |
摘要 |
An automatic contrast limiting circuit and method thereof with spatial domain infinite impulse response filter are disclosed. A spatial domain infinite impulse response filter is adapted to generate an output value of the spatial domain infinite impulse response filter related to an input signal. A peak value detector is adapted to detect the peak output value of the spatial domain infinite impulse response filter during a predetermined recording interval. A contrast evaluator is used to evaluate the required contrast value referring to a predetermined threshold value and the output value of the spatial domain infinite impulse response filter.
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申请公布号 |
US2005111750(A1) |
申请公布日期 |
2005.05.26 |
申请号 |
US20040708015 |
申请日期 |
2004.02.03 |
申请人 |
SHAN PEI-MING;SUN MING-CHENG |
发明人 |
SHAN PEI-MING;SUN MING-CHENG |
分类号 |
H04N5/57;G06K9/40;G09G5/00;H04N5/20;H04N5/52;(IPC1-7):G06K9/40 |
主分类号 |
H04N5/57 |
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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