发明名称 |
Gamma correction circuit approximating non-linear digital conversion |
摘要 |
A gamma correction circuit for converting N-bit input data into M-bit output data by using a gamma correction curve approximated by a polygonal line having a plurality of straight line sections each having a different slope, the gamma correction circuit including a calculation circuit for executing conversion calculation for each the straight line section; and a control circuit for controlling the calculation circuit in accordance with a value of the input data so that the calculation circuit executes the conversion calculation for each the straight line section corresponding to the value.
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申请公布号 |
US5473372(A) |
申请公布日期 |
1995.12.05 |
申请号 |
US19940361456 |
申请日期 |
1994.12.21 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
NOBUOKA, KOSUKE;FUKATSU, TSUTOMU |
分类号 |
H04N5/202;(IPC1-7):H04N5/202 |
主分类号 |
H04N5/202 |
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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