发明名称 |
Automatic image-tone control circuit and method for controlling brightness of image |
摘要 |
In a tone control circuit of luminance signals, input-output characteristic having an arbitrary line graph is obtained by plural gradient adjusting circuits in response to frequencies of brightness of the luminance signals which are detected by plural IRE circuits.
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申请公布号 |
US5307166(A) |
申请公布日期 |
1994.04.26 |
申请号 |
US19920973917 |
申请日期 |
1992.11.10 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SADAMATSU, HIDEAKI |
分类号 |
H04N5/20;(IPC1-7):H04N5/14;H04N5/202 |
主分类号 |
H04N5/20 |
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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