H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 5/57 (2006.01) H04N 5/20 (2006.01)
Patent
CA 2087201
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.
Borden Ladner Gervais Llp
Matsushita Electric Industrial Co. Ltd.
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