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Picture information reading system

阅读:820发布:2023-09-03

专利汇可以提供Picture information reading system专利检索,专利查询,专利分析的服务。并且PURPOSE: To draw out the binary coded video output faithful to the picture of the original without being affected by the temperature change by eliminating the effect of the dark output of the self-scan type photo detector array.
CONSTITUTION: After transmission of the picture element signal output equivalent to one line from the self-scan type photo detector array, maximum value d
3 is kept 3 via analog gate 1 only for output signal d
1 of the idle transmission time delivered from the shift register and via the shift clock applied extra. Signal d
1 is then supplied to analog gate 5. Gate 5 delivers peak value signal d
5 according to gate signal P
5 synchronized with the output signal of the shift register. In the same way, analog gate 6 delivers peak signal d
6 according to gate signal P
6 synchronized with the output signal of another shift register. The both signals are added 7 together to obtain signal d
7 in which signal d
5 and d
6 synchronized with output signal d
0 of the element array are arranged alternately. Then picture element signal d
8 obtained through operation 7 of signal d
0 -d
7 is delivered to the binary coding circuit. In this way, the dark output signal fluctuating by the temperature is eliminated with the threshold level stabilized, thus obtaining the binary coded video output faithful to the original picture image.
COPYRIGHT: (C)1980,JPO&Japio,下面是Picture information reading system专利的具体信息内容。

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