MTF COMPENSATING SYSTEM OF PICTURE INFORMATION READER

摘要: PURPOSE:To reduce the deterioration of picture quality in areas high spatial frequency, by detecting level difference between one-element preceding and succeeding elements a corresponding element at every signals read operating compensating values. CONSTITUTION:An analog signal VIN obtained through an image sensor is converted into digital (a) AD converter 1 latched for latch circuit 2. Moreover, each another 3. The output 2 transferred to up-down counter 4, 4 executes up-counting or down-counting so as equalize In this way, differences two adjacent are from 6 values they 7. When outputs 7 inputted ROM 8, correction stored 8 out compensated adder 9.