H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/16
H04N 1/04 (2006.01) H04N 1/409 (2006.01)
Patent
CA 1216355
ABSTRACT Circuit arrangement for crosstalk compensation in electrooptical scanners The invention concerns a circuit arrangement for compensating for the crosstalk occurring between adjacent cells of a linear photodiode array in a scanner for an illuminated object, characterized in that, using the actual value Ri of the signal derived from the ith cell and the actual values of the signals R(i+1) and R(i-1) derived from the (i+1)st and the (i-1)st cells, the signal portion (a) of the ith cell contributing to the signal of the (i-1)st and the (i+1)st cell and the influence of (a) of the signals R(i+1) and R(i-1) on the actual signal Ri of the ith cell is eliminated in practice by determining the signal according to the formula Image and that the output of the linear photodiode array (7) has connected to it a shift register (11) with at least three outputs (12, 13, 14), to the first and the third output of which one inverter stage (15, 16) and one control element (17, 18) each for (a) linked therewith is connected, and that the output of the first control element (17) and the second output (13) of the shift register (11) are connected to a first adder (19), whose output is connected to one input of a second adder (20) having its second input connected to the output of the second control element (18).
450266
International Business Machines Corporation
Saunders Raymond H.
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