System for real time finger surface pattern measurement

(57) Are a system to provide many sensor electrodes 5 and 20 in which the summary electrical insulation material was prepared, and at least one stimulus electrode 3, and the above-mentioned sensor electrode, Essentially constitute an alignment array and the above-mentioned stimulus electrode, Dissociate from the array of a sensor electrode, and it is arranged and the above-mentioned system, Provide the generation machine 7 connected with the stimulus electrode for impressing current or voltage equipped with the amplitude or the phase to change to the above-mentioned surface, and the above-mentioned system, Provide the measuring devices 8, 9, 10, 11, and 12 connected with the stimulus electrode, and this measuring device, That the display of the pattern of the above-mentioned surface should be generated during impression of current or voltage, It is characterized by being for combining the value which measured the impedance in a sensor electrode to time order, and calculated the value of the predetermined feature of the above-mentioned surface, and was calculated about this sensor electrode over time order.