PRIVATE INFORMATION INPUT SYSTEM FOR PREVENTING LEAKAGE OF INFORMATION FROM PEEPING OPERATION, IN WHICH IMAGE MASKING UNIT IS USED

摘要

PURPOSE: A private information input system for preventing leakage of information from a peeping operation is provided to protect private information by preventing the peeping operation. CONSTITUTION: A private information input system(100) includes a control unit, a key display, a key pad input unit, a shutter opening/closing unit, and a communication unit. The control unit(102) exchanges private images of number keys and character keys and masking images for masking the private images according to an image sequence, displays the private images to the key display(104), and transmits a corresponding shutter opening/closing signal to the shutter opening/closing unit(108). The key display is formed with one of an LCD, a CRT, and EL display. The key pad input unit(106) is installed by covering a transparent key pad over the key display. The shutter opening/closing unit is formed by a mechanical method or a photoelectric method. The communication unit(110) connects the control unit to the shutter opening/closing unit.