Identification and input device for hand-written signature based on ultrasonic and infrared

Abstract

The invention relates to the hand-written signature identification input equipment based on the ultrasound and the infrared waves. It is composed of the signal transmitting pencil 2, the writing plate 1 and the signal receiving processor 3. The signal transmitting pencil is composed of the force sensor connected to the circuit board and the thin-film switch connected to the sensor. The slope angle sensor is included in the circuit. And the signal receiving processor 3 is composed of the left signal receiving amplifier, the right signal-receiving amplifier and the signal processor. The force sensor and the slope angel sensor are added to the transmitting apparatus of the ultrasound infrared location system as the input equipment, which may reflect the writing trace and the writing habit accurately. Moreover, it can compensate the system error generated by pencil tilting while writing to improve the identification accurateness of the system.

Description

technical field [0001] The invention relates to a handwritten signature and identification input device. Background technique [0002] Handwritten signature and recognition systems are a type of biometric authentication. It is widely used in the identity authentication of users accessing networks, personal computers and other occasions. The handwritten signature and recognition system has made a very important contribution to the security of the computer. Compared with the security mechanism of the user password or mechanical key, it has the characteristics that it cannot be leaked or stolen. The handwritten signature and recognition system extracts the physiological behavior of the individual, which provides a reliable basis for the identification of the user's true identity. [0003] Today, despite the availability of computerized documents, paper documents are still relied upon where there is a legal requirement for documents because the law requires the original handwr...

AI Technical Summary

Problems solved by technology

[0009] To sum up, most of the signature input devices of the existing signature recognition systems use handwriting tablets or similar devices. The main disadvantage of the signature input equipment using the above technology is: the extraction accuracy of the handwriting board to the signature is low, which cannot be well reflected. Authentic signatures, especially in the case of small signatures, have few sampling points, making identification difficult

Nor does it provide information on stress during writing

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