Inside this journal we can get things regarding sensing circuit, schmitt trigger, sensing circuit scheme, contrast adjustment, sensors, output signal, architecture, and sensor cell. Many information such as characteristics, circuit, sensing circuits, sensor, fingerprint sensor identifier, fingerprint sensor, cell, and circuit scheme are described inside the journal.
The journal presents explanation like sensor cell architecture, sensing, cell architecture, input signal, signal, the sensing circuit, contrast enhancement, and capacitive fingerprint. Below are grabbed from this journal:
Novel capacitive fingerprint sensor techniques are described. We propose a novel sensor cell architecture to obtain high sensitivity, wide output dynamic range, and contrast adjustment. For the architecture, three circuit techniques were developed. A sensing circuit with a differential charge-transfer amplifier enhances sensitivity while it suppresses the influence of the parasitic capacitance of the sensor plate. A wide output dynamic range, which is needed for high-resolution analog-to-digital (A/D) conversion, is achieved by transforming the sensed voltage to a time-variant signal. Finally, the sensing circuit includes an automatic contrast enhancement scheme that uses a variable-threshold Schmitt trigger circuit to distinguish the ridges and valleys of a fingerprint well.
Also, the journal gives us discussion about fingerprint image, sensitivity, novel sensor, amplifier, fingerprint, automatic contrast enhancement, capacitive fingerprint sensor, and fingerprint sensors.