Methods, systems and devices are described for detecting a measurable capacitance using charge transfer techniques. According to various embodiments, a charge transfer process is performed for two or more times. During the charge transfer process, a pre-determined voltage is applied to the measurable...http://www.google.fr/patents/US7750649?utm_source=gb-gplus-shareBrevet US7750649 - Methods and systems for detecting a capacitance using switched charge transfer techniques
Methods and systems for detecting a capacitance using switched charge ...