Disclosed are an analog-to-digital converting apparatus, an analog-to-digital converting method and a touch control apparatus adapted to convert a divided voltage generated according to a power voltage and a ground voltage. The analog-to-digital converting apparatus includes a first sample-and-hold circuit...http://www.google.de/patents/US7541954?utm_source=gb-gplus-sharePatent US7541954 - Touch control apparatus and analog-to-digital converting apparatus and method thereof
