Patent ID: 8405632
Filing Date: 2013-03-26
Classification: G06F

Abstract:
1. A light sensitive screen comprising: at least one sensing element each being configured to detect a force applied to a position of the light sensitive screen and generate an electrical signal when a force is detected; and a sensor module configured to receive and process the electrical signal from the at least one sensing element, the sensor module comprising: an amplifier configured to amplify the electrical signal from one of the at least one sensing element and generate an amplified signal; a rectifier configured to convert the amplified signal into a direct-current (DC) signal including a first positive half and a second positive half; a peak detector configured to detect a first peak value of the first positive half and a second peak value of the second positive half; and a digitizer configured to generate a digital signal based on the first peak value and the second peak value, the digital signal including information as to whether the position of the light sensitive screen is touched.