Patent ID: 7612568

Claim:
A testing method for determining a connection state of an electronic component in an electronic device assembly, the method comprising: obtaining a sensed signal induced by capacitive coupling in response to the output of a testing signal passing through a tested pin of the electronic component; applying a signal processing sequence on the sensed signal, the processing sequence including: filtering and over-sampling the sensed signal to obtain a digital signal; and applying a validation test on the digital signal to determine whether the sensed signal is an acceptable measure, wherein the validation test is applied by computing the digital signal to determine a correspondence with a predetermined capacitive coupling reference; when a result of the validation test finds no correspondence with the predetermined capacitive coupling reference from the digital signal, raising a frequency and/or amplitude of the testing signal; when a correspondence with the predetermined capacitive coupling reference is found, converting the digital signal into frequency-domain spectrum data; and determining the connection state of the tested pin based on the frequency-domain spectrum data.