A method for correcting an analog signal to target levels is provided. Firstly, the analog signal is periodically sampled to obtain a plurality of sampled points. Then, levels of the sampled points are compared with a threshold value to find a set of sequentially sampled points including a head and a...http://www.google.co.uk/patents/US6737998?utm_source=gb-gplus-sharePatent US6737998 - Method and device for correcting signal
