An apparatus and method for detecting vertical blanking intervals (VBI) is disclosed. The apparatus can identify and filter non-VBI signals, and calculate a level value for digitization corresponding to the type of television signals. The apparatus includes a detecting unit and a coupled computing unit....http://www.google.de/patents/US7986370?utm_source=gb-gplus-sharePatent US7986370 - Apparatus and method for detecting vertical blanking interval
