planes. what happened to all those patents? cnn's zain asher joins us with a look at some of these technology. >> reporter: since air france 447 crashed you're seeing hundreds of engineers coming from massive corporations like l3 and honey well, others quote unquote mom and pop inventors trying to create a way for black boxes to be retrieved faster. honey well has created a way of capturings the audio in the cockpit and converting it intex and if there was an merge or warning it would send the last let's say 15 or 20 minutes of transcript to computers on the ground. even though the cockpit voice recorder would take months or years to retrieve investigators would have something to work with in the meantime. given that air france 447 crashed partly because of pilot error, one inventor was actually motivated to create an app that