richard hart reports on the drive to discover a machine that will play back anything. >> this is theldest known recording made in france in april of 1860. the voice pattern was squiggled in lint black on paper with no way to play it back. in 2008 a team at lawrence berkeley laboratory turned this wave into a computer file and resurrected the performance. >> it came as a seren di pitous connection. it wasment for energy physics and it could be applied to the other problem. >> since then they have resurrected the recordings around the world. their signature technology is a beam of light that scans the surface 18,000 times per second, translating the reflected hills and the valleys. cornell is behind the software. >> what makes this interesting is at the end of the process you get to listen to some audio. where else would you have something so pleasing and interesting in many cases at the end. >> their latest trials involve a to being -- a talking doll. they brought the lab a miniature version of the cylinders. they put the rings into dolls. the only one known to survive is too damaged

richard hart reports on the drive to discover a fee through video screen. >> reporter: if this videocreen looks a little familiar, it could be because you saw a movie called" minority report." in it tom cruise sees through the images on his monitor. >> in "minority report" people put information on the glass. this tech technology can do it now. >> reporter: he combines an invisible laser beam with a nano technology film. one player turns red in a laser light and one turns green and one turns blue. each layer made of particles so tiny the visible light passes between them. coat your windshield and it will display a see through dashboard and add a gps map. >> this is being drawn by a laser beam. but the colors you are seeing are not the color of the laser beam. the laser light is invisible. the glow you can see is the nano material responding to the laser light. that coating can be put on any clear material, even material not clear. it is completely absorbed by the material so the laser beam doesn't pass through. in fact, it could be built right into an automobile windshield. >> report

with the next step, richard hart "abc 7 news." >> technology developed here in the bay area could soone done at home. health and sciences reporter carolynohnson has a portable monitor that allows scientists to scan brain waves. >> the volunteer wearing this head set is communicating with a brain wave monitor. it appears a 5,. >>> he believes the device could hem people better regulate their sleep. >> having to wake up, but just fine in the morning. >> and the benefits of charting brain waves could stretch beyond sleep. clinical trials are researching from migraines to epilepsy. >> still ahead, doing it the old-fashioned way. one local man super human effort to build a wall by hand. and facing an ob can't see. these sweehoney clustery things have fiber? fiber one. almost tastes like one of jack's cereals. uh forgot jack's cereal. [ jack ] what's for breakfast? uh, try the number one! i've never heard of that. [ wife ] it's great. it's a sweet honey cereal, you'll love it. are you guys alright? yeah. [ male announcer ] half a days worth of fiber. not that anyone has to know. fiber beyo r

richard hart reports. >> if this video screen looks familiar it's because you saw a movie named minority report. tom crews sees the images through his monitor. >> it's like avatar. it's on the glass. this technology comes in. >> sun's invention combines a laser beam with a film. one layer turns red, one turns green and one turns blue. each layer made of particles so tiny visible light passes right between them. coat your windshield it will make a future dashboard. >> this image is being drawn by a laser beam but the colors you are seeing is not the beam, the laser light is invisible. it's the glow responding to the laser light. that coating can be put on any clear material, even material that is not clear. it's completely absorbed by the material so the laser beam doesn't pass through. in fact it could be built right into an automobile windshield. >> general motors is testing it in show cars. disney in its theme parks and another technology is holograph i can material. sun comes up with a new application every day. innovation is appearing on retail displays is such as a shop window in sa

richard hart, "abc 7 news." >> right now we want to tailing to you canada where prince william and katemet some french resistance. they are touching down at prince edwards island after a two day tour of quebec. french speaking separatists have been protesting but they are lovely tour in a carriage. they are visiting, will be doing a demonstration making an emergency landing on the lake. they will compete in a loet boat race. it is a big scene of pageantry. kate and will on a five day canadian tour. on friday they will be coming to los angeles. >>> retailers may be feeling the love for love of country today. >> bloomberg at the new york stock exchange with the expected rise with the purchase of patriotic products. >> good morning. you might be hosting a barbecue or going to someone else's today or doing some shopping. today is the last day for july the 4th bargains for a bunch of retailers. they try to capitalize on american's urge to get their patriotism on. more than 20% have bought a new patriotic merchandise that is up from 16% last year. americans are expected to eat 150 million hot