Sony has a patent for something like this. Look at page 10: https://patentimages.storage.googleapis.com/b6/5d/66/df0f98c0095ffe/US8246454.pdf https://patentim

Sony has a patent for something like this. Look at page 10: https://patentimages.storage.googleapis.com/b6/5d/66/df0f98c0095ffe/US8246454.pdf https://patentimages.storage.googleapis.com/b6/5d/66/df0f98c...