 At the Consumer Electronics Show, on 4 January 2007, Warner Bros. introduced a hybrid technology, Total HD, which would reportedly support both formats on a single disc.The new discs were to overlay the Blu-ray and HD DVD layers, placing them respectively and beneath the surface.The Blu-ray top layer would act as a two-way mirror, reflecting just enough light for a Blu-ray reader to read and an HD DVD player to ignore.