VGA and Component can be used for signals with HD quality just fine, but ICT will not allow the formats to reach its full potential using these signals. Despite that both Blu-ray and HD DVD are capable of resolutions up to 1920x1080px the analog outputs will be constricted to only 960x540px. The signal will be scaled down making the analog signals less attractive to make copies of. A fact that will have terrible effects on many who have invested in an HDTV without protected inputs, since you then will not be able take advantage of HD at full. The only positive thing about this is that ICT is not a technology that the movie studios have to use, but on the other hand the odds are that they will and kill off the HD capabilities for so many. Source: Ars TechnicaHD DVD and Blu-ray both use the system AACS (Advanced Access Content System) to protect the formats from piracy in several ways. Well now AACS hadded another protection to stop people from making illegal copies of HD DVD and Blu-ray discs. The protection is called Image Constraint Token (ICT) and has been developed to stop pirates from taking advantage of the unprotected analog signals used by the media players. They say they are afraid that pirates will use the unprotected analog signals and store movies at full resolution and then distribute the movie over p2p networks. To protect the movie they have chosen to constrain the capacity with all unprotected signals, which include both VGA and Component which many HDTVs rely on.
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