One major feature that the PS5 needs to have is backwards compatibility. With Microsoft’s stance on backwards compatibility on the Xbox One, Sony will have to make sure their next-gen console is up to modern standards or else it may have some serious consequences.
It seems that Sony may be aware of this and they could be working on backwards compatibility support with a new feature called “Remastering by Emulation”. According to a patent spotted by AlphaFoxWarfare, this Remastering by Emulation feature will be similar to what Microsoft did for the Xbox One X by enhancing games with 4k resolution, HDR, better textures and higher frame rate. The best of all is that this remaster technique does not touch the game code rather, the game is emulated and processed as you play it.
Each asset such as a texture called for by legacy software such as a legacy computer game software has a unique identifier associated with it. The unique identifier can be rendered by imposing a hash on the asset, and then the asset stored with its identifier in a data structure. An artist remasters the textures for presentation on a higher resolution display than envisioned in the original software, and stores them back in the data structure with their identifiers. The original software is then played on the higher resolution display, with asset (such as texture) calls being intercepted, identified, and the data structure entered to retrieve the remastered asset having a matching identifier. The remastered asset is then inserted on the fly into the game presentation.
Sony filed the patent over at the United States Patent Office which could have let the cat out of the bag for any possible backwards compatible features we may see on the PS5. Then again, this patent could just be something Sony is working on for some other plan. We won’t know until the PS5 is fully revealed sometime in the future.