A patent from 2017 filed by the father of the PlayStation 4, Mark Cerny, has recently become public and it suggests the PlayStation 5 will be backwards compatible. The patent describes a process whereby the system will decide if the application is for the current CPU or a legacy application, and if it is, run with selected features disabled and with some added latency as the new CPU will be running rather faster than a legacy CPU.
Here’s the diagram filed with the patent.
As the PlayStation 4, and indeed the Xbox One, are really just custom PC’s in a nice box, making games from this generation run on the next really shouldn’t be that difficult, especially if Sony and MS use the same suppliers for CPU and GPU chips.
Last week a patent for a wireless version of the PlayStation VR headset was discovered.