Secure Runtime Environment Display Data Verification

The patent introduces a security element as an intermediary between the normal runtime environment and the display device. This security element verifies display data before it is shown to the user, acting as a mediator that ensures reliability while allowing the normal runtime environment to continue providing ease of operation. The security element checks whether display data originates from trusted sources and has not been manipulated, thus resolving the contradiction between operational convenience and data reliability.

The patent merges the display functionality for both secure and normal runtime environments into a single display device. Instead of providing separate display elements, the invention combines them while using a security element to verify and distinguish display data sources. This merging approach maintains reliability through verification while reducing device complexity by eliminating the need for separate physical display elements.

The patent applies partial verification by having the security element check specific security-relevant aspects of display data rather than performing exhaustive analysis on all display data. The verification focuses on critical security criteria such as source authentication and manipulation detection, while allowing other display operations to proceed efficiently. This partial action approach maintains reliability for security-critical functions while preserving overall productivity by avoiding excessive processing of all display content.