Display Protocol Version Synchronization Chain

The patent applies preliminary action by having display devices exchange and identify their protocol versions during the initial connection phase, before actual display operations begin. The first display device requests model information and supported protocol versions from the second display device, and determines the lowest supported protocol version in advance. This preliminary protocol identification ensures that all subsequent communications and preference synchronizations can proceed using a mutually compatible protocol version, avoiding complexity during normal operation.

The patent applies segmentation by dividing the display chain into hierarchical segments with the first display device as the primary controller and subsequent devices as secondary. When display preferences need to be synchronized, the first display device generates preference data and transmits it to the second display device, which then propagates it to the third display device, and so on. This segmented approach allows parallel propagation to multiple devices rather than sequential updates, reducing overall propagation time while maintaining consistency across all displays.