In response to the semantic understanding obstacles and the superficial experience in the digital display of traditional residential couplets and plaques, this study explores the deep driving mechanism of the transformation from cultural perception to communication behaviors, and proposes a digital service prototype concept based on data inference. With the Tang Family Courtyard in Guanzhong as a case, the cognitive schema theory is applied to analyze the psychological cognition of tourists, and construct a cultural perception evaluation model including five dimensions of text content, calligraphy art, family precepts ideology, historical value and decorative aesthetics. The stratified quota sampling method is used for questionnaire surveys, and the structural equation model (SEM) is utilized for path analysis. The research verifies the data-driven logic of "perception - immersive experience - communication", and finds that "family precepts ideology" and "decorative aesthetics" are the core driving forces for triggering immersive experience. In conclusion, starting from the user experience design methodology, this study deduces the prototype concept of the Tang Family Courtyard digital display APP service system, reconstructs the digital narrative logic centered on "family precepts ideology", and provides theoretical derivation and strategic reference for the digital protection and interactive system design of cultural heritage.