Payment System DOI Extraction via Intermediary Server

The patent introduces a server as an intermediary between the user's client device and foreign third-party payment institutes. This server acts as a mediator that receives payment requests from the client, extracts DOI information, and communicates with foreign payment systems on behalf of the user. This intermediary approach enables compatibility with foreign payment systems without requiring direct integration between the client device and multiple foreign payment institutes, thus maintaining simplicity while achieving versatility.

The patent employs a copying strategy where the server replicates the DOI extraction and payment processing functionality that exists in local payment systems. Instead of requiring foreign payment institutes to natively extract DOI contents, the server creates a copy of the extraction logic and performs it on behalf of the payment institute. This allows payment functionality to be restored in foreign regions while maintaining protocol compliance, as the server acts as a compliant intermediary that handles the non-compliant extraction task.

The patent segments the payment system into distinct functional components: the client device that generates DOIs, the server that handles DOI extraction and payment processing, and the third-party payment institutes that execute payments. By separating the DOI extraction functionality into a dedicated server component rather than integrating it into the payment institute's core infrastructure, the system achieves adaptability to DOI-based payments while preserving the stability and security of existing payment institute systems. Each segment maintains its原有的 stability while the server provides the necessary adaptability.