특허 기반 블록체인 기술 동향 분석: 기술 재정의 프로세스를 바탕으로

[Purpose] Blockchain technology is becoming important in the fourth industrial revolution, but standardization of technologies is not keeping up with the pace. Therefore, this paper focused on defining what blochchain technology is, and analyzed technological trends using redefined concepts. [Methods] This research conducted a technical redefining process for blockchain technology, and suggested three types of blockchain technology: core, extended, and general. We used patent co-classification and network analysis for each technology groups. [Results] Blockchain technology has been evolved from network-based technology to the data privacy and payment-application, recently focusing on data applications. Machine learning technology is actively applied, and many different industries such as healthcare applications also turned out to be increasing with respect to the blockchain technology. [Conclusion] This study provide important clues in defining the blockchain technology, analyzing the technological trend, and identifying possible innovation chances in blockchain technologies.