Proposal of a Standard for the Complete Romanization of Hangul

International organizations are demanding standards for the Romanization of proper names such as personal names and place names. Korea has adopted a transcription method that does not meet international standards, so it must respond to international demands with an transliteration method. In the transcription method, the pronunciation of the Korean is written in Roman letters, and in the transliteration method, Hangul is converted to Roman letters. In this paper, we propose a standard for a complete Romanization of Hangul as an transliteration method. The 24 Hangul jamos are the minimum number of graphemes that can be used to constitute any Hanguls and are a complete set. In this standard, the 24 Hangul jamos are defined as a set of Hangul graphemes, and 24 Roman graphemes corresponding to each Hangul graphemes are selected to create an transliteration table. A system was built in which Hangul and Roman syllables exchange text information through transliteration and retransliteration according to the transliteration table. The system were implemented using human and computer algorithms, and was achieved 100% reversibility of the transliteration. The consistency of the system and the usability in the government agency were also examined by comparing it with other systems. This system enables reading and writing both Hangul and Roman syllables with the minimum number of graphemes, and accurately conveys the pronunciation and meaning of Hangul in Roman syllables by spelling according to the Hunminjeongeum spelling system. This system uses 24 Hangul jamos common to both South and North Korea, so it can be proposed as a standard for both of them. It is believed that this paper will contribute to the establishment of a international standard for romanization of Hangul.