In the first section, the origin and formation of Kanji and Kana are explained from the viewpoint of linguistics. In the second section, Kanji and Kana are considered within a framework of information processing. That is, this paper dealt with the interrelation between information extraction of Kanji and the graphemic, phonemic, and semantic aspects of Kanji. These three aspects of Kanji are discussed theoretically and experimentally with the On (Chinese type reading) and Kun (Japanese type reading) readings as the phonetic aspects, and phonetics and radicals as the constructive aspects of Kanji in a two-dimensional arrangement. The findings of this paper support the idea that both phonetic and semantic processing of Kanji are carried out simultaneously since Kanji are arranged two-dimensionally. That is, Kanji information can first be extracted by minimal core encoding, with graphemic, phonetic, and semantic processing following parallely.