ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHU..SK................JDIM350 (Ver 2.1 Jan 2001) 1620000/01333424EUROPEAN PATENT APPLICATIONA320050713EP03250682.620030203EnEnEn200202695820020204JP200301553820030124JP20050713200528200308062003327 7G 10L 19/00 A 7H 04Q 7/22 B 7H 04M 3/50 BdeVerfahren, Vorrichtung und Einrichtung zur Einbettung von Daten in kodierte Sprache und Extrahierung von Daten aus kodierter SpracheenMethod, apparatus and system for embedding data in and extracting data from encoded voice codefrMéthode, dispositif et système d'intégration et d'extraction de données d'un codeur de la parole1FUJITSU LIMITED00211463HL84450/MIW1-1, Kamikodanaka 4-chome, Nakahara-kuKawasaki-shi, Kanagawa 211-8588JPOta, Yasuji, c/o Fujitsu Limited1-1, Kamikodanaka 4-chome, Nakahara-kuKawasaki-shi, Kanagawa 211-8588JPSuzuki, Masanao, c/o Fujitsu Limited1-1, Kamikodanaka 4-chome, Nakahara-kuKawasaki-shi, Kanagawa 211-8588JPTsuchinaga, Y., Fujitsu Kyushu Digital Tech. Ltd.22-8, Hakataekimae 3-chome, Hakata-kuFukuoka-shi, Fukuoka 812-0011JPTanaka, Masakiyo, c/o Fujitsu Limited1-1, Kamikodanaka 4-chome, Nakahara-kuKawasaki-shi, Kanagawa 211-8588JPSasaki, Shigeru, c/o Fujitsu Limited1-1, Kamikodanaka 4-chome, Nakahara-kuKawasaki-shi, Kanagawa 211-8588JPWilliams, Michael Ianet al00092851Haseltine Lake Imperial House 15-19 KingswayLondon WC2B 6UDGBATBEBGCHCYCZDEDKEEESFIFRGBGRHUIEITLILUMCNLPTSESISKTRALLTLVMKRO20050713200528

When a voice encoding apparatus embeds any data in encoded voice code, the apparatus determines whether data embedding condition is satisfied using a first element code from among element codes constituting the encoded voice code, and a threshold value. If the data embedding condition is satisfied, the apparatus embeds optional data in the encoded voice code by replacing a second element code with the optional data. When a voice decoding apparatus extracts data that has been embedded in encoded voice code, the apparatus determines whether data embedding condition is satisfied using a first element code from among element codes constituting the encoded voice code, and a threshold value. If the data embedding condition is satisfied, the apparatus determines that optional data has been embedded in the second element code portion of the encoded voice code and extracts this embedded data.