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2 243 600

(13)

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IPC

(21) (22)

Application

2000104481/28, 2000-02-21

(24)

Start date

2000-02-21

(22)

Actual filing date

2000-02-21

(45)

Published

2004-12-27

(72)

Inventor

Kokhasi TakasiOgino AkiraKimura KhirojukiEsiura KhirosiMorijama EsiakiSugaja Katsumi

(73)

Holder

Soni KorporejshnPajehnier KorporejshnKhitachi Limited

METHOD FOR INSERTING ADDITIONAL INFORMATION, METHOD FOR DETECTING ADDITIONAL INFORMATION, DEVICE FOR INSERTING ADDITIONAL INFORMATION AND DEVICE FOR DETECTING ADDITIONAL INFORMATION Russian patent published in 2004 - IPC

Abstract RU 2243600 C2

FIELD: water mark technologies.

SUBSTANCE: method includes generation of plural portions of additional information. Said plurality is converted to information of electronic water mark. Dimensions of insertion areas are set dependent on value of information. Information is inserted on basis of respective control signal.

EFFECT: higher efficiency.

5 cl, 35 dwg

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RU 2 243 600 C2

Authors

Kokhasi Takasi

Ogino Akira

Kimura Khirojuki

Esiura Khirosi

Morijama Esiaki

Sugaja Katsumi

Dates

2004-12-27—Published

2000-02-21—Filed