METHOD AND APPARATUS FOR INSERTING AND EXTRACTING WATERMARK INTO AND FROM CONTENTS INFORMATION
Patent №
US 6,636,617
Granted
2003-10-21
Filed 2000
Owner
VICTOR COMPANY OF JAPAN, LTD.
Lab
—
AI components
1
evo
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
09584081
In a method of inserting watermark information into digital data, a specified data value is determined in response to the watermark information. A data-value occurrence-frequency distribution of a predetermined number of samples of the digital data is changed into a modified occurrence-frequency distribution in which the specified data value occurs at a frequency extremely different from frequencies of occurrence of data values other than the specified data value.
AI classification
Ownership
VICTOR COMPANY OF JAPAN, LTD.
assignment · 108400083
Assignors
SUGAHARA, TAKAYUKI, NAITO, JOJI
On an employer assignment, the assignors are typically the inventors.