Apparatus and methods for inserting and detecting electronic watermark
First Claim
1. An electronic watermark inserter for inserting an electronic watermark pattern or patterns for identifying a furnisher of a picture or image, termed “
- picture”
collectively, into data of said picture, said inserter comprising;
an electronic watermark pattern inserter for inserting previously generated key information pattern or patterns into a picture or pictures into which said electronic watermark pattern or patterns have been inserted and for transmitting the resulting picture or pictures.
1 Assignment
0 Petitions
Accused Products
Abstract
A secure electronic inserter. A picture analyzer 3 analyzes an input picture 101, and decides the insertion strength of the electronic water marking to be inserted, from one pixel of the input picture 101 to another, to output the insertion strength information 104 to an electronic watermark pattern inserter 1 and to a shifting information pattern inserter 2. The electronic watermark pattern inserter 1 inserts an electronic watermark pattern 105, stored in an electronic watermark pattern storage unit 4, into the input pattern 101. The key infomation pattern inserter 2 inserts the key information pattern 106, stored in the key information pattern storage unit 5, into a picture to be processed 102, having the inserted electronic watermark pattern, in accordance with the insertion strength information 104, to output the resulting picture.
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Citations
28 Claims
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1. An electronic watermark inserter for inserting an electronic watermark pattern or patterns for identifying a furnisher of a picture or image, termed “
- picture”
collectively, into data of said picture, said inserter comprising;
an electronic watermark pattern inserter for inserting previously generated key information pattern or patterns into a picture or pictures into which said electronic watermark pattern or patterns have been inserted and for transmitting the resulting picture or pictures. - View Dependent Claims (2, 3, 4, 21)
- picture”
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5. An electronic watermark detector for detecting an electronic watermark pattern or patterns for specifying a furnisher for a picture or image, termed “
- picture”
collectively, inserted into data of said picture, comprising;
means for detecting a key information pattern or patterns inserted into said data of the picture along with an electronic watermark pattern or patterns;
means for generating parameters required for detecting the electronic watermark pattern or patterns from the key information as detected; and
means for detecting said electronic watermark pattern or patterns from said picture based on the parameters generated in said parameter generating means. - View Dependent Claims (6, 22)
- picture”
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7. An electronic watermark system comprising;
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an electronic watermark inserter for inserting an electronic watermark pattern or patterns for identifying a furnisher of a picture or image, termed “
picture”
collectively, into data of said picture, said inserter comprising;
an electronic watermark pattern inserter for inserting previously generated key information pattern or patterns into a picture or pictures into which said electronic watermark pattern or patterns have been inserted and for transmitting the resulting picture or pictures, and an electronic watermark detector for detecting an electronic watermark pattern or patterns for specifying a furnisher for a picture or image, termed “
picture”
collectively, inserted into data of said picture, comprising;
means for detecting a key information pattern or patterns inserted into said data of the picture along with an electronic watermark pattern or patterns, said key information pattern or patterns being inserted at random coordinates centered around a preset interval;
means for generating parameters required for detecting the electronic watermark pattern or patterns from the key information as detected; and
means for detecting said electronic watermark pattern or patterns from said picture based on the parameters generated in said parameter generating means. - View Dependent Claims (11)
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8. A method for inserting an electronic watermark pattern or patterns for identifying a furnisher of a picture or image, termed “
- picture”
collectively, into data of said picture, said method comprising the steps of;
(a) providing a key information pattern or patterns, (b) inserting the previously provided key information pattern or patterns into a picture or pictures, into which an electronic watermark pattern or patterns have been inserted, and (c) transmitting the resulting picture or pictures. - View Dependent Claims (9, 10, 23)
- picture”
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12. A method for detecting an electronic watermark pattern for specifying a furnisher for a picture or image, termed “
- picture”
collectively, inserted into data of said picture, comprising the steps of;
(a) detecting key information pattern or patterns inserted into said data of the picture or pictures alone with said electronic watermark pattern or patterns;
(b) generating parameters required for detecting the electronic watermark pattern or patterns from the key information pattern or patterns as detected; and
(c) detecting said electronic watermark pattern or patterns from said picture or pictures based on the parameters generated. - View Dependent Claims (13, 24)
- picture”
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14. An electronic watermark inserter for inserting an electronic watermark pattern or patterns for identifying a furnisher of a picture into data of said picture, said inserter comprising:
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(a) means for inserting previously generated key information pattern into a picture or pictures into which said electronic watermark pattern has been inserted and for transmitting the resulting picture or pictures, said key information pattern or patterns being inserted at random coordinates centered around a preset interval, (b) means for providing said key information pattern in a predetermined specific arrangement of patterns, and (c) means for transmitting the resulting picture or pictures. - View Dependent Claims (15, 26)
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16. An electronic watermark detector for detecting an electronic watermark pattern for specifying a furnisher for a picture inserted into data of said picture, comprising:
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(a) a key information pattern detecting unit detecting a key information pattern inserted into said data of the picture along with an electronic watermark pattern;
(b) a parameter generator generating parameters required for detecting the electronic watermark pattern from the key information as detected;
(c) a watermark pattern detector detecting said electronic watermark pattern from said picture based on the parameters generated in said parameter generator. - View Dependent Claims (17, 25)
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18. A method for inserting an electronic watermark pattern or patterns for identifying a furnisher of a picture or image, termed “
- picture”
collectively, into data of said picture, said method comprising the steps of;
(a) providing a key information pattern or patterns;
(b) inserting the previously provided key information pattern or patterns into a picture or pictures into which an electronic watermark pattern or patterns have been inserted, the key information pattern or patterns arranged at random coordinates centered around a preset interval; and
(c) transmitting the resulting picture or pictures. - View Dependent Claims (19, 27)
- picture”
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20. A method for detecting an electronic watermark pattern for specifying a furnisher for a picture inserted into data of said picture, comprising the steps of:
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(a) detecting key information pattern or patterns inserted into said data of the picture or pictures along with said electronic watermark pattern or patterns;
(b) generating parameters required for detecting the electronic watermark pattern from the key information pattern as detected; and
(c) detecting said electronic watermark pattern from said picture based on the parameters generated, wherein said key information pattern comprises patterns that are arranged at random coordinates centered around a present interval. - View Dependent Claims (28)
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Specification