US6389152B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for superposing a digital watermark and method and apparatus for detecting a digital watermark
Assignee: Pioneer Corp
•
Filing: 2001-04-09
•
Granted: 2002-05-14
•
Expires: 2021-04-09
Abstract
Abstract An apparatus for superposing a digital watermark for superposing digital watermark information on an information data signal bearing original information superposes digital watermark information on an information data signal bearing original information, for each unit block consisting of a group of pieces of information data. This apparatus is provided with an auxiliary embedding circuit 10 of or embedding second digital watermark information in the information data; a blocking circuit 12 for dividing into the unit blocks the changed information data signal obtained by the auxiliary embedding circuit; and a main embedding circuit 20 for embedding first digital watermark information in the changed information data signal for each of the divided blocks. The second digital watermark information bears information for identifying the position of the divided unit block in a predetermined section of the information data signal. On the basis of the second watermark information, a detecting apparatus effects proper blocking with respect to the information data signal with the watermark embedded therein, so as to detect the first watermark information.
Inventors
- 👤 Takeshi Nakamura
- 👤 Kazumi Sugaya
- 👤 Yoshiaki Moriyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:55
CPC Classifications
H; H04; H04N; H04N19/00; H04N19/46; H04N19/467; G; G06; G06T; G06T1/00; G06T1/0021; G06T1/005; G06T1/0064; G06T1/0071; H04N1/00; H04N1/32; H04N1/32101; H04N1/32144; H04N1/32149; H04N1/32154; H04N1/32165; H04N1/32203; H04N1/32208; H04N1/32352; H04N19/60; H04N21/00; H04N21/20; H04N21/23; H04N21/238; H04N21/2389; H04N21/23892; H04N21/80; H04N21/83; H04N21/835; H04N21/8358; G06T2201/00; G06T2201/005; G06T2201/0052; G06T2201/0061; G06T2201/0065; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3225; H04N2201/3233; H04N2201/3269; H04N2201/327
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
65 words
A method for superposing a digital watermark for superposing digital watermark information on an information data signal bearing original information, the method comprising: embedding position information in the information data signal to produce a changed information data signal; and embedding the digital watermark information in the changed information data signal, wherein the position information bears information for recognizing a position of the digital watermark information.
Claim 2
Independent Claim
65 words
A method for superposing a digital watermark for superposing digital watermark information on an information data signal bearing original information, the method comprising: embedding position information in the information data signal to produce a changed information data signal; and embedding the digital watermark information in the changed information data signal, wherein the position information bears information for recognizing a position of the digital watermark information.
Claim 3
Dependent Claim
21 words
The method for superposing a digital watermark according to claim 1 , wherein the information data signal is a video signal.
Claim 4
Dependent Claim
22 words
The method for superposing a digital watermark according to claim 2 , wherein the position information is information of a random pattern.
Claim 5
Dependent Claim
22 words
The method for superposing a digital watermark according to claim 1 , wherein the position information is information of a random pattern.
Claim 6
Independent Claim
75 words
An apparatus for superposing a digital watermark for superposing digital watermark information on an information data signal bearing original information, the apparatus comprising: an auxiliary embedding circuit that embeds position information in the information data signal to produce a changed information data signal; and a main embedding circuit that embeds the digital watermark information in the changed information data signal, wherein the position information bears information for recognizing a position of the digital watermark information.
Claim 7
Independent Claim
75 words
An apparatus for superposing a digital watermark for superposing digital watermark information on an information data signal bearing original information, the apparatus comprising: an auxiliary embedding circuit that embeds position information in the information data signal to produce a changed information data signal; and a main embedding circuit that embeds the digital watermark information in the changed information data signal, wherein the position information bears information for recognizing a position of the digital watermark information.
Claim 8
Dependent Claim
21 words
The apparatus for superposing a digital watermark according to claim 5 , wherein the information data signal is a video signal.
Claim 9
Dependent Claim
22 words
The apparatus for superposing a digital watermark according to claim 6 , wherein the position information is information of a random pattern.
Claim 10
Dependent Claim
22 words
The apparatus for superposing a digital watermark according to claim 5 , wherein the position information is information of a random pattern.
Claim 11
Independent Claim
60 words
A method for detecting a digital watermark for detecting digital watermark information from a changed information data signal generated by superposing the digital watermark information on an information data signal, the method comprising: detecting position information from the changed information data signal; and detecting the digital watermark information from the changed information data signal based on the detected position information.
Claim 12
Independent Claim
60 words
A method for detecting a digital watermark for detecting digital watermark information from a changed information data signal generated by superposing the digital watermark information on an information data signal, the method comprising: detecting position information from the changed information data signal; and detecting the digital watermark information from the changed information data signal based on the detected position information.
Claim 13
Dependent Claim
21 words
The method for detecting a digital watermark according to claim 9 , wherein the information data signal is a video signal.
Claim 14
Dependent Claim
22 words
The method for detecting a digital watermark according to claim 10 , wherein the position information is information of a random pattern.
Claim 15
Dependent Claim
22 words
The method for detecting a digital watermark according to claim 9 , wherein the position information is information of a random pattern.
Claim 16
Independent Claim
71 words
An apparatus for detecting a digital watermark for detecting digital watermark information from a changed information data signal generated by superposing the digital water mark information on an information data signal, the apparatus comprising: a position information detector that detects position information from the changed information data signal; and a watermark information detector that detects the digital watermark information from the changed information data signal based on the detected position information.
Claim 17
Independent Claim
71 words
An apparatus for detecting a digital watermark for detecting digital watermark information from a changed information data signal generated by superposing the digital water mark information on an information data signal, the apparatus comprising: a position information detector that detects position information from the changed information data signal; and a watermark information detector that detects the digital watermark information from the changed information data signal based on the detected position information.
Claim 18
Dependent Claim
21 words
The apparatus for detecting a digital watermark according to claim 13 , wherein the information data signal is a video signal.
Claim 19
Dependent Claim
22 words
The apparatus for detecting a digital watermark according to claim 14 , wherein the position information is information of a random pattern.
Claim 20
Dependent Claim
22 words
The apparatus for detecting a digital watermark according to claim 13 , wherein the position information is information of a random pattern.
Claim 21
Independent Claim
73 words
A method comprising: embedding position information in an information data signal to produce a changed information data signal; embedding a digital watermark information in the changed information data signal; detecting the position information from the changed information data signal; and detecting the digital watermark information from the changed information data digital based on the detected position information, wherein the position information bears information for recognizing a position of the digital watermark information embedded.
Claim 22
Independent Claim
73 words
A method comprising: embedding position information in an information data signal to produce a changed information data signal; embedding a digital watermark information in the changed information data signal; detecting the position information from the changed information data signal; and detecting the digital watermark information from the changed information data digital based on the detected position information, wherein the position information bears information for recognizing a position of the digital watermark information embedded.
Claim 23
Dependent Claim
16 words
The method according to claim 17 , wherein the information data signal is a video signal.
Claim 24
Dependent Claim
17 words
The method according to claim 18 , wherein the position information is information of a random pattern.
Claim 25
Dependent Claim
17 words
The method according to claim 17 , wherein the position information is information of a random pattern.
Claim 26
Independent Claim
92 words
A system comprising: an auxiliary embedding circuit that embeds position information in an information data signal to produce a changed information data signal; a main embedding circuit that embeds a digital watermark information in the changed information data signal; a position information detector that detects the position information from the changed information data signal; and a watermark information detector that detects the digital watermark information from the changed information data signal based on the detected position information, wherein the position information bears information for recognizing a position of the digital watermark information.
Claim 27
Independent Claim
92 words
A system comprising: an auxiliary embedding circuit that embeds position information in an information data signal to produce a changed information data signal; a main embedding circuit that embeds a digital watermark information in the changed information data signal; a position information detector that detects the position information from the changed information data signal; and a watermark information detector that detects the digital watermark information from the changed information data signal based on the detected position information, wherein the position information bears information for recognizing a position of the digital watermark information.
Claim 28
Dependent Claim
16 words
The system according to claim 21 , wherein the information data signal is a video signal.
Claim 29
Dependent Claim
17 words
The system according to claim 22 , wherein the position information is information of a random pattern.
Claim 30
Dependent Claim
17 words
The system according to claim 21 , wherein the position information is information of a random pattern.
References Cited (Backward Citations)
US5497241A
Cited
US5530759A
Cited
US5949885A
Cited
US6031914A
Cited
US6061793A
Cited
US6272634B1
Cited
EP0891071A2
Cited
EP0901282A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-05-13 | 2005-11-12 | 2006-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-05-13 | 2009-11-12 | 2010-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-05-13 | 2013-11-12 | 2014-05-14 | $7700.00 | Window Closed / Lapsed |