Multiple transform utilization and application for secure digital watermarking
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
N/A
app pub date -
Apr 22, 2014
filing date -
Apr 2, 1998
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Multiple transform utilization and applications for secure digital watermarking. In one embodiment of the present invention, digital blocks in digital information to be protected are transformed into the frequency domain using a fast Fourier transform. A plurality of frequencies and associated amplitudes are identified for each of the transformed digital blocks and a subset of the identified amplitudes is selected for each of the digital blocks using a primary mask from a key. Message information is selected from a message using a transformation table generated with a convolution mask. The chosen message information is encoded into each of the transformed digital blocks by altering the selected amplitudes based on the selected message information.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
WISTARIA TRADING LTD | CLARENDON HOUSE 2 CHURCH STREET HAMILTON HM 11 |
International Classification(s)

- 2014 Application Filing Year
- H04L Class
- 29135 Applications Filed
- 23333 Patents Issued To-Date
- 80.09 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Moskowitz, Mr Scott A | US | 1 | 6 |
# of filed Patents : 1 Total Citations : 6 | |||
Moskowitz, Scott A | Ft. Lauderdale, US | 110 | 12406 |
# of filed Patents : 110 Total Citations : 12406 |
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Patent Citation Ranking
- 6 Citation Count
- H04L Class
- 4.50 % this patent is cited more than
- 11 Age
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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 21, 2026 |
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