Issued Patents All Time
Showing 76–100 of 100 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8090142 | Embedding data in and detecting embedded data from video objects | Ahmed Tewfik, Mitch Swanson | 2012-01-03 |
| 8081755 | JPEG2000 syntax-compliant encryption with full scalability | Shipeng Li, Yang Yang | 2011-12-20 |
| 7987368 | Peer-to-peer networks with protections | Xiaoming Wang, Shipeng Li | 2011-07-26 |
| 7978848 | Content encryption schema for integrating digital rights management with encrypted multicast | Min Feng | 2011-07-12 |
| 7953224 | MPEG-4 encryption enabling transcoding without decryption | Chang-Wen Chen, Shipeng Li, Yang Yang | 2011-05-31 |
| 7769168 | Locally interative encryption generating compliant ciphertext for general syntax specifications | Yang Yang, Shipeng Li | 2010-08-03 |
| 7756271 | Scalable layered access control for multimedia | Min Feng, Shipeng Li | 2010-07-13 |
| 7690026 | Distributed single sign-on service | Tierui Chen, Shipeng Li | 2010-03-30 |
| 7644445 | Secure key management for scalable codestreams | Min Feng, Shipeng Li | 2010-01-05 |
| 7602907 | Elliptic curve point multiplication | Min Feng, Shipeng Li | 2009-10-13 |
| 7594275 | Digital rights management system | Guofei Gu, Shipeng Li | 2009-09-22 |
| 7454034 | Digital watermarking of tonal and non-tonal components of media signals | Ahmed Tewfik, Mitchell D. Swanson | 2008-11-18 |
| 7454797 | Secure image authentication with discrete level tamper localization | Jinhai Wu, Shipeng Li | 2008-11-18 |
| 7424112 | Ciphertext switching for syntax compliant encryption | Yang Yang, Shipeng Li | 2008-09-09 |
| 7406176 | Fully scalable encryption for scalable multimedia | Shipeng Li, Chun Yuan, Yidong Wang | 2008-07-29 |
| 7313814 | Scalable, error resilient DRM for scalable media | Chun Yuan, Shipeng Li | 2007-12-25 |
| 6991867 | Fuel cell | — | 2006-01-31 |
| 6915481 | Transactional watermarking | Ahmed Tewfik, Mitchell D. Swanson | 2005-07-05 |
| 6751337 | Digital watermark detecting with weighting functions | Ahmed Tewfik, Mitchell D. Swanson | 2004-06-15 |
| 6442283 | Multimedia data embedding | Ahmed Tewfik, Mitchell D. Swanson | 2002-08-27 |
| 6282299 | Method and apparatus for video watermarking using perceptual masks | Ahmed Tewfik, Mitchell D. Swanson | 2001-08-28 |
| 6272634 | Digital watermarking to resolve multiple claims of ownership | Ahmed Tewfik, Mitchell D. Swanson | 2001-08-07 |
| 6226387 | Method and apparatus for scene-based video watermarking | Ahmed Tewfik, Mitchell D. Swanson | 2001-05-01 |
| 6061793 | Method and apparatus for embedding data, including watermarks, in human perceptible sounds | Ahmed Tewfik, Mitchell D. Swanson, Laurence Boney | 2000-05-09 |
| 6031914 | Method and apparatus for embedding data, including watermarks, in human perceptible images | Ahmed Tewfik, Mitchell D. Swanson | 2000-02-29 |