Fully scalable encryption for scalable multimedia
US7406176B2 · kind B2 · utility
61Cited by
7References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2003 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Sep 6, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/2662
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Subject matter includes exemplary systems and related methods for fully scalable encryption of scalable multimedia. A scalable bitstream encrypted using the subject matter maintains full functionality of scalable features in the encrypted form. The exemplary scalable encryption allows transcoding, rate shaping, and other operations directly on the ciphertext without degradation of scalable compression efficiency and error resiliency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.