Data process apparatus and method therefor
US7463736B2 · kind B2 · utility
4Cited by
11References
10Claims
0Family size
Assignee
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Key dates
| Filing date | May 9, 2003 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Dec 4, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/26613
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an image process apparatus, a key different for each level of hierarchy is generated on the basis of a specific key with respect to image data having a hierarchical structure, the image data in each level of the hierarchy is encrypted using the generated key for each level, and the specific key is managed, so that key management can be easily performed while the image data having a hierarchical structure is enciphered using different keys for each level of the hierarchy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.