Image processing apparatus, method, and system, and computer-readable storage medium having program stored therein
US6473859B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1999 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Apr 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/132
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image data distribution system includes a server, side and a client side. The server side codes original image data into hierarchical coded data formed of a plurality of hierarchies, and encrypts at least one of the hierarchies. The server side further adds a predetermined code (code for causing a part of a decoding process to be skipped) to coded data of the encrypted hierarchy. When the hierarchical coded data is to be decoded, the client side does not perform a decoding process on the hierarchy to which the predetermined code is added and performs a decoding process on the coded data of the hierarchy when predetermined conditions are satisfied. This makes it possible to easily and reliably manage image data used for a plurality of types of purposes and to reliably protect the copyright of the image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.