Electronic book with restricted access features
US8095949B1 · kind B1 · utility
35Cited by
601References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1999 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Jun 25, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S345/901
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A viewer for displaying electronic books and having various features for restricting access to their content. A user may assign ratings to stored electronic books, or use standard ratings, and assign access levels to potential users. The ratings and access levels determine which electronic books, or portions of the electronic books, a particular user may access on the viewer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.