Method and system for copy protection of displayed data content
US6993662B2 · kind B2 · utility
22Cited by
53References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2001 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Jan 4, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99945
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for altering text displayed in a formatted page, including locating a buffer of memory locations containing contents of a formatted page, locating a first text string between two markers within the buffer, the first string being an encrypted text string including N characters, replacing the first text string with a second text string, the second string being a decrypted text string including M characters, where M is less than N, and inserting N−M special fill characters in the N−M unfilled memory locations between the markers, so as to avoid the need to move the markers closer together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.