Method and system for capturing and encoding full-screen video graphics
US6421738B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1997 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Jul 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/54
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for encoding video graphics of displayed on a monitor of a computer system. Graphical API function calls are hooked so that when a graphical API routine is called the graphical API function call that called the graphical API routine will be diverted to an encoding subroutine in a screen capture program module. Under the control of the encoding subroutine, the graphical API call is unhooked. A determination is made whether any initial state parameters of the screen need to be stored and, if so, then the initial state parameters are stored in records. The graphical API function call is then called. If the graphical API function call was successfully executed and directed to the screen, then a determination is made whether any dependent objects of the graphical API function call need to be stored. If so, then these dependent objects are stored in records. The graphical API function call is then stored in a record.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.