Multiuser/multi pointing device graphical user interface system
US5694150A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1995 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Sep 21, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/0382
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A graphical user interface system is provided having an event-driven control program with a unified user input pointing event stream without distinction of source and a graphical user interface having a virtual display space containing objects. The control program processing events related to a plurality of user inputs representing different locations within the virtual display space, and operates optionally in two modes. A first mode permits the plurality of user inputs to interact, allowing an object in the virtual display space at a first location specified by an initial user input to be associated with a second location specified by a concurrent and subsequently terminating user input. In this case, the control program has a counter which increments on activity of any user input and decrements on cessation of activity of any user input, for determining an initial user input condition, temporal concurrence of a plurality of user inputs, and a terminal user input condition. A second mode processes a series of events related to a first user input without apparent functional interference with a concurrent series of events related to a second user input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.