Information display apparatus having multiwindow system
US5386504A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 1993 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | May 28, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An information display apparatus having a multiwindow system designed to achieve high speed image drawing without impairing the operability of the multiwindows. In this apparatus, a communication controller sets an exclusive mode discrimination flag when a request to do so is generated by an application program. The displaying capability for all other application programs is then suspended. If another application program then generates a request with respect to window management, the communication controller checks an application program management table. When the result of the check indicates that the request is generated by a suspended application program, the request is stored in a communication buffer and processing of the request is suspended unless the suspension of the processing is cancelled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.