Mirror driver notification of device independent bitmap drawing calls
US7567253B2 · kind B2 · utility
2Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2006 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | Jun 20, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/451
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described is a technology including a mechanism that when activated, detects a call to a device independent bitmap. An appropriate mirror driver, such as one or more registered as an accessibility driver, may then be notified of the call. The mechanism may be activated upon creation or selection of the device independent bitmap, and may comprise a wrapper/driver that, from the perspective of the mirror driver, simulates a call to a device dependent bitmap. The notification may be performed by having the driver communicate a function call that emulates a drawing primitive to the mirror driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.