Matrox Graphics Inc.

Matrox Graphic Inc.

Alexandre Lahaise

Kamran Ahmed

James Anglehart

Lorne Trottier

Yves Tremblay

Gilles Forest

Jean Lapointe

Martin Pilot

Daniel T Wood

A display controller system is controlled to provide a display surface zoom using hardware scaling from user input at the operating system, application program or hardware level. User input defining coordinates of a frame portion within a frame buffer memory is obtained, and a resolution of the zoom display device is determined. An aspect ratio of the zoom portion defined by the user input is adjusted to correspond to the zoom display device resolution. The display controller system is programmed to implement the display surface zoom to provide a full screen view of the zoom portion on the zoom display device. In the display controller system, the zoom portion of the frame buffer memory is scaled, converted into a display signal and output.

User selectable hardware zoom in a video display system

Multiple independent displays from one graphics controller can be driven in a wide variety of modes using multiple display controllers. This invention incorporates a unique combination of enhancement building on a generic single multi-display graphics subsystem. Digital video is gaining vast popularity in the worldwide consumer, professional and commercial market. The applications of this invention cover all these market segments and include (but are not limited to) Digital Content Creation, Digital video playback, digital entertainment, DVD Authoring etc.

Multiple display device display controller with video overlay and full screen video outputs

Growing community of inventors

Pierrefonds, Canada

Alexandre Lahaise