62Appendix C: Glossary
•RGB
A color space that represents color using the primary colors (red, green and blue) as components.
•Synchronous function
A function that does not return control to the caller until it has finished executing. See also asynchronous function.
•Vertical sync
The part of a video signal that indicates the end of a frame and the start of a new one.
See also horizontal sync.
•VIA
Video Interface ASIC. A custom ASIC that connects all the data buses on the board (the grab, VMChannel, and PCI bus) to one another, and directs and monitors data flow "traffic". It is a video interface that provides various ways of inputting and outputting data.
•VMChannel
Vesa Media Channel. An industry standard