Definitions for "VLB"
Verzeichnis Lieferbarer Bucher (German books-in-print)
Video Loopback. A feature in some switchers that allows a video signal to exit to another device, such as a decoder or scaler, and the output of that device is then used as another input to the same switcher. This allows any switcher input to use the decoder or scaler, saving the cost of buying separate units.
Keywords:  vesa, bus, slots, expansion, local
Video Electronics Standard Association Local Bus. An interface between the computer and the expansion slots.
VESA Local Bus