A 'bit' is a single piece of digital data. This data is compressed so that you can record more on a single disc. The Variable Bit Rate continuously controls the amount of compression for a more efficient recording.
Vertical Aperture Control
Sense and adjusts brightness in the vertical plane.
Velocity Modulation
Regulates the speed of the electron beam to keep the picture tightly focused at all times.
VFZ
Abbreviation for Vector Format for Zooming. This next-generation digital image format uses lossless compression to save an image at 2/3 its original size. Unlike standard digital compression, which makes it difficult to reuse data, this format allows the easy enlarging and reducing of data, with no loss in quality.
VGA
Abbreviation for Video Graphics Array. A graphics system developed by IBM. Resolution is 640 x 480 pixels and uses 16 colors. Widely used as a standard for PC graphics systems.