Matrox CronosPlus Installation And Hardware Reference page 32

32 Appendix A: Glossary
• PLC
Programmable Logic Controller. A device used to automate monitoring and control
of industrial plants. It can be used as a stand-alone device or in conjunction with
data acquisition.
• Progressive scanning
Describes a transfer of data in which the lines of the source input device are written
sequentially into the destination buffer.
Also known as non-interlaced. See also interlaced scanning.
• Real-time processing
The processing of an image as quickly as the next image is grabbed.
Also known as live processing.
• 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.
• Vpp
Voltage peak to peak. The signal amplitude measured between the maximum
positive and negative voltage peak excursions of a signal.