625/50The term 625/50 refers to PAL/SECAM, the analog TV system used in Europe and other countries. It's system of 625 scanning lines (presented as 265 scan lines (a field), interlaced, displaying 580 total lines of visible picture (a frame), at 50 hertz. This 50 hertz scanning rate results in a full frame every 1/25 of second. The 45 scanning lines not displayed is known as the VBI (vertical blanking interval), which contains certain signals that control the TV's scanning system and other functions.
See also HDTV.
Also see Webopedia's "Did You Know...All About Digital TV . DTV and HDTV".
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
From cute electronic toys to VR gaming, here are 5 hot gifts to give to your special tech enthusiast this holiday season. Read More »What's Hot in Tech: AI Tops the List
Like everything in technology, AI touches on so many other trends, like self-driving cars and automation, and Big Data and the Internet of Things... Read More »DevOp's Role in Application Security
As organizations rush to release new applications, security appears to be getting short shrift. DevSecOps is a new approach that holds promise. Read More »
Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More »Java Basics, Part 2
This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More »The 7 Layers of the OSI Model
The Open System Interconnection (OSI) model defines a networking framework to implement protocols in seven layers. Use this handy guide to compare... Read More »