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Implementing analogue video interfaces (Part 2)

Posted: 06 Jul 2010     Print Version  Bookmark and Share

Keywords:analogue video interface  interface IP SoC  video analogue front end 

The first part of this article discussed the general aspects governing the need and the selection of solutions for analogue video interfaces and detailed the most relevant technical aspects of the transmit side of such interfaces—the video DAC (VDAC). In this second part, we focus on the receiver side of the interface—the video analogue front end (video AFE or V-AFE).

Video AFE circuits (also known as video ADCs or video decoders) are essential components of digital home and personal entertainment systems. Despite growing use of emerging digital interfaces, analogue video interfaces still play a prominent role in multimedia applications. Due to their high image quality and especially low power consumption compared with some popular digital video interfaces, there is a thriving market for consumer devices that use analogue video as their primary connection.

Additionally, computer displays and home entertainment equipment will continue to support the large installed base of STBs, VCRs, DVD players, digital cameras and other equipment that only provide video in an analogue format. To meet this requirement, SoC designers must incorporate high-performance video AFEs that can capture and digitise video from both xVGA computer video sources and a wide range of analogue display formats, including the increasingly popular 1,080p high-definition TV (HDTV or simply HD) format.

View the PDF document for more information.

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