reply to andyross
Re: [DTA] What DTAs is Comcast acquiring that are brand new The reason why Thomson/Technicolor SD DTAs can tune to and downconvert an HD channel and output it at SD is because they use a Broadcom BCM3545 chipset. In this article on it »www.lightreading.com/document.as···d=161812 it says:
Broadcom's new [BCM3545] DTA chipset is based on the BCM3543 chip that's being used in some terrestrial, over-the-air [DTV] converter boxes.From a product brief I found on the BCM3543 chip, it states:
We took that [BCM3543 chip] at the core and basically cable-ized it...
On-chip support to convert all inputs (480i, 480p, 720p, 1080i) to standard definition analog output 480i format.