HD-TVI means High Definition Transport Video Interface, It is a DSP-TVI technology developed by Techpoint(2012), and the Chipset was sold to Intersil

TVI can convert the digital signals to analog ones, it extends the transmission distance, reduces the total cost, and takes less storage capacity, HD-TVI is also based on coaxial cable, support HD video signal(1080P/720P), Audio signal, digital signal transmission. 

The feature of HD-TVI:

>1080P/720P( 25/30 fps) video signal

> Long transmission distance at 300-500 m

> No Video loss

>Real-time preview without delay

>Transmit video signal, audio signal and dual-way data communication, 3 signal transmission over one coaxial cable.

>Follow same connection structure with original analogue system without cable (Coax / UTP) changed, which means users can just change their old analog cameras and DVRs to TVI cameras and DVRs to get a brand new1080p surveillance system, don’t need any other special knowledge and extra cost.

HD-TVI vs HD-SDI

So in conclusion, the advantage of HD-TVI compared with HD-SDI is

> Longer transmission distance(without boost) 
>Affordable Price
>Better Anti-interference and Reliability

HD-TVI vs IPC

So compared with IPC, the advantage of HD-TVI is

> No compression, so no video quality loss.
>Real-time video display, without any transmission signal delay.
> Low requirement for network bandwidth.

HD-TVI vs HD-CVI

Why HD-TVI?

TVI comes from a US-based company that does not supply to only one manufacture, the chipset is open, not sealed, you can DIY your HD-TVI system with different brand. while HD-CVI, no matter camera or DVR, should be bought from original company or authorized company.

Customers like to match their DVR&Camera with different brand, because wide choice may mean more cost saving.