Using QT for Digital TV menu system?

Hi
I received this ambitious requirement of developing a menu system for Digital TV. Sounds very interesting work; but I am from pure Mirosoft.Net world. So, I need some help in figuring out a feasible solution.

Here are few very high level requirements:
- The system should run on Windows, Linux, Mobile and Macintosh. So far, I think it has to be a desktop style app not browser based due to very high speed and visual quality requirements.
- The system should have a light-weight mechanism (database or files?) of storing/updating data.
- The system should have ability to connect to internet for data updates or what not.

What are hardware components options? Basically, where will the system be eventually deployed in TV?
What are the options for runtime environment? (O/S, runtime library, data storage etc)
What are the options for development? (Language, IDE, database etc)
What are the deployment options?

Someone suggested me to check out QT for developing it so here I am. Please advice.

Thanks
Pankaj

You can meet all three requirements with Qt, but I'm not sure what a "menu system" for a TV is supposed to do on a PC.

Exactly my thoughts. But client is pushing for it right now. Maybe later.

Thanks for responding.

Still few things eluding me like :
Which database is suitable for this?
What hardware and run time environment?

Thanks
Pankaj

If you are going to program for Qt, I suggest the IDE QDevelop Database I suggest MySql. If you want to see what some other Qt programs for TV do, check out Mythtv. I use that instead of a Tivo.

Thanks. Will check these out.