Use cases of TVSourceType

Hi all,

I'd like to know the use cases of TVSourceType. Could somebody provide them
please?

Currently I'm polishing the result of the TV app dev meetup in Tokyo with
Daniel and found that I can't understand the semantics of TVSourceType,
because it contains terms from different classes in broadcasting standards.

For example, "1seg" is a profile defined in "isdb-t" specwisely, while, at
the same time, "1seg" is a type of service in "ISDB-T" transport streams
MPEGwisely. So having both "isdb-t" and "1seg" in the enumeration looks a
bit weird but I think it's okay to have both of them if required by the use
cases.

Regards,
Yosuke

-- 

Yosuke Funahashi
co-Chair, W3C Web and TV IG
Web Media Specialist, W3C
Project Associate Professor, Keio University