[opendtv] Re: Twang's Tuesday Tribune (Mark's Monday Memo)
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Fri, 7 May 2004 14:28:18 -0400
> The best solution is to use a primary default cache queue
> which simply fills
> everyone's cache with some default or universal content, and
> a secondary
> prioritized queue that lets receivers pick out content as it
> comes by which
> is specifically tagged with group and target IDs.
But without a separate unicast two-way channel, you're back to
transmitting the ads that are targetted to individual customers
over the broadcast channel. That's what makes this inefficient.
Even very low bit rate spam will add up to a lot of bandwidth
as you increase the number of uniquely targetted ads you
broadcast, and use of the carousel just compounds the problem.
It's all a matter of degree, of course. The more individualized
the ads, the better it is to use a unicast medium for their
transfer. Over cable, no problem. You have the unicast two-way
channel right there.
Bert
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