[opendtv] Re: B&C: Microsoft Claims Rural White Spaces Plan Could Cost Less Than $12 Billion
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: "opendtv@xxxxxxxxxxxxx" <opendtv@xxxxxxxxxxxxx>
- Date: Fri, 14 Jul 2017 18:02:37 +0000
Craig Birkmaier wrote:
There is noting to prevent broadcasters from using their spectrum to
offer both broadcast and two way services. The ATSC 3.0 standard has
any hooks for two way services.
Craig, honestly, I asked for proof, and I gave you the ATSC site that has the
3.0 standards. And the best you can come up with is vague words? Proof, Craig.
Expend some effort.
Show me the ATSC standard that creates a broadband service out of a
broadcaster's 6 MHz channel, and show me any mission statement from the ATSC
that includes OFFERING such broadband service, in their plans.
Obviously, anything can be done in principle. One way, the ATSC could stamp
their logo on top of IEEE 802.22, and be done with it. Or, perhaps easier than
that, individual broadcasters can say, "the heck with TV, I will become an
802.22 broadband provider." But show me any justification for your words, that
ATSC 3.0 has this in their mission statement.
As far as anything I've read from credible sources so far, ATSC 3.0 is supposed
to leverage off Internet broadband service, for its interactivity,
supplementary information, and video on demand services. But nothing to suggest
that it provides those broadband services. Do they have such intentions for the
future? Do the numbers even make any sense? Surely, a broadcaster offering
broadband over his 6 MHz channel won't have much of any capacity left for TV?
Numbers, Craig?
Parenthetically, although this qualifies as "spoonfeeding," ATSC A/96, "ATSC
Interaction Channel Protocols," which applies to ATSC 1.0 and has probably not
been implemented ever, states the following:
"5. PHYSICAL AND DATA-LINK LAYER PROTOCOLS
"This specification does not define the physical and data-link layer protocols
that ITV clients may use to communicate with ICP [interaction channel
protocols, e.g. IP over an ISP network] servers or home network devices.
Implementers should use the access technologies they consider adequate
according to the environment in which the ITV client operates, and according to
their own marketing and business plans for network integration."
So, the two-way channel is separate from the broadcast channel, in the physical
and data link layer. Somehow or other, within the TV set, the information may
be synchronized to what's going on in the broadcast.
You can also read Section 4, which gives options such as local "interactivity,"
using local storage and a data carousel as I described previously, or using the
Internet.
Or, A/336:
"This document describes the method for a receiver to recover content via a
broadband interface once it has acquired an ATSC 3.0 watermark payload or has
identified content using fingerprints. It also specifies the format of certain
files that may be returned in response to such a content recovery request." In
other words, the interactivity channel requires a two-way "broadband
interface," and separate from the broadcast channel.
Or, A/338, which describes how an ATSC receiving device can be made to
incorporate a web server, accessible by a local companion device such as
smartphone. Here too, no interactivity occurring over the broadcast channel.
This talks to interactive service, as it has been defined so far. Your job now
is to show evidence that ATSC 3.0 is to do much more than this, going so far as
to offer broadband service, not just leverage off broadband service, and
furthermore, offer broadband service as part of ATSC 3.0. Proof?
Bert
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