If you haven’t figured it out yet, we’re kind of obsessed.
See, we like to just sit and look at A/V equipment even
when it’s turned off. We just love looking at turned-off
HDTVs, especially the backs where all the many ports and
connectors are located.
Normal people, like you, probably want to actually look at
an HDTV program, not an inert HDTV. OK, so we can’t fault
you there. A couple of years ago, however, we would have
shaken our heads sadly and told you there were none to be
found. Today, however, there’s an ever-increasing amount
of HDTV programming available programming that will
elicit the appropriate oohs and ahhs from people visiting
your house.
In this part, we expose you to various ways you can get
high-definition content onto your HDTV. We start with a
general look at the signals available from the over-the-air
broadcasters, cable companies, and satellite companies.
We reveal why not all signals look the same from these
sources even if they’re broadcasting the same movie.
Different sources have different compression and transmission
capabilities. They all look great. But some will
look greater than others.
Then we drill down on each of the three major originators of
HDTV signals, starting with the over-the-air broadcasters.
We can thank the FCC for prodding the TV stations in the
direction of HDTV, but really thank the HDTV manufacturers
for making displays inexpensive enough to drive HDTVs into
lots of homes giving the TV stations rationale to move
to more digital programming.
We tell you probably more
than you want to know about HDTV antennae, and how to
optimize your connections to the OTA (over-the-air) folks.
Then we do the same with the cable industry, looking
at how the cable firms are positioning to deliver highdefinition
cable programming. We tell you about the way
HDTV signals are encoded and decoded, and the role of
your analog and digital set top boxes. We also tell you
about the new CableCARD capability that you are going
to start seeing in HDTV devices.
We wrap up the HDTV programming discussion with a look
at satellite programming firms and what they can offer. In
addition to talking about DirecTV and DISH (the two big
guys), we also explore the latest player in satellite-based
programming, VOOM. We walk you through what’s available,
how to upgrade to HD satellite service if you’re already a
customer, and even how to combine satellite service with
Internet access. Whew, that’s a lot! Aren’t you glad you
came here first!
Who’s Showing HDTV?
In the vein of “all dressed up and nowhere to go,” HDTVs would
be no good without content to show on them native, highdefinition
content, that is. Hollywood has done its usual: “If there’s
a place to put the content, we’ll come out with it.” And the manufacturers
have said, “If you make the content, we’ll build the systems.”
Lucky for us, DVDs and higher-definition camcorders have created a
lot of reasons to want higher-resolution TVs, and that has prompted
the broadcasters to follow suit with their own HDTV content.
Broadcast TV stations, for example, are heeding the FCC (Federal
Communications Commission) and beginning HDTV broadcasts.
Cable companies are offering at least some HDTV programming
(and usually not just “some” programming but “a lot”) in most of
their major markets. And satellite providers are offering HDTV to
pretty much the entire United States so almost no one is outside
the “footprint” of HDTV these days.
In this article, we take a high-level look at who’s offering HDTV,
what it takes to get the service, and what kind of HDTV content you
can get from the different providers. That last item can be important
to know if, for example, you bought your HDTV specifically to watch
The Final Four (we predict a big Duke run next year!) or for seeing
Tony and Carmela in the utmost detail on The Sopranos.
In the three articles that follow in this part of the article, we get
into a lot more detail about broadcast, cable, and satellite HDTV
the programming, its availability, and the equipment requirements.
Consider those discussions in this article a quick, up-front
primer move forward in the article when you’re looking for the
details.
Looking at Who Has HDTV
We’re in the midst of HDTV-mania. If you happened to have a dead
cat handy (and no, we’re not cat haters! We love cats, and don’t
want them dead, unless they’ve been very, very bad kitties), you
wouldn’t be able to swing it very far before you hit an ad for HDTV
sets, HDTV programming, HDTV services from a cable company,
or something HDTV.
This situation makes us happy. We’ve been going to the CES (the
Consumer Electronics Show the biggest HDTV-related trade show
there is) every year for a long time. And every year we hear, “This
year, this year, is the Year of HDTV!” Well, we’ve finally reached that
point in what must be the fifth or sixth official “Year of HDTV”
(YOH for short). Thank goodness.
The reason we know that it’s now YOH is the sheer volume of HDTV
programming that’s become available from different sources, and
the profusion of ways the average person can now access that
programming.
Broadcasters
One group of TV providers who have begun to really see the light
is the broadcast networks (such as ABC and CBS) and local affiliate
stations that broadcast the network content over the airwaves.
This hasn’t happened purely because the broadcast folks are being
good TV citizens. It’s because the FCC has mandated a transition
from analog to digital TV.
Eventually, all of these broadcasters will
need to turn off their analog signals and send out DTV broadcasts
(note that we said DTV, not HDTV lower-resolution 480p or even
480i signals can be broadcast).
It’s not all pressure from the FCC, however, that is driving this.
Broadcast networks are increasingly competing with what we’ll call
cable networks though it’s a bit of a misnomer, we use this term
to describe networks you can only get via cable or satellite (such
as HBO or TNT). Broadcasting in HDTV especially for big-ticket items like prime-time shows and major-league sporting events
gives the broadcast networks a leg up on cable networks (many of
which are still stuck in Analog TV Land).
Four of the five major broadcast networks (that would be ABC,
CBS, NBC, Fox and the WB) are broadcasting at least some HDTV
content. As we write, Fox is the lone holdout, but it promises HDTV
by the time this article hits the shelves.
The best thing about broadcast network HDTV (often called OTA,
or over-the-air) is that it’s free. Free as in free beer. No cost to you
(except maybe having to watch some bad ads). All you need is an
HDTV with a built-in or external tuner, and an antenna. In Article 8
we give you some more detail on this.
Cable and satellite networks
The cable networks (the networks you can’t get with a rabbit-ear
antenna) have not been sitting around idly while broadcast networks
began to send out this free HDTV to their viewers. In fact,
many cable networks have developed and launched their own
high-definition channels ranging from movie channels (such as
HBO or Showtime High Def) to sports channels like ESPN-HD.
The biggest problem that cable networks have had is finding cable
or satellite networks to carry these channels to customers. To
understand why, skip ahead to the section titled “All HDTV Signals
Are Not Equal.” Go ahead we’ll wait right here for a moment.
Basically (in case you didn’t skip ahead), cable and satellite systems
have a limited amount of bandwidth (or slots for TV channels)
within their broadcast systems. HDTV uses five to eight times as
much bandwidth per channel as does analog TV or to reverse
that, you can fit five to eight analog TV channels in the slot occupied
by one HDTV channel. So it’s taken a bit of time for cable and
satellite companies to begin to show interest in carrying HDTV
channels they thought they could make more money off eight
analog channels of fly-fishing and underwater basket-weaving than
they could from one HDTV broadcast of The Final Four. The good news is that both groups of TV providers have begun to
carry at least a handful of HDTV stations often more. To get into
these HDTV cable signals, you need the following:
- An HDTV service contract with your cable or satellite company.
Unlike broadcast, this isn’t free you’ve got to pay
the piper.
- An HDTV satellite receiver or set-top box (for cable).
In Article 9 we discuss digital-cable-ready TVs and
CableCARDs, just now hitting the market, which will let
you skip the set-top box.
Specialized HDTV stations
Existing broadcast and cable networks aren’t the only ones to realize
the potential of HDTV. A small flurry of new networks specifically
delivers HDTV channels to cable and satellite providers.
A good example of this is HDNet (www.hd.net), the brainchild of
Dallas Mavericks owner Mark Cuban. HDNet was launched with the
sole purpose of providing a range of original programming (news,
sports, and series) along with licensed programming from other
studios (like Andy Richter’s show!) all in full 1080i HDTV. Danny
is particularly interested in HDNet’s show “Bikini Destinations”
(Pat made that up!).
You can get HDNet’s two channels on both of
the major satellite networks, as well as a growing number of cable
provider’s networks.
HDNet was the first, but not the last high-def-only network. For
example, a cable-only network (owned by a consortium of cable
companies) called INHD (www.inhd.com) provides two channels
with a variety of original and licensed programming of sports,
movies and other content (hey, that sounds familiar, huh?).
Making Your Choice
We have some good news and some bad news. The good news is,
you probably have a choice of where you get your HDTV content.
The bad news is well, you have to choose. This means, if you’re
like us, hours of research and poring over Web sites, trying to
figure out what works best to fit your HDTV needs.
Well, there isn’t a magic bullet for you here in HDTV For Dummies.
Because HDTV availability is highly dependent upon exactly where
you live (we mean right down to the street address it can differ
even within neighborhoods), we can’t give anything but the most
general advice.
There’s nothing wrong with mixing and matching amongst these
different sources. For example, if you want local HDTV content
along with your satellite-TV source, you need to hook up an
antenna to your dish and pick up the OTA broadcasts luckily,
most HDTV satellite receivers have a built-in OTA HDTV tuner, so
you don’t need extra equipment (beyond the antenna).
So, given that wishy-washy disclaimer (sorry, but it’s true!), here’s
Pat and Danny’s official advice:
1. Figure out what’s even available. In each of the following
three articles, we give you some pointers to Web sites and
other resources that will help you find out what you can
get in your house.
2. Look at your budget. Keep in mind the fact that “free”
OTA HDTV may not be free if you have an “HDTV-ready”
system, and need to spend hundreds of dollars on an external
HDTV tuner. Cable, on the other hand, might include a
monthly fee, but doesn’t require any “up-front” expenses
for tuners or set-top boxes. Many cable companies give
you local HDTV channels free for the price of the set-topbox
rental ($10/month or less, typically). Satellite may
have lower monthly fees than cable, but also requires an
up-front purchase of the receiver.
3. Examine closely the channel lineups available to you.
Remember that quantity and quality are two different
things. For example, the new HDTV satellite company Voom
(www.voom.com, discussed in Article 10) offers 35 HDTV
channels more than anyone else but you may not be
interested in watching all of them. For example (and this is
a totally made-up example, so please don’t sue us, Voom,
because we love you!), do you really want to spend your
HDTV viewing time watching some nature special on the
mating habits of frogs? Look for the channels you love.
4. Consider the performance. In the following section “All
HDTV Signals Are Not Equal,” we discuss some of the ways
that various TV providers throttle back their HDTV signals
to save bandwidth on their networks.
In the end, you may find something that we haven’t mentioned, or
something less than coldly rational and logical (Mr. Spock to the
bridge!) that makes you decide on an HDTV provider. For example,
for Pat (actually, for his wife, who is a huge baseball fan) it was a
no-brainer he wanted satellite, but then his local cable company
started broadcasting 100+ San Diego Padres games in HDTV each
year. Case closed cable it is for Pat.
All HDTV Signals Are Not Equal
Not all HDTV signals are equal across all providers.
When the
signal is sent from its source to you, it is usually compressed to
cut costs and bandwidth requirements. How much the signal is
compressed and what digital encoding scheme is used
determines a lot about what you see on your HDTV.
MPEG-2 is the standard used by digital-TV broadcasters today to
compress, encode, and then ultimately decode the TV programs.
This is necessary because there is not an unlimited amount of
space available on the cable, satellite, and broadcast-TV networks
for transmitting these signals.
So suppose an over-the-air broadcast TV signal starts out its life at
the central network hub as a 1920-by-1080i signal. This signal can
first be encoded for broadcast at a rate of around 995 Mbps. By the
time it is sent to you over the air, it’s compressed to a mere
18Mbps signal. That’s a lot of compression, but the picture still
looks great.
If the station chooses to compress that signal a little more, say
down to 13 or 14 Mbps to make room for other channels in the
same signal, then the compression is even greater. We can tell you
that the difference between an 18Mbps and a 14Mbps signal is
indeed noticeable, especially when the programming contains a lot
of motion. And don’t forget, once the signal enters your HDTV set,
it will probably encounter another round of downward resolution
as it tries to put the original 1080i image on, say, a 720p TV set.
Satellite providers also have similar compression challenges.
Transponder space (the satellite-located transmission systems) is
so expensive that compression is required for everything. Popular
channels are typically encoded at 15 Mbps or more before they
go to the satellite operators. Depending on the available satellite
bandwidth (could be 24 MHz or 36 MHz, which yields 27 Mbps
and 40.44 Mbps of bandwidth respectively), satellite operators
can compress these 15Mbps signals down to 13.5 Mbps, so they
can cram two or three HDTV streams on these satellite signals,
respectively.
Cable operators have about the same options with the two major
digital-cable modulation schemes in use today 64QAM, which
offers a max bandwidth of 27.7 Mbps, and 256QAM, which has 38.8
Mbps available. They can compress the signals further, and cram
more channels into each signal, or they can offer higher-quality signals
as a way of competing better in the market. After all, the
38.8Mbps rate of the cable companies is twice the bandwidth per
signal compared to the 19.4Mbps data rate of the broadcast TV
folks so they can send two HDTV streams for each single HDTV
stream that the over-the-air stations can send.
Cable companies have to deal with the sheer number of places
where the signals are converted from digital to analog and back.
Signals start out as digital, but may be converted to analog composite
by the distributor. The signal is converted to a digital composite (that is, component) signal by the recipient cable operator.
Then, as it’s fed into the TV display unit, the signal is converted to
one of several types of video signal: analog component, S-video, or
composite. TVs that take in digital signals via digital interfaces can
reduce some of this conversion as can improvements in signal
distribution between the broadcasters and the operators.
So, as complicated as this is, what’s it all mean for the average
buyer? Here’s how we can net it out for you:
- Not all HDTV signals are going to be the same. It depends on
how the broadcasters compress the signals for the stations
that you want to watch. Channels with a lot of action (like
sports) tend to get more bandwidth; channels with a lot of
static pixels like the Home Shopping Network or any cooking
channel can survive more compression.
- If you plan on watching a few channels a lot, do some
research. Your ultimate goal would be to find out how much
bandwidth these channels are using. You can’t (easily) measure
this yourself (and it’s about impossible without installing
the service, if you’re using cable or satellite), but try to find a
local bulletin board or newsgroup online to see what the local
HDTV nerds have to say. For example, Pat spends a lot of time
on http://hdtv.forsandiego.com/, reading about experiences
with local HDTV options. You’ll find enthusiastic, smart
folks who have the tools and the know-how to examine HDTV
bit streams, measure them, and come out with concrete evaluations.
Also, watch your neighbors’ TVs now and then, and
compare what you can if it looks different, it probably is.
Who’s required to do what?
Your over-the-air digital TV broadcaster only has 6 MHz (19.39 Mbps) of bandwidth
over which it can send its TV signals. It can fill this in anyway it chooses, combining
such broadcasts as HDTV, SDTV, weather images, and even FM broadcasts onto
one bandwidth stream. The FCC, through its DTV rules, has said broadcasters must
transmit one standard-definition digital-TV signal 480i and has not said anything
about requiring HDTV.
So TV stations have to make some economic decisions about how best to use that
signal. In one chunk of 6MHz bandwidth, a broadcaster could send one full-quality,
720p 60-frame-per-second (fps) HDTV program; or, two shows, one (say) for a 720p
or 1080i HDTV show and one 480i SDTV show, both at 30 fps; or, four 480i SDTV 30
fps shows. How a station mixes and matches its signals depends as much on its
technology as its positioning in the market.
Something’s in the Air
In most ways, HDTV is an amazing leap into the future. It’s digital!
It’s high-definition! It’s shiny and new! It’s expensive!
But HDTV does have one aspect that brings us all back to the
olden days of black-and-white TVs the antenna has reappeared!
And with the antenna comes all the fun of Dad standing on one foot
and twisting the rabbit ears just so to bring in that hard-to-tune
channel.
Okay, so it’s not that bad (most of the time), but it can be challenging
to tune into over-the-air (OTA) broadcast TV. We’re not going to
kid you here cable-TV or satellite setups are much easier to use
than an antenna.
But OTA HDTV is free. FREE! And nearly every household in
America is in range of at least one of these free HDTV stations
(99 percent of homes, according to some sources).
In this article, we discuss how you can figure out what OTA HDTV
signals are available in your location (there are some great online
tools!). Then we help you pick out the equipment you need (an
antenna and a tuner), and finally we tell you how to get it all set up.
Finding Local HD Broadcasts
Before you do anything else, do your homework. In the case of OTA
HDTV, this involves simply spending a little bit of time online looking
for broadcast HDTV channels. Now you don’t have to do this
research online, but if you have Internet access, that’s the best way
to do so.
If you don’t have Internet access, talk to the retailers from whom
you’re buying your HDTV they probably have firsthand knowledge
(or at least anecdotal information) about local HDTV signal
availability. They may also have a kiosk that provides access to
the same online information we’re going to talk about shortly.
The Consumer Electronics Association (CEA) is the huge (and
hugely influential) trade organization that includes just about every
HDTV manufacturer in the world. So it has a vested interest in getting
people to buy HDTVs. This interest is sometimes manifested as
lobbying efforts with the FCC, or efforts to develop marketing and
industry. It also pops its head up in the form direct-to-the-consumer
education efforts.
In the case of HDTV, the CEA had the brilliant idea (we’re not
being facetious, it really was brilliant!) of providing an extremely
easy-to-use HDTV “signal finder.” In conjunction, with a company
called Decisionmark, the CEA has created this online system
(called TitanTV) that lets you enter your address information,
press a button, and come out the other side with a nice listing of
all your HDTV-channel choices.
Just go to www.titantv.com and follow the on-screen instructions.
You can also access TitanTV at many HDTV retailers, and
come home with a printout of your available stations.
Not only does TitanTV find OTA stations for you, it also comes up
with the cable and satellite stations available to you. You can do a
quick comparison and see what best meets your needs.
The CEA and Decisionmark have also teamed up to provide you with
another way to view a listing of local HDTV broadcasters with their
AntennaWeb.org system, which we discuss later in this article, in
the section titled “Choosing the right antenna.” AntennaWeb.org is
basically the same underlying database, optimized to help you
choose an antenna TitanTV is designed to help you see what
shows are being broadcast.
Tuning In
HDTV breaks the old TV paradigm in many ways. One big difference
is that not all HDTVs have a built-in TV tuner. Back in the
olden days of NTSC and analog TV, this was quite rare a few
high-end TVs were “monitors” and required an external tuner, but
they were definitely in the minority.
With HDTV and OTA HDTV broadcasts, the situation has been
reversed at least for the time being (more on that soon). Many
sets sold as HDTVs today are HDTV-ready, but don’t have any electronics
inside them that can pick up an OTA HDTV broadcast (or any ATSC broadcast, whether high-definition or standard-definition
and if you have no idea what we’re saying right now, check out
Article 1 for a definition of ATSC and NTSC).
The government is requiring TV manufacturers to include built-in
tuners that can pick up OTA HDTV, starting with bigger (36+-inch)
TVs in 2005. Soon this lack of tuners won’t be a problem.
Building on a built-in tuner
If you have an HDTV with a built-in ATSC tuner, you’re just about all
set.
All you need to do is find the appropriate antenna (see the following
section “Antennas A to Z”), make the connections, and go.
It’s really that simple or at least it can be.
Just follow the instructions in your HDTV’s manual for tuning in
the HDTV stations we can’t help you there, since each HDTV
on-screen setup process is different.
Some HDTVs with built-in ATSC tuners also have special tuners that
can decode QAM-encoded HDTV signals. QAM is the system used
by most cable-TV networks. This means you may be able to pick up
your local broadcast stations by just plugging in your cable TV connection.
Note that this is different from the DCR (digital-cable-ready)
systems we discuss in Article 9. And no, this has nothing to do with
using an OTA antenna, but we thought it was a nice morsel of information
to know in case you’re ever asked this question at a neighborhood
BBQ.
Adding on a tuner
If you own an HDTV, chances are good that you won’t have that
built-in ATSC tuner we mentioned in the previous section. Your
HDTV probably has an NTSC tuner which can pick up analog
broadcasts but it probably is only HDTV-ready, so you need to
pick up an HDTV tuner box that you can connect between your
antenna feed and your HDTV.
|