this is from Joe Kane: I think the last line is particularly indicative of HDTV problems in the states.
http://www.videoessentials.com
Notes From Joe Kane?s Presentation at the five CEDIA Regional Conferences for the year 2000.
From the Desk of Joe Kane:
It has been said that DTV can be rather complex. There are the obvious considerations of multiple scan rates, multiple
aspect ratios, lack of video test patterns for setup, component video switching, component video routing, display device
scan rate and resolution issues. Any one of these topics may be beyond the average consumer, let alone all of them together.
DTV is complex enough so that most early adapters will need the help of a well qualified home theater installer.
Adding to the confusion about DTV there is a bantering of sorts going on between the Consumer Electronics Association (CEA) and the broadcasters (FCC and NAB). The quality of products being brought on the market that are "DTV Certified" don?t all meet broadcasters? expectations. CEA is hinting that the broadcasters might be going slow, suggesting that they are possibly abusing the trust Congress placed in them by providing a second TV channel during the transition from analog to digital. There are certainly suggestions that part of the 8-VSB versus COFDM transmission system discussions are designed to slow the rate at which broadcasters have to implement DTV. (In reality, the 8-VSB or COFDM modulator is
such a small part of the package as to be of little or no consequence in time or cost.)
In the mean time consumer products sponsored HDTV programming on the three networks looks spectacular. (That too may go away as sponsors are not seeing a short term return on their investment.)
Taking a close look at DTV at this early stage you might say it?s one step forward and several steps backwards. Certainly we are back to putting up antennas and having to pay particular attention to the quality of the RF distribution system. Once the RF is demodulated and the digital signal converted to baseband analog, three wires are required to route the video, not one as in NTSC. It takes a far better display device to show DTV signals, standard definition or high definition. Every DTV
scan rate has to be individually set up. Then there are all those aspect ratios.
Of equal concern is that certain DTV equipment of particularly good quality has come on the market then disappeared or is
about to disappear. Among the items already gone are the Panasonic TU-DST 51W DTV Receiver and the Panasonic PV-HD1000 D-VHS recorder. As of April 2000 we?re even finding the AY-DF300 tape is in short supply although Panasonic assures us that will be resolved in short order. There are still some DTV receivers and D-VHS machines left in the retail pipe line. Our latest sightings have been at Sears and Costco stores. About to go away is the Princeton AF3.0HD, the only good option in a direct view DTV monitor in its price range.
Replacements for these devices will eventually come to market. Depending on the item, it will either be a long time arriving and/or cost a lot more.
While there are many of us who would like to see D-VHS go away; search functions on tape can?t begin to match DVD, it?s all we have to record HDTV at the moment. In April 2000 JVC announced a copy protection system for D-VHS that may bring that product back to life until recordable HD-DVD takes its place.
As complex as DTV may seem, there are workable solutions, even if they are currently hard to find. It is certainly hoped
that advancements in technology will make DTV?s implementation relatively simple in the future.
It has been suggested that the next few years are a dress rehearsal for the real coming of DTV in the year 2006. That?s the year congress hopes to be able to pull the plug on analog terrestrial TV transmission. We suspect it will be long after that before high quality DTV is easy to implement.
The best we can do here is to make you aware of problems we?ve encountered in implementing DTV and provide an overview of the solutions. We?re covering a lot of basic information, including some of which hasn?t been critical in installations since the coming of cable TV, yet could now spell trouble in a good DTV installation. The most important part of this presentation is the inclusion of resources, places where you can find answers.
It is important to keep in mind that the real justification for DTV is efficient use of bandwidth. We may not see a lot of high definition from broadcasters, but consumers and broadcasters should be forced to quickly move to DTV.