Since the first form of HDTV was introduced in the U.S., there have been groups that have a problem with this new form of technology transfer.

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The electronic media are appalled and can be excluded from the HDTV market because HDTV required more bandwidth (the amount of information about the channel or link), a standard TV. These media are concerned because the channels were not allowed to be in a position to manage the bandwidth for this new form of television. They also feared that with the new HDTV channels, there would be fewer opportunities for all channels picked up by new cells, then at least of career opportunities.

U.S. Congress by the idea of HDTV for various reasons. You see this innovation as a threat and the Japanese are concerned that Japanese companies to make millions of dollars from U.S. consumers, as she had introduced to the VCR.


disorder avoid these two initial problems were resolved after the U. S. Federal Communications Commission USA, a group of American researchers and manufacturers to develop the so-called Grand Alliance to a fully digital HDTV format. It’s not only helped the Americans qualify for permits HDTV, HDTV, digital format but is passed through the existing channels that are already being used by broadcasters. solved

With these problems has gained momentum and popularity of HDTV. But with this popularity, the problems seen HDTV.

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Unfortunately there are still unresolved problems with today’s HDTV These problems include:.

costs

interlacing problems Money, Money, Money is a
important issue for the HDTV channels and consumers. The transition to HDTV, are broadcasters usually required to buy a new camera and editing. Radio and television have transferred to new towers, the signals and reconstruct the control room with new equipment, the building compatible with HDTV transition. There is a feeling that only few can afford, broadcasters and consumers usually have the same complaint.

Buying a new HDTV costs a thousand Dollar U.S. consumers, especially when combined with the necessary equipment. For HDTV you need, or receiving antenna, cable or satellite HD.

Get a clear picture concerns
bandwidth constraints. Assignment of conventional 6 MHz bandwidth per channel, and in most cases it is not enough to transmit the HDTV signal. The pictures are on the analog TV typically 525 lines scanned at 29.97 Hz with a horizontal resolution of 427 pixels transferred. But there are lots of HD 1050 with 600 lines of pixels and thus the bandwidth of 18 MHz, which is clearly not in the 6MHz channel. One solution is to transmit HD signals through new channels of 20MHz. But terrestrial broadcasters are likely to have problems with this because he reconsider the matter in question in 1980 with the introduction of HDTV.

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broadcast distribution list issues for many HDTV channels are not yet adopted this technology. The fact that HDTV is not yet widely available to become a problem for consumers. Although the FCC mandate that by 2006 analogue television will be removed to replace the HDTV, most consumers are still not convinced.

In many areas local cable does not yet offer HDTV. So people can invest, the HD will, either satellite or antenna, and sometimes both, to be very expensive.

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Compression is another problem. Although more channels with more bandwidth available, many HD signals too large to be through these channels without compression.

software that compresses the HD picture is, is called MPEG-2. This software is responsible for the registration of each image just enough without them seem to missing persons elements.Many frown on this type of compression, with a reduced image quality. However, others argue that even with a deterioration in the quality, the HD picture, well above the average of analog images.

Filigree peak
interlacing can cause problems with interleaving with HDTV storage and transmission bandwidth used is divided into two half-full-screen HDTV images. one for odd lines and other horizontal pairs of horizontal lines.

The problem with interlaced images is that it may fail if the two fields recombined in a field. Many people do not like the visual effect that an effect of entanglement stairs often exacerbates the largest screen HDTV or monitor ‘. to stay

Even with problems such as high costs and distribution problems, many still claim that HDTV is here and that many problems can be overcome in the near future. HDTV proponents say it’s only a matter of time before all the technical shortcomings of the process definition and HDTV and High is becoming more popular HDTV systems will become more affordable and the service will be available at the end of the cable companies and local satellite.

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