How HDTV Programs Develop In The Recent Years?

It is quite familiar for some people to hear HDTV. It is currently found by a company in Japan. The first analog HDTV program has been broadcast on June 3rd, 1989. It is a latest sophisticated technology of television in recent years, and well known as a television that has higher resolution. Though it used to have analog techniques, but today the company has widen their innovation to be more sophisticated, that uses digital broadcast using video compression as well. This is one of the advantages using this product. HDTV used to be described as a television systems series that originated from the late of 1930s.

Before it comes to be HDTV, The British also had high definition TV that was started on August 1963 that was starting their service on November 1936. The British high definition TV using the Baird 240 line (mechanical) and Marconi-EMI 405 line (electronic) systems. But then, the mechanical system was stopped on February 1937. The France also invented their own new 441 line system, but that France invention then used by other countries. Then US joined in 1941 with their NTSC system. France introduced a higher resolution standard 819 lines in 1949, then this system would be high definition even by today's high definition TV standards, though it was only for monochrome.

In the United States, this technology was introduced for the first time in the 1990s by the Digital HDTV Grand Alliance. The Digital HDTV Grand Alliance is a name of a group of television companies. There was a testing field that used to test the product at about 199 sites in the United States was completed in August 14th, 1994. On July 23rd, 1996, the first public HDTV broadcast in the United States was occurred. Then, in October 29th, 1998, the American Advanced Television Systems Committee (ATSC) HDTV systems had been launched.

There are three major parameters to identify HDTV broadcast systems; they are frame size, frame rate, and scanning system. The Frame size (in pixel) is defined as number of vertical pixels x number of horizontal pixels, for example 1080 x 1920 or 1280 x 720. The next one is Frame Rate which is identified as the number of the video frame per second. The last parameter is Scanning System that is identified with letter i stands for interlaced scanning or p as progressive scanning. There are some advantages and disadvantages using this product. The advantages are the excellent sounds quality from Dolby sound technology application. It is helpful in battering user experiences using HDTV interlaced scanning techniques.

Besides the advantages above, there are also some disadvantages using this technology. The first is DVI Compatibility require a separate sound audio which carries video signals only. Therefore, you need a HDMI-DVI connector. Another disadvantage in using it is the multi-channel audio which can not transmit the multi channel and the standard two channel stereo signal at the same time. Therefore, now is your choice to use them or not. One thing for sure, HDTV has more advantages rather that the disadvantages.

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