วันจันทร์ที่ 14 ธันวาคม พ.ศ. 2552

Switching from analog to digital TV

Have taken the digital revolution in the television industry seems to age in order to reach the consumer. E 'was hard because it produced the cooperation of companies' needs, the equipment in order to receive and transmit digital pictures, television programs, both TV and movies and TV film production and television viewing. This situation was exacerbated by the fact that the industry standard for digital technology wascalled into question and the people are very reluctant to commit to one technology or another. This article traces the development of analog TV standard for digital television.

Most people continue to receive analog television today. Analog TV is a 60, but produces good images. In North America, Japan and parts of South America, the analog standard is the National Commission for TV standard (NTSC) and Europe and most otherParts of the world, or Phase Alternating Line (PAL) or Sequential Color with Memory (SECAM). SECAM is used mainly in France and French regions of Africa. Many countries, SECAM moving gradually to the PAL system, including the countries in Eurasia and countries of the former Soviet republic had. Although there are many differences between the three technologies is that the viewer the resolution on-line. The system displays 525 lines on NTSCScreen-and PAL-625 displays.

These analog systems have worked well for 60 odd years and the only reason for concern and a major reason for change is that the signal was often in disorders that can affect image quality.

The process by which the average household receives digital television is changing. As the average house have analog TV, digital photos, the image quality, but can not receive digital signals. This means that the signalcould be clearer, but before displaying the image so that image is to be converted to standard analog (NTSC visible in 525 or 480). Thus, the means for image transmission is digital, but the display is still analog. In general, the analog conversion by a decoder or a satellite system is implemented.

The endpoint of this phase of development is included on the digital transmission to a display or digital television. When this happens, can say with certainty that youDigital TV. A new standard for digital television has been created and will serve as the Advanced Television Standards Committee (ATSC).

Where the means of media production, transmission, or distribution of such media and display devices are the media, all of the ATSC standard, then the benefits of digital television is very important for the average viewer.

Again, the average citizen does not care about the technologybehind digital television. You only need a high-definition TV or HDTV. HDTV has a resolution analog system much better line. This means that could be the solution up to 720 or 1080 lines. This is an excellent image quality. This quality is the accuracy of the transmission of digital broadcasting, digital television, the best TV is connected to.

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