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Digital TV receiver

The change from analog electronic circuitry to digital electronic circuitry in the consumer electronics industry has brought about wide spread change in the products utilized by consumers. Digital television is an emerging technology which is becoming increasingly popular with the public. In analog television, when a problem arises the picture typically degrades in a way that the user understands. For example, the picture may become fuzzy, or lose horizontal synchronization, to name only a few. Digital high definition televisions typically produce higher quality television images and sound than conventional television systems. As a result, a growing interest in digital TV broadcasting has cultivated many efforts to compress video data for transmission and reproduction. Typically, a moving picture expert group (MPEG2) is used as the algorithm to compress video signals. The MPEG-2 standard addresses the combining of one or more elementary streams of video, audio and other data into single or multiple streams that are suitable for storage or transmission. One of the more interesting aspects is the introduction of so-called high definition television (HDTV), the broadcasting of which was recently approved by the United States Federal Communications Commission. HDTV will provide television images of much higher quality and definition than is provided by preexisting "conventional definition" television systems. In a digital television broadcast system such as a DVB (digital video broadcasting) or a DTV (digital television), a transport stream of the MPEG2 systems is used in a multiplexing system. Digital television (DTV) affords the opportunity to augment the basic audio and video content that characterizes an analog television program. For example, a DTV program may include multiple audio and video elements. A DTV transmission may also include a number of data elements to provide ancillary services in conjunction with the visual and audio elements of a program. In general, a television receiver (TV) that displays images by restoring broadcasting signals, which have been compressed into digital signals, through a decoder built in or outside the receiver is called a digital TV. The digital broadcasting receiver receives various frequency bands, that is, a plurality of broadcasting channels, and synchronizes a tuner of the digital television to a main frequency of the bandwidth, signals of which will be received, in order to receive the signals of the corresponding frequency band. Digital television (DTV) networks are comprised of a plurality of transmitters, each broadcasting the same signal using multiple frequencies or a single frequency.

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High definition television (HDTV) High definition television (HDTV) (0)

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