How does high -resolution television work?

Later in the 20th century, broadcasting began to introduce high -resolution television (HD) to provide better brightness and image resolution than standard analog or digital television. This improvement was done simultaneously as TVs with LED (LED) emitting light (LED) and liquid crystal (LCD) in flat screen formats provided the necessary high -resolution signals. High -resolution television (UHDTV) provides up to 16 times more picture or pixels than HD screens, allowing high -resolution image quality on larger screens. Analog high resolution required up to four times the signal bandwidth of standard TV, which reduced its use. The development of digital signals, where the image and sound are converted into binary zeros and those, then converted back to the TV format at the receiver allowed much more data to perform a signal band. The development of high -resolution television and ultra -high distinctionBy means of new digital compression technologies, which takes a standard digital signal and compresses it electronically to allow more data to transmit an existing signal. These improvements allowed high -resolution signals to customers from 90 years.

Since customers demanded larger TVs, manufacturers have improved high -resolution signals and electronics to allow TVs with 50 inches (125 cm) and larger screens to make. There are limits of the screen size using high -resolution signals, because eventually the image quality deteriorates and the frequency of the screen called scanning is visible. These limitations have led to the development of high -resolution television technology to allow high resolution on larger screens. UHDTV was first demonstrated in 2002 by scientists of the Japanese state transmitter NHK.

Initial development UHDTV was limited to the labAtory testing of signal transmission and digital compression because the UHDTV signal requires a very large amount of data. Further data required the development of new digital compression and transmission technologies, as high -resolution television signal could not be sent via existing television frequencies. Early UHDTV tests were signals transmitted from the United Kingdom to Japan, which included very high zone width requirements from a specialized frequency.

One of the problems of high -resolution television technology is the nausea caused by the movement caused by the movement of large images on the screen. Initial testing with consumers showed that some users had similar symptoms of UHDTV images to move the disease. Due from the screen, limiting the use of UHDTV to larger rooms or location, can reduce symptoms.