The invention of television cannot be credited wholly to a single inventor. The technology to transmit moving images was not easy to develop. Many scientists and inventors tried to solve the ultimate challenge of transmission of clear sound and images. But the television, which has become an indispensable part of our life, was a result of many pivotal inventions and discoveries made earlier in the late 19th and early 20th century. Scottish engineer John Logie Baird is widely credited as the inventor of television but in technical terms, he was the first to develop the mechanical TV. Other pioneer inventors who were associated with the development of television were Vladimir Zworykin, Kenjiro Takayanagi, Kálmán Tihanyi, and Charles Francis Jenkins etc.
- First Mechanical Television
It was the Scottish engineer John Logie Baird who demonstrated the first working system of the mechanical television on 26 January 1926. However, his invention was built on the previous discoveries made by Alexander Bain who also invented the facsimile machine. Baird also invented the first colour television and demonstrated it in public on July 3 1928.
- First Electronic Television
Philo Taylor Farnsworth from the state of Utah, USA was the first inventor to find a way to transmit image data relied on the electronic technology alone. Philo got the patent for first totally electronic television system on August 26 1930. Previously Philo Farnsworth had demonstrated the first television signal transmission on September 7, 1927.
- Digital Television
Japanese were the first to develop HDTV formats in digital television technologies. We are living in the era of digital TVs where images and sound are broadcasted as discrete bits of information rather than as a continuous analogue signal providing superior image resolutions and audio quality. Now some countries have stopped the transmission of analogue signals for televisions. They have fully converted to the digital ones.
- 4K, Full HD & Ultra HD Televisions
4K technology has enough pixels to fill four Full HD 1080p screens while traditional HD is limited to 1920 vertical columns and 1080 horizontal rows of pixels The Ultra HD has a total resolution of 3840 pixels by 2160 making it one of the clearest screen views in the world. Generally, ultra-high definition televisions have 16 times the resolution of a high definition TV. More pixels in a television mean more picture details and clarity to show.
- HD 1280X720(720p)
- Full HD 1920X1080(1080p)
- 4K or UHD 3840X2160
- 8K or Full Ultra HD 7620X4320
The modern televisions have come a long way and now they are really very advanced in terms of clarity and efficiency. From the 1920s to the 2020s, it has transformed into a complex device providing entertainment, information, education, news and other useful resources to people all over the world. We owe much to the inventors like J. L. Baird and Farnsworth who revolutionized the image communication by inventing the first mechanical and first electronic televisions respectively. Various new display technologies like LCD, LED OLED, QLED and retina display etc. are used nowadays by television manufacturers to design screens.