The way we receive information and entertain ourselves has changed with the invention of the television. Philo Farnsworth, an American inventor who significantly developed electronic television technology in the 1920s, is often seen as its main creator although it has been attributed to multiple inventors. This article discusses how Farnsworth and other pioneers such as John Logie Baird shaped this amazing technology.
How was TV invented?
The process of creating a television involved several inventors and their innovations over many years. It started with early attempts to send images over long distances.
Scottish inventor John Logie Baird and his American counterpart Philo Farnsworth made substantial contributions during the early twentieth century.
John Logie Baird
In 1925, Baird showed a mechanical scanning device that worked as a television for the first time. This “televisor” used a rotating disc with holes arranged in a spiral pattern to scan images, which were then transmitted wirelessly and reconstructed on a screen.
Philo Farnsworth
But then there was Philo Farnsworth, who gave all his energy to electronic television. In 1927, he came up with the first practical all-electric picture pick-up tube, called the “image dissector.” This system by Farnsworth was an improvement on Baird’s mechanical approach as it used a cathode ray tube (CRT) to show pictures. His work laid the foundation for current television.
Other inventors
At the same time, other inventors, such as Vladimir Zworykin, a Russian-born American engineer who invented the iconoscope and kinescope, which are vital elements of electronic television development, were busy working on similar technologies.
The process of inventing the television involved several key steps
- Scanning and Transmission: Initially, experiments involved scanning an image and transforming it into electric signals that could be transmitted over a distance.
- Image Reassembly: The next step saw the conversion of these transmitted signals back into visual images on a screen.
- Electronic Innovation: Farnsworth led the way in replacing mechanical systems with electronic ones thereby facilitating cleaner, more reliable transmission of images.
Electronic television systems had been refined enough to commercialize them by the late 1930s leading to their wide adoption. These inventors’ collaborative efforts and continuous improvements transformed television into a revolutionary medium for information and entertainment.
The invention of the color-tv
The birth of colored television brought a significant change in the history of broadcasting through various countries such as Mexico. Guillermo González Camarena, a Mexican engineer and inventor, played a crucial role in developing the color TV system.
A Chromoscopic Adapter for Television Equipment, made by González Camarena in the early 1940s, allowed existing black-and-white TV sets to receive color broadcasts. In 1941, he patented it and demonstrated it publicly, thus paving the way for further improvement in color television technology.
The process involved
- Chromoscopic Adapter: This added color information to the black-and-white signal.
- Patent and Demonstration: The patenting and demonstration of González Camarena’s system proved that color television is possible.
- Commercialization: His work had an impact on future advancement in color broadcasting.
González Camarena’s contributions were important, particularly for Latin America, although NTSC colour standard also made major advancements in US. His inventions made color television more available and marked a great technological leap forward.
