In the 1920s, several inventors had given some thought to the means, based on the use of cathode rays, which would allow an all-electronic television system to be implemented. Pre-eminent among them were V.K. Zworykin and P.T. Farnsworth, both of the USA. Their early schemes were to be much developed and were to be the only viable all-electronic television schemes, of those put forward in the 1920s, which were imple mented in the 1930s .

Inspec keywords: television equipment; cathode rays; telecommunication industry

Other keywords: all-electronic television system; Baird television company; cathode ray; Marconi-EMI television company ltd; preEMI television history; HMV television apparatus

Subjects: Television and video equipment, systems and applications