ABSTRACT
By the early 1930s, Zworykin had been granted a number of patents that improved the electronic system, but he could not get his superiors at Westinghouse to pay much attention to his work. But RCA managers were interested and recruited Zworykin to work for them. RCA was also eyeing Farnsworth’s work and tried to recruit him as well, but Farnsworth instead joined the Philco company and moved to Philadelphia. Farnsworth’s time at Philco lasted only a few years, and he eventually returned to the laboratory in Los Angeles. In the meantime, Zworykin and Farnsworth took several patent battles to the courtroom. Although he gained some smaller victories, Zworykin
lost out to Farnsworth when RCA agreed to pay to license Farnsworth’s patents for a workable electronic scanning system. But Zworykin was still researching television. He developed the iconoscope, a cathode ray that substantially improved picture brightness.
