Chapter 1 - Chapter 1 History of Broadcast Media...

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Chapter 1 History of Broadcast Media Preconditions: SOCIAL Urbanization Rise in Literacy Rate, Etc. Mass Production Techniques Mass Media Distribution Penny Press Motion Pictures Vaudeville TECHNOLOGICAL Phonograph (Concept) Wire 1844 Telegraph 1866 Transatlantic Cable 1876 Telephone Wireless 1873 Maxwell's Theory 1888 Hertz' Confirmation 1896 Marconi's Patent 1897 Marconi's Wireless Telegraph Co. 1899 American Marconi Founded 1901 First Transatlantic Wireless Message Wireless (Cont.) 1904 Fleming's Diode Patent
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The Inventors Reginald Fessenden - tested his alternator on Christmas Eve, 1906, demonstrated that voice could be transmitted over the “ether.” Fessenden’s alternator produced a continuous wave that was needed for the transmission of voice or music. 1907 De Forest's Experiments Leading to Triode (Audion) 1916 De Forest's Experimental Transmissions Lee De Forest and the Invisible Empire De Forest’s “Audion” made it possible to amplify weak radio signals. The Audion modified the “Fleming valve” by inserting a wire grid between the plate of the tube and its cathode. This invention helped make modern electronics possible Boardrooms and Courtrooms De Forest’s audion got him into patent trouble with the Marconi Company. Claimed the Audion infringed on the Fleming Valve patent British Marconi and its American subsidiary dominated radio. Radio before World War I was primarily point-to-point communication used like the telegraph. General Electric, AT&T and Westinghouse were also interested in the radio business -- initially for telephone communications Patents for transmitters and receivers split among these companies and others What about Nathanial Stubblefield (1892) ? What about Tesla? Nikola Tesla 1894 - had version of electronic tube and performed transmissions. 1897 - had patents describing transmission experiments. 1915 - filed suit against Marconi.
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1943 - Supreme Court awarded Tesla credit for some inventions formerly credited to Marconi. Radio Goes to War During the First World War, the Navy took control of all radio operations in the U.S. Patent Pooling The Navy assumed all responsibility for patent infringement and installed radio equipment in all of its ships. By the end of the war, technology had advanced rapidly as a result of the Navy’s actions. The Birth of RCA Radio Corporation of America was formed after the war Took controlling interest of the American Marconi company Parent company was the General Electric Company Was in the business of point-to-point communication- this was before broadcasting became popular The Birth of RCA RCA entered into a cross-licensing scheme to solve the patent problems the re- emerged after the war The RCA agreement allowed GE, AT&T and Westinghouse to take advantage of each others’ discoveries GE and Westinghouse would manufacture radio equipment, RCA would sell it Patent Pools Aligned Major Corporations Into Two Groups
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Chapter 1 - Chapter 1 History of Broadcast Media...

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