Phonofilm: Difference between revisions

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Having failed to create a workable system of recording sound onto film by 1921, DeForest contacted Case to inquire about using the Case Research Lab's invention of the Thallofide ([[thallium]] oxysulfide) Cell, for use in reproducing his recorded sound. Case provided DeForest with that invention from his lab, and later provided DeForest with the AEO Light, another Case Research Lab invention, used for reading the soundtrack of a finished film. Due to DeForest's continuing misuse of these inventions, the Case Research Lab proceeded to build its own camera. That camera was used by Case and Sponable to record President Coolidge on 11 August 1924, which was one of the films shown by DeForest and claimed by him to be the product of "his" inventions.
 
Seeing that DeForest was more concerned with his own fame and recognition than he was with actually creating a workable system of sound film, and because of DeForest's continuing attempts to downplay the contributions of the Case Research Lab in the creation of Phonofilm, Case severed his ties with DeForest in the fall of 1925. On 23 July 1926, William Fox of [[Fox Film Corporation]] bought Case's patents. Fox, Sponable, and others in the ERPI consortium set the standard for projection for sound film at 24 frames per second, making it impossible for Phonofilms to be projected on new sound projectors.
 
==Producer Pat Powers attempts takeover of Phonofilm==