High Quality Content by WIKIPEDIA articles! Historically the term high-definition television was first used to refer to television standards developed in the 1930s to replace early experimental systems with as few as 12 lines. Not long afterwards John Logie Baird, Philo T. Farnsworth and Vladimir Zworykin had each developed competing TV systems, but resolution was not the issue that separated their substantially different technologies, it was patent interference lawsuits and deployment issues given the tumultuous financial climate of the late '20s and '30s.

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