Modern Hollywood

On January 22, 1947, the first commercial television station west of the Mississippi River, KTLA, began operating in Hollywood. In December of that year, the first Hollywood movie production was made for TV, The Public Prosecutor. And in the 1950s, music recording studios and offices began moving into Hollywood. Other businesses, however, continued to migrate to different parts of the Los Angeles area, primarily to Burbank. Much of the movie industry remained in Hollywood, although the district's outward appearance changed.

Source: http://en.wikipedia.org/wiki/Hollywood