Sony Group Corp. said Tuesday that Nobuyuki Idei, its former chairman and CEO who led the Japanese giant's push into the digital network business, has died of liver failure. He was 84.In addition to enhancing Sony's presence in the digital and communications fields, he also focused on the entertainment business, such as movies, music and game consoles, laying the foundation for its current operations.He died last Thursday at a hospital in Tokyo.Idei joined Sony in 1960, becoming president in 1995 and CEO in 1998. He served as both chairman and chief executive from 2000 to 2005.He stepped do…READ FULL ARTICLE