US. Patent Dec. 15,1987 Sheet 2 0f 5 4,713,656 FOREGROUND MODE TERM/NA TED SUSPEND FROM FOREGROUND 32 \ \ START \ BAL'KEROUND _______ MODE FIN/SHED REQUIRE USE OF 33 31 SCREEN/KEYBOARD \ WAITING FOR FOREGROUND FOREGRUUND AL LUCA TEL7 H52 ,DORMANT
