Television receiver and tuning control method including a program-scanning mode

摘要: When a program-scanning is executed, the scanning picture displayed such that contents of image can be reliably recognized while an program has been so far on screen. A television receiver function to display sub-picture smaller than main picture. enters mode, broadcasting or source whose whole screen as (41) (42). Image plurality programs which result from changing tuning state in tuner are sequentially (41), thereby executing program-scanning.