Abstract: A display apparatus for displaying a partial-screen image within a full-screen image includes a change-over switch for exchanging the video signals for the full-screen and partial-screen displays. When only the full-screen image is displayed, character information corresponding to the full-screen image can be turned on or off. When both the full-screen image and the partial-screen image are displayed, a cyclic operation can be performed under control of a controller. The cycle includes: 1) turning on the display of character information corresponding to the full-screen image, 2) turning on the display of character information corresponding to the partial-screen image, and 3) turning off the display of character information. The display apparatus is also capable of turning on the display of character information corresponding to the full-screen image when a mute of sound is turned on and turning off the display of character information when the mute of sound is subsequently turned off.