Abstract: Disclosed is an information processing apparatus which performs control to display images. The information processing apparatus includes a display unit which has a display surface to display the images, at least four speakers which are disposed in the periphery of the display surface on the display unit, a rotation detecting unit which detects a 90 degree rotation of the display unit on a predetermined position of the display unit, and a switching unit which switches left and right outputs of a pair of speakers at diagonal positions of the four speakers according to the 90 degree rotation of the display unit detected by the rotation detecting unit.

Abstract: In setting a plurality of types of image quality in a single screen, an arrangement is made to facilitate the setting of a range in which each image quality is set. Upon generating a video signal to displayed on a predetermined display unit, the process is performed for inserting predetermined marker signals in the video signal at positions corresponding to at least two corners on the diagonal in a predetermined range of an image to be displayed. At the same time, the positions where the marker signals are inserted are moved in accordance with a predetermined operation input thereby to move the range set in the image to be displayed.

Abstract: A monitor interface circuit for adapting a color display monitor to a selected one of various types of computers which generate different types of color display data receives the display data and one of several horizontal scanning frequency signals from the computer and mixes the display data as a function of the one horizontal scanning frequency to thereby generate a proper display signal for the monitor.