Abstract: There is provided an image display apparatus that makes it possible to automatically orient a front face of a three-dimensional object represented by a three-dimensional image to a user. There are provided: a display unit that displays the three-dimensional image, by which the three-dimensional object appears to exist in a space partitioned by members configuring an outer surface, to be visually recognizable from a plurality of circumferential directions; a direction estimation section that estimates a direction in which a user exists as seen from the display unit; and a display control section that orients a front face of the three-dimensional object displayed by the display unit in the direction in which the user exists estimated by the direction estimation section.

Abstract: There is provided an image display apparatus that makes it possible to automatically orient a front face of a three-dimensional object represented by a three-dimensional image to a user. There are provided: a display unit that displays the three-dimensional image, by which the three-dimensional object appears to exist in a space partitioned by members configuring an outer surface, to be visually recognizable from a plurality of circumferential directions; a direction estimation section that estimates a direction in which a user exists as seen from the display unit; and a display control section that orients a front face of the three-dimensional object displayed by the display unit in the direction in which the user exists estimated by the direction estimation section.

Abstract: Provided is an image display apparatus that includes a display displaying a three-dimensional image such that a three-dimensional object looks as if in a space defined by a member constituting an external surface and that the three-dimensional object is visible from multiple directions around the display, a motion detector detecting a motion of the display caused by an external force, a motion calculation unit calculating a motion of the three-dimensional object caused by the motion of the display based on the motion detected by the motion detector, a display control unit changing the three-dimensional image displayed on the display based on the calculation by the motion calculation unit, and a force sense control unit causing a force sense presentation unit to present a sense of force based on the calculation by the motion calculation unit.

Abstract: An analog signal to be delayed thereby is compressed according to a monotonously increasing, convex compression function and sent to a delay circuit constituted digitally. Data of a digital value stored in a memory is read out after a constant delay time and converted into an analog signal by a D/A converter. The analog signal is expanded according to a reverse function of the compression function to restore it as an echo signal.

Abstract: This invention includes a compression circuit for compress one of an audio signal and a mixture of the audio signal and an echo signal, a delay circuit for delaying an output signal of the compression circuit by a predetermined time and an expansion circuit having a conversion rate controlled by a DC voltage generated correspondingly to a regulation of the volume controller, for expanding the output signal of the delay circuit according to a reverse conversion function to the compression conversion function to generate the echo signal.