Abstract: Audio spatial effects are provided using ultrasonic speakers. To better reproduce the audio effects, ultrasound is used to map a room in which the speakers are disposed and the direction of emitted ultrasound from the speakers established using the map.

Abstract: Audio spatial effects are provided using a gimbal-mounted ultrasonic speaker, with the azimuth angle and, if desired, elevation angle of a gimbal assembly on which one or more ultrasonic speakers are mounted being established in response to a control signal from, e.g., a game, console or video player.

Abstract: The present technology enables a user wearing a head-mounted display having a display section provided in front of the eyes of the user to directly check a state in front of the user. A head-mounted display includes: a display section; a casing supporting the display section in front of eyes of a user; and an optical system supported by the casing, the optical system allowing the user to view an image of an object disposed in a rear of the display section as viewed from the user.

Abstract: A teletext signal processing apparatus displays a teletext signal on a display screen at a predetermined aspect ratio. The teletext signal is stored in a memory and is written to and read from the memory at variable speeds. A control circuit commands the memory to operate and adjusts the reading speed with respect to the writing speed, so as to display the teletext signal at the specified aspect ratio.

Abstract: An additive video information inserting device includes a MUSE-NTSC converter, and an additive video information encoder for receiving an output video signal of the MUSE-NTSC converter and inserting into the video signal an additive video information indicating a frame mode for the video signal. The additive video information is so set as to correspond to a frame mode in a conversion operation of the MUSE-NTSC converter. The additive video information is inserted into a predetermined position in a vertical blanking period of the video signal.

Abstract: An apparatus for processing video signals which is adapted to a function for superimposing a video signal different from a video signal which is separated into a luminance signal and chromatic signal on the video signal is disclosed. The video signal processing circuit includes a first input terminal for inputting the video signal which is separated into the luminance signal and chromatic signal, a second input terminal to which the video signal is inputted as a composite signal, and a third input terminal to which an image signal different from the video signal is inputted, and a control circuit for switching the input signal from the third input terminal so as to superimpose the input signal from the third input terminal on the input signal from the second input terminal.