Abstract: A position detection system for use in association with computing applications, the system comprising: a positional element for attaining a position and comprising a first emitter for emitting a substantially continuous ultrasonic waveform decodable to fix said position, and a detector arrangement for detecting said waveform in a manner permitting fixing of said position and outputting said waveform for computation, in a manner retentive of said position fixing ability.
Abstract: A display system is constructed by a display apparatus having a display for displaying an image regarding input video data, a memory to store control information indicative of a frame rate of video data which can be displayed by the display, and a communicating unit for transmitting the control information stored in the memory. An image processing apparatus receives the control information transmitted from the display apparatus and for supplies the video data to the display apparatus in accordance with the received control information.