Abstract: Disclosed herein is an omnidirectional distance measurement system which transmits and receives ultrasound waves using as many as four transmitting-receiving transducers having specially shaped beamwidths. Through the use of four such ultrasonic transducers, the system may be set up to obtain any beamwidth from 5.degree. up to 360.degree. in both the horizontal and vertical planes. In the preferred embodiment, the present invention is able to detect the distance and direction to up to four objects in a prescribed work area at any one time and may also detect the speed of any one of the objects if desired.

Abstract: The present invention relates to an improved voice control system which is designed to be adaptable to existing computers so that the existing computers may be operated through the use of voice commands. In the preferred embodiment, the present invention is connected into the existing keyboard control means and the computer itself with the system including a priority switch controlled by software giving the keyboard priority over voice entries so that the keyboard may still be used even with the present invention connected into the circuit. In the preferred embodiment, voice commands are utilized so that the existing hardware with existing software incorporated therewith may be effectively operated in a foolproof manner. The present invention uses existing voice recognition chip technology and existing speech synthesizer chip technology in a new and unique way.