Apparatus for recording, transmission or reproduction of sound or images; and remote controls for controlling computers and screens through the use of gestures

COMPUTER INPUT DEVICE, NAMELY, ULTRASONIC FIELD GENERATOR AND SENSORS FOR USE ON COMPUTER MONITORS OPERATED BY OBJECT MOVED IN FIELD IN FRONT OF MONITOR SCREEN, ASSOCIATED COMPUTER SOFTWARE PROGRAMS AND DEMONSTRATION PROGRAM, AND USER'S MANUAL SOLD THEREWITH