Abstract: A tactile feedback apparatus using an electromagnetic attraction for a remote control robot employs tactile data obtained during operation between a gripper attached to a robot arm of an externally controlled robot and the gripper's target so as to be transferred to an operator stationed in a central control room, thereby enabling the robot system to effectively carry out sophisticated tasks. The tactile feedback apparatus enables a successive tactile control by use of an electromagnetic attraction, and an array type fabrication, and by optimizing a production design to broaden a tactile feedback area, there may be provided a small tactile feedback device for representing a relatively improved tactility per unit, and further by aligning the tactile feedback devices in a 5.times.5 array mode on a skin of 15.times.15 mm.sup.2, there is obtained a contact location thereof.

Abstract: A display system comprises a display screen including a matrix of display elements and a permanent magnet having an array of channels formed therein. Each channel corresponds to a different display element. Each display element comprises a phosphor target, an electron source and a device for controlling flow of electrons from the source through the corresponding channel in the magnet onto the target. Addressing device comprises first and second orthogonal conductors defining a grid. Each display element is located at the intersection of a different pair of first and second conductors. Each first conductor is connected to a first control electrode of the control device of each display element in a corresponding line of display elements and each second conductor is connected to a second control electrode of the control device of each display element in a corresponding line of display elements.