Abstract: A display system displaying information on a robot arm when the robot arm having a joint is moving, includes a plurality of imaging apparatuses imaging markers provided on the robot arm, a plurality of projection apparatuses projecting the information on the robot arm, and a control apparatus controlling operation of the projection apparatuses to project the information to follow the moving robot arm based on images of the markers captured by the imaging apparatuses.

Abstract: A cable terminal end detection method includes a gripping step for gripping, using a hand including a first gripping section and a second gripping section disposed to be separated on an X axis and configured to open and close in a direction along a Z axis, a cable in two places separated in a longitudinal direction with the first gripping section and the second gripping section, a moving step for, in a state in which the cable is gripped by the hand, moving the cable to the first gripping section side in a direction along the X axis relatively to the hand, and a detecting step for detecting, with a tactile sensor disposed in the second gripping section to be in contact with the cable, that the cable has slipped out from the second gripping section and detecting that a terminal end of the cable is located between the first gripping section and the second gripping section.