Abstract: A push button sheet and a touch panel having the push button sheet, by which different input results can be obtained, between when an operator touches the push button sheet and when the operator presses the same button sheet. The push button sheet has at least one convex reaction area configured to be bent in a predetermined press direction, a first electrode arranged on a convex surface of the reaction area, a second electrode arranged within the reaction area and below the first electrode with respect to the press direction and electrically connected to the first electrode, and a third electrode arranged within a second reaction area, wherein the second electrode and the third electrode are electrically communicated when the reaction area is bent.

Abstract: A push button sheet and a touch panel having the push button sheet, by which different input results can be obtained, between when an operator touches the push button sheet and when the operator presses the same button sheet. The push button sheet has at least one convex reaction area configured to be bent in a predetermined press direction, a first electrode arranged on a convex surface of the reaction area, a second electrode arranged within the reaction area and below the first electrode with respect to the press direction and electrically connected to the first electrode, and a third electrode arranged within a second reaction area, wherein the second electrode and the third electrode are electrically communicated when the reaction area is bent.

Abstract: An emergency stop system includes: an emergency stop switch including an operation button, a state output unit which outputs a state different in accordance with whether or not the operation button is pushed down, and an attachment unit which attaches the operation button and the state output unit to the mobile device in a detachable manner in such a manner that the state of the state output unit is positioned at a side facing a camera of the mobile device at the time of attachment to the mobile device; and an information processing unit determines in accordance with an image related to the state of the state output unit as imaged by the camera whether to output an emergency stop signal indicating an emergency stop of the machine operated by the mobile device or to output an emergency stop signal indicating no emergency stop of the machine.

Abstract: An emergency stop system includes: an emergency stop switch including an operation button, a state output unit which outputs a state different in accordance with whether or not the operation button is pushed down, and an attachment unit which attaches the operation button and the state output unit to the mobile device in a detachable manner in such a manner that the state of the state output unit is positioned at a side facing a camera of the mobile device at the time of attachment to the mobile device; and an information processing unit determines in accordance with an image related to the state of the state output unit as imaged by the camera whether to output an emergency stop signal indicating an emergency stop of the machine operated by the mobile device or to output an emergency stop signal indicating no emergency stop of the machine.