Abstract: A method for operating a conveying system is provided. An overhead hoist transport (OHT) vehicle is provided, wherein the OHT vehicle includes a gripping member configured to grip and hold a carrier, and a receiver configured to receive a signal. The signal is transmitted to the receiver of the OHT vehicle. The OHT vehicle is moved toward the carrier, and the carrier is gripped by the gripping member of the OHT vehicle. A lifting force is determined based on a weight of a carrier, a number of workpieces in the carrier, or a vertical distance between the OHT vehicle and the carrier, and the lifting force is applied to the carrier.

Abstract: A system for a semiconductor fabrication facility comprises a transporting tool configured to move a carrier, a first manufacturing tool configured to accept the carrier facing in a first direction, a second manufacturing tool configured to accept the carrier facing in the second direction, and an orientation tool. The carrier is moved to the orientation tool by the transporting tool prior to being moved to the first manufacturing tool or the second manufacturing tool by the transporting tool. The orientation tool rotates the carrier so that the carrier is accepted by the first manufacturing tool or the second manufacturing tool. The transporting tool, the first manufacturing tool, the second manufacturing tool and the orientation tool are physically separated from each other.

Abstract: A projection system including a first projector and a plurality of second projectors is provided. The first projector has a control interface, a first transmission interface, a second transmission interface and a first image unit. The control interface is used for receiving an update message, and the first image unit performs firmware updating according to the update message. Each of the second projectors has a third transmission interface, a fourth transmission interface and a second image unit. The first transmission interface, the second transmission interface, the third transmission interfaces and the fourth transmission interfaces are connected in series to form a transmission channel. The first image unit transmits the update message to the second image units through the transmission channel, and the second image units perform firmware updating according to the update message.