Abstract: A crane includes a boom and a hook suspended from the boom by a wire rope and transports a load in a state in which the load W is suspended from the hook, and further includes a sensor that detects the position of an obstacle, and a control device that generates a transport path CR by arranging a plurality of node points in an area containing a lifting-up point and a lifting-down point of the load and connecting the node points. The control device generates a new transport path after increasing a number of node points arranged around the obstacle when the sensor detects movement of the obstacle.

Abstract: If the requested contents are present in a cache server those contents are sent to the client sending the request but if those contents are not present in the cache server the contents request message with the cache server set as the source is sent to a server, but an address conversion circuit operates to convert the source address of the message into the address of the client that actually issued the request.