Methods and apparatuses and systems for inserting advertisement segments into trick content. A signal from a signal source is received at the antenna. By providing logic gates on each SRAM device, the testing can be accelerated by writing to multiple array blocks at the same time, rather than in series. Supply paths for hydraulic oil discharged from the sub-pump 1103 are automatically switched in accordance with the discharge performance of the main pump 1102. In order to supply the controller with electrical power even when the safety equipment is active, the electrical load is connected between the power supply connector and the safety equipment.