Terminal connection box and plug

A connection device for connecting a plurality of external peripheral devices comprising:

• a) a connection box having an interior defined by a plurality of walls;
• b) at least one 1394 type plug;
• c) a cable;
• and
• d) an enhanced signal circuit connected to the interior of the connection box, the enhanced signal circuit having:
• i) a data receiving unit electrically connected to the cable;
• ii) a data conversion processor electrically connected to the data receiving unit;
• iii) a lock phase circuit electrically connected to the data receiving unit, the lock phase unit linking the plurality of external peripheral devices;
• iv) a process circuit electrically connected to the data conversion processor and the lock phase circuit;
• and
• v) a 1394 output/input port electrically connected between the at least one 1394 type plug and the process circuit,
• wherein, the enhanced signal circuit converts and boosts 1394 type signals coming from a first external peripheral device connected to the 1394 type plug into signals that are compatible with a second external peripheral device connected to the cable, and the enhanced signal circuit converts and boosts signals received from the second external peripheral device into signals that are compatible with the first external peripheral device, such that the first and second peripheral devices perform bi-directional intercommunications with boosted signals.