1394 interface having a data input from the information source is output to the plurality of the broadcast function of the machine, particularly applicable to the connection of the home AV (AUDIO-VISUAL). The interface has the transfer function of the time, to ensure the quality of the audiovisual AV equipment reproducing sound and image data, the effect of having a good replay, strictly speaking, the the IEEE1394 card like USB, like just a common interface, rather than a video capture card. For example, we can connect to a high-speed external hard drive to the IEEE1394 card. However, because the vast majority of uses IEEE1394 card collection with DV digital video camera connected to a digital video signal, so we usually see it as capture card. 1394 card currently on the market can be divided into two categories: simple DV card with the real-time hardware DV encoding function and implemented by software compression encoding 1394 card.