METHOD FOR FORMATTING AND ROUTING DATA BETWEEN EXTERNAL NETWORK AND INTERNAL NETWORK AND COMPUTER.READABLE RECORDING MEDIUM STORING ONE OR PLURAL INSTRUCTION SEQUENCES FOR EXECUTING THE METHOD

摘要

PROBLEM TO BE SOLVED: To format and route data between an external network and an internal network by providing a step, etc., for transmitting a part of data information of a second digital format to a specific node via a selected transmission mode. SOLUTION: A home gateway receives a data packet (S2304) to separate information in the data packet (S2308). Next, the data packet is converted to a second digital format from a first digital format (S2312). Next, a test for deciding whether the data packet includes a real time or non-real time data is executed (S2316). In addition, an address mapping table is read to mutually refer to address information from the address mapping table (S2328). Then, a simultaneous or asynchronous data packet is transmitted through a selected IEEE 1394 channel or address.