Lg Electronics Inc.

Young Ki Kwon

Seung Hyun Lee

In Seong Hwang

Won Seok Cho

Sung Hun Cho

A data encryption method for an IEEE 1394 serial bus network, a data encryption method for an IEEE 1394 serial bus network, comprising the steps of requesting a private encryption at a data transmission node using a predetermined encryption algorithm at a data receiving node; recognizing and confirming that the data transmission node set the private encryption requesting at the data receiving node; transmitting an encrypted data at the data transmission node when the receiving node requests a service at the data transmission node; and decoding the encrypted data using a predetermined unencrypting key at the data receiving node, for thereby transmitting an encryption algorithm and encryption data to a corresponding node when a service is requested from a receiving node with respect to a certain system by setting an encryption algorithm in the system and decoding an encrypted data transmitted from the system in accordance with an encryption algorithm and displaying the same, so that a certain user can use a service.

Method for encrypting data using IEEE 1394 serial bus network

A method for performing a protocol interfacing operation for a plurality of nodes in an IEEE1394 serial bus network. Upon initialization of an IEEE1394 serial bus due to node addition or deletion, each of the nodes formats a protocol identifier packet and sends it to the other nodes. A bus manager stores the protocol identifier packets of the nodes into a protocol map. Then, a source node sends a protocol query packet including a target node identifier to the bus manager to request the transfer of data. Upon receiving the protocol query packet from the source node, the bus manager retrieves a communication protocol from the protocol map and sends a protocol set packet including information about the retrieved communication protocol to the source node and a target node to perform the transfer of data between the source and target nodes through the communication protocol. Therefore, the data transfer can efficiently be performed with no necessity for checking protocols one by one.

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Seoul, South Korea

Young Ki Kwon