Patent ID: 7009965

Claim:
A Local Area Network (LAN) interfacing apparatus, comprising: an Ethernet controller, which performs a control operation for LAN interfacing; a codec, which is coupled to the Ethernet controller and which codes and decodes transmission/reception data; a transceiver, which is coupled to the codec and which transmits/receives data and detects data collisions on a LAN; and a retransmission control circuit, which is coupled between the Ethernet controller and the codec, to retransmit data after a prescribed delay period when a prescribed number of collisions occur on the LAN, wherein the retransmission control circuit comprises: a collision control unit to detect a collision and output a collision control signal; a first switch to switch a transmission data path output from the Ethernet controller between a first path and a second path based on the collision control signal; a buffer on the second path to store data; a second switch coupled to the first switch along the first path and coupled to the buffer along the second path, the second switch to pass the data to the codec.