Patent ID: 9667387
Date: 2017-05-30
CPC Classifications: G06F,G06K,H03M,H04L

Claim:
1. A portable electronic device configured to execute a command from an external device comprising: an interface configured to communicate with the external device; and a controller configured to: receive a first command to request data through the interface; transmit a first response including the data through the interface; receive a second command which is a retransmission request of the data through the interface; create a detailed redundancy check code including a redundancy check code of each of divided blocks formed by dividing the data into blocks each possessing predetermined lengths when receiving the second command; transmit a second response including the detailed redundancy check code through the interface; receive a third command to request an erroneous divided block of the data through the interface; and transmit a third response including a divided block corresponding to the erroneous divided block through the interface.