Patent ID: 9356736
Filing Date: 2016-05-31
CPC Classification: G06F,G06K,G07F,H04L

Claim Text:
1. A portable electronic device which executes a command from an external device, the portable electronic device comprising: a communication interface which transmits data and receives data with the external device; and a controller; wherein when the communication interface transmits data collectively to the external device and receives a divided-message retransmission request which requests to divide the data and to retransmit divided portions of the data from the external device, the controller divides the data into a plurality of divided portions of the data, gives an error detection code to each of the divided portions of the data, transmits each of the divided portions of the data to which the error detection code is given, to the external device by the communication interface so as to make a predetermined non-transmission period after transmission of each of the divided portions of the data, wherein the controller executes detecting an error notice showing a failure in receiving each of the divided portions of the data from the external device in the predetermined non-transmission period, and when the controller detects the error notice, the controller retransmits the divided portion of the data which the controller has transmitted just before the controller detects the error notice.