Patent ID: 9411537
Filing Date: 2016-08-09
CPC Classification: G06F

Claim Text:
1. A method of operating an embedded multimedia card (eMMC), the method comprising: determining whether a vendor mode is to be entered by parsing a command argument of a command received from a host; receiving vendor mode attribute information for the vendor mode, based on a result of determining whether the vendor mode is to be entered; and performing a vendor mode operation in the vendor mode based on the vendor mode attribute information, wherein the determining of whether the vendor mode is to be entered comprises determining whether the command argument is a valid value by checking whether the command argument is outside a range of valid addresses of a memory cell array of the eMMC; determining whether a part of the command argument corresponding to a specific address is equal to a value indicating entering the vendor mode, responsive to determination that the command argument is an invalid value outside the range of the valid addresses; generating vendor mode entering information, responsive to determination that the part of the command argument corresponding to the specific address is equal to the value indicating entering the vendor mode; and generating error information, responsive to determination that the part of the command argument corresponding to the specific address is not equal to the value indicating entering the vendor mode.