Patent ID: 8291154
Filing Date: 2012-10-16
Classification: B41J,G06F,H04L

Abstract:
1. A memory device electrically connectable to a host circuit, comprising: a nonvolatile data memory section; a data reception section that receives, from the host circuit, data including first data to be written into the data memory section and second data generated from the first data; a determination section that determines consistency of the data received by the data reception section; and a data transmission section that transmits a result of the determination to the host circuit, wherein the determination section determines whether the first data and the second data are consistent with one another; and wherein the second data is inverted data of the first data, and during a write operation from the host circuit to the memory device, the data reception section is arranged to receive serially from the host circuit: identification data that specifies a single memory device among a plurality of memory devices; inverted identification data; write command data; inverted write command data; and a first set of first data and second data of a prescribed size; and thereafter to receive a second set of first data and second data of the prescribed size, and wherein: (i) from the time that reception of the identification data starts to the time that reception of the first set of first data and second data is completed, the data transmission section is arranged not to transmit the result of determination by the determination section to the host circuit; and the data transmission section is arranged to transmit the result of determination by the determination section to the host circuit after reception of the first set of first data and second data is completed; and (ii) for the second set of first data and second data of the prescribed size, the data transmission section is arranged to transmit the result of determination by the determination section to the host circuit after reception of the second set of first data and second data is completed.