Patent ID: 8429332

Claim:
A multi-channel hybrid density memory storage device which is suitable for accessing a user data, the said multi-channel hybrid density memory storage device comprising: a non-volatile memory unit, which consists of a plurality of memory groups, wherein each memory group has at least one low density memory (LDM) and at least one high density memory (HDM); a plurality of data transmission lines coupled to each memory group, respectively; and a control unit, which is coupled to the memory groups by the data transmission lines, used for accessing the user data in the LDM or HDM; wherein when the user data is to be transferred from the HDM to the LDM's, the control unit is configured to equally divide the user data before transferring the equally divided user data to the LDM's which are belonging into different memory groups; wherein when the user data is to be transferred from the LDM's to the HDM, the control unit is configured to merge the user data in the LDM's which are belonging into different memory groups before transferring the merged user data to the HDM.