Patent ID: 7237074
Filing Date: 2007-06-26
Classification: G11C

Abstract:
1. A method for reading data stored in a memory system, said memory system includes a set of multi-state storage elements, said multi-state storage elements include data storage elements and tracking storage elements, said data storage elements capable of storing rotatably encoded data in a set of multiple states, said method comprising the steps of: reading said tracking storage elements, said step of reading said tracking storage elements includes categorizing at least a subset of said tracking storage elements into tracking states, said tracking states correspond to a subset of said multiple states, said subset of said multiple states consists of fewer than all states of said multiple states, said tracking states are separated from one another by one or more other states of said multiple states which are not in said subset of said multiple states; determining a rotation scheme based on said categorizing; and reading at least a subset of said data storage elements using said rotation scheme.