Reverse Reading In Non-Volatile Memory With Compensation For Coupling

A method of reading in a non-volatile memory system, comprising:

• receiving a request for data from a set of non-volatile storage elements in communication with a set of word lines, said set of non-volatile storage elements includes a first subset of non-volatile storage elements in communication with a first subset of said set of word lines and a second subset of non-volatile storage elements in communication with a second subset of said set of word lines, said first subset of non-volatile storage elements is programmed before said second subset of non-volatile storage elements;
• reading said first subset of non-volatile storage elements in a direction opposite to that in which said first subset of word lines was programmed, said reading includes:
• reading non-volatile storage elements of a first word line to be programmed for said second subset of storage elements, and
• reading non-volatile storage elements of a last word line to be programmed for said first subset of non-volatile storage elements using one or more compensations based on reading said non-volatile storage elements of said first word line of said second subset or word lines, and
• reading non-volatile storage elements of each remaining word line of said first subset of word lines using one or more compensations based on a previously read word line of said first subset of word lines that is adjacent to said each remaining word line in a direction of said last word line of said first subset of word lines,
• buffering data from said first subset of non-volatile storage elements;
• providing data read from said first subset of non-volatile storage elements to an output of said memory system;
• reading said second subset of non-volatile storage elements after beginning to provide said data from said first subset of non-volatile storage elements, said reading said second subset of non-volatile storage elements is performed in a direction opposite to that in which said second subset of word lines was programmed;
• buffering data from said second subset of non-volatile storage elements;
• and
• providing data read from said second subset of non-volatile storage elements to an output of said memory system.

A method of operating non-volatile storage, comprising:

• receiving a request for data stored in a set of non-volatile storage elements coupled to a set of word lines, said data is programmed to said set of non-volatile storage elements beginning with non-volatile storage elements coupled to a first word line of said set of word lines and ending with non-volatile storage elements coupled to a second word line of said set of word lines, said set of word lines including a plurality of word lines between said first word line and said second word line;
• in response to said request, reading said set of non-volatile storage elements beginning with non-volatile storage elements coupled to said second word line and ending with non-volatile storage elements coupled to said first word line, said reading includes applying one or more compensations when reading non-volatile storage elements coupled to a selected word line based on reading non-volatile storage elements coupled to a word line adjacent to said selected word line in a direction of said second word line;
• and
• reporting data from said non-volatile storage elements coupled to said set of word lines to a host in a sequence beginning with data from non-volatile storage elements coupled to said first word line and ending with data from non-volatile storage elements coupled to said second word line.

A method of operating non-volatile storage, comprising:

• receiving data having a first order from a host;
• programming said data in said first order to a set of non-volatile storage elements coupled to a set of word lines beginning with non-volatile storage elements coupled to a first word line and ending with non-volatile storage elements coupled to a second word line, said set of word lines including a plurality of word lines between said first word line and said second word line;
• and
• reading said set of non-volatile storage elements beginning with non-volatile storage elements coupled to said second word line and ending with non-volatile storage elements coupled to said first word line, said reading includes applying one or more compensations when reading non-volatile storage elements of a selected word line based on reading non-volatile storage elements of a word line adjacent to said selected word line in a direction of said second word line.