System, method and memory device providing data scrambling compatible with on-chip copy operation

A method for storing information in a non-volatile memory, said method comprising:

• determining a starting key based upon a seed key and a logical page address associated with a group of data;
• randomizing the group of data using a deterministic sequence of keys corresponding to the starting key;
• storing the randomized group of data into a physical page of the non-volatile memory;
• and
• storing, into the physical page of the non-volatile memory, additional information from which the starting key may be determined without knowledge of the logical page address, wherein the additional information comprises a mapped page offset code having a 1:1 correspondence with a page offset value.

An apparatus comprising:

• a non-volatile memory;
• and
• a memory controller configured to:
• determine a starting key based upon a seed key and a logical page address associated with a group of data;
• randomize the group of data using a deterministic sequence of keys corresponding to the starting key;
• store the randomized group of data into a physical page of the non-volatile memory;
• and
• store, into the physical page of the non-volatile memory, additional information from which the starting key may be determined without knowledge of the logical page address, wherein the additional information is stored as randomized information using the deterministic sequence of keys corresponding to the starting key.

An apparatus comprising:

• a non-volatile memory;
• and
• a memory controller configured to:
• determine a starting key based upon a seed key and a logical page address associated with a group of data;
• randomize the group of data using a deterministic sequence of keys corresponding to the starting key;
• store the randomized group of data into a physical page of the non-volatile memory;
• and
• store, into the physical page of the non-volatile memory, additional information from which the starting key may be determined without knowledge of the logical page address, wherein the additional information comprises a mapped page offset code having a 1:1 correspondence with a page offset value.

A method for storing information in a non-volatile memory, said method comprising:

• determining a starting key based upon a seed key and a logical page address associated with a group of data;
• randomizing the group of data using a deterministic sequence of keys corresponding to the starting key;
• and
• storing the randomized group of data into a physical page of the non-volatile memory;
• wherein the deterministic sequence of keys comprises a number M of separate scrambling keys, each comprising M-bits, wherein each respective scrambling key N (KeyN) corresponds to an N-bit circular rotation of a predetermined seed key (Key0);
• wherein the randomizing comprises a bit-by-bit XOR operation using the deterministic sequence of M-bit scrambling keys;
• wherein each successive scrambling key in the deterministic sequence is a bit-wise rotation of the seed key by a calculated number of bits;
• and
• wherein the calculated number of bits for the successive key depends on the current key and also depends on the page offset value and the D-word offset value of the corresponding successive word.

An apparatus comprising:

• a non-volatile memory;
• and
• a memory controller configured to:
• determine a starting key based upon a seed key and a logical page address associated with a group of data;
• randomize the group of data using a deterministic sequence of keys corresponding to the starting key;
• and
• store the randomized group of data into a physical page of the non-volatile memory;
• wherein the deterministic sequence of keys comprises a number M of separate scrambling keys, each comprising M-bits, wherein each respective scrambling key N (KeyN) corresponds to an N-bit circular rotation of a predetermined seed key (Key0);
• wherein the randomizing comprises a bit-by-bit XOR operation using the deterministic sequence of M-bit scrambling keys;
• wherein each successive scrambling key in the deterministic sequence is a bit-wise rotation of the seed key by a calculated number of bits;
• and
• wherein the calculated number of bits for the successive key depends on the current key and also depends on the page offset value and the D-word offset value of the corresponding successive word.

A method for storing information in a non-volatile memory, said method comprising:

• determining a starting key based upon a seed key and a logical page address associated with a group of data;
• randomizing the group of data using a deterministic sequence of keys corresponding to the starting key;
• storing the randomized group of data into a physical page of the non-volatile memory;
• and
• storing, into more than one location within the physical page of the non-volatile memory, additional information from which the starting key may be determined without knowledge of the logical page address.