Non-volatile memory and method with multi-stream update tracking

A nonvolatile memory comprising:

• a memory organized into a plurality of blocks, each block being a plurality of memory units that are erasable together, each memory unit for storing a data unit;
• a controller for controlling operations of said blocks;
• first and second blocks, each for sequentially recording data units;
• priority information for allowing determination of whether a first data unit in the first block was recorded before or after a second data unit in the second block;
• a designated block designated from one of said first and second blocks for storing said priority information;
• a buffer for receiving the data from the host;
• said controller controlling recording of the received data to a next available location in either said first block or said second block respectively depending on whether or not a predetermined condition is satisfied;
• and
• wherein said priority information is being stored in said designated block whenever the received data is being recorded to the designated block.

A nonvolatile memory comprising:

• a memory organized into a plurality of blocks, each block being a plurality of memory units that are erasable together, each memory unit for storing a logical unit of data;
• first and second blocks, each for sequentially recording data from a host;
• a write pointer pointing to the next recording location of said first block;
• a designated block designated from one of said first and second blocks for storing said write pointer;
• a buffer for receiving the data from the host;
• means for recording the received data to a next available location in either said first block or said second block respectively depending on whether or not a predetermined condition is satisfied;
• and
• wherein said write pointer is being stored in said designated block whenever the received data is being recorded to the designated block.

A method of recording data from a host comprising:

• (a) providing first and second nonvolatile storages, each for sequentially recording data units;
• (b) receiving the data from the host;
• (d) recording the data and a time stamp indicating the recording time to a next available location in either the first storage or the second storage respectively depending on whether or not a predetermined condition is satisfied;
• (e) repeating (b)-(d) until there is no more data to be recorded.

A nonvolatile memory of recording data from a host comprising:

• a memory organized into a plurality of blocks, each block being a plurality of memory units that are erasable together, each memory unit for storing a logical unit of data;
• a controller for controlling operations of said blocks;
• first and second blocks, each for sequentially recording data from a host;
• and
• said controller controlling recording of the data and a time stamp indicating the recording time to either said first block or said second block respectively depending on whether or not a predetermined condition is satisfied.

A nonvolatile memory of recording data from a host comprising:

• a memory organized into a plurality of blocks, each block being a plurality of memory units that are erasable together, each memory unit for storing a logical unit of data;
• first and second blocks, each for sequentially recording data from a host;
• and
• means for recording of the data and a time stamp indicating the recording time either to a first block or a second block respectively depending on whether or not a predetermined condition is satisfied.