TECHNIQUES FOR DETECTING AND CORRECTING ERRORS IN A MEMORY DEVICE

• US 20110131471A1
• Filed: 02/14/2011
• Published: 06/02/2011
• Est. Priority Date: 03/31/2006
• Status: Abandoned Application

• Current Assignee: Guillermo Rozas
• Original Assignee: Guillermo Rozas
• Inventors: Rozas, Guillermo
• Application Number:
  US13/026,607
• Publication Number:
  US 20110131471A1
• Time in Patent Office: Days
• US Class Current: 714/763
• CPC Class Codes: G06F 11/1048 using arrangements adapted for a specific error detection or correction feature
• CPC Class Codes: G11C 2029/0411 Online error correction

Abstract

A technique for detecting and correcting errors in a memory device, in accordance with one embodiment, includes a data storage area arranged in a plurality of blocks, wherein each block contains a plurality of words. The memory device also includes an error detection/correction storage area for storing error detection/correction bytes corresponding to each word in each block and error detection words corresponding to each block.

Claims

1. A memory device comprising:

a first type of error information based on a first group of data; and

a second type of error information based on a second group of the data, wherein the second group is greater than the first group.

2. The memory device of claim 1, wherein the first group is a word.

3. The memory device of claim 2, wherein the second group is a block of words.

4. The memory device of claim 1, wherein the first type of error information comprises error detection and correction information.

5. The memory device of claim 1, wherein the second type of error information comprises error detection information.

6. The memory device of claim 1, wherein the first type of error information comprises a byte of bits.

7. The memory device of claim 6, wherein the second type of error information comprises a word of bytes.

8. A method comprising:

determining a first type of error information by using a first group of data;

determining a second type of error information by using a second group of the data, wherein the second group is greater than the first group; and

storing the first type of error information and the second type of error information in a memory.

9. The method of claim 8, wherein the first group is a word.

10. The method of claim 9, wherein the second group is a block of words.

11. The method of claim 8, wherein the first type of error information comprises error detection and correction information.

12. The method of claim 8, wherein the second type of error information comprises error detection information.

13. The method of claim 8, wherein the first type of error information comprises a byte of bits.

14. The method of claim 13, wherein the second type of error information comprises a word of bytes.

15. A method comprising:

detecting an error in data, wherein said detecting includes;

using a first type of error information that is calculated from a first group of the data, and

using a second type of error information that is calculated from a second group of the data, wherein the second group is greater than the first group; and

correcting the error by using at least one of the first type of error information and the second type of error information.

16. The method of claim 15, wherein the first group is a word.

17. The method of claim 16, wherein the second group is a block of words.

18. The method of claim 15, wherein the first type of error information comprises error detection and correction information.

19. The method of claim 15, wherein the second type of error information comprises error detection information.

20. The method of claim 15, wherein the first type of error information comprises a byte of bits, and wherein the second type of error information comprises a word of bytes.