Granted Patent B2

US 12,189,818 · App. 17/736,378 · Granted Jan 7, 2025

Inventor: Ramanathan Muthiah (Bangalore, IN)

Assignee: Sandisk Technologies, Inc.

G06F21/6254

Abstract

Claims (58)

1. A data storage device comprising:

a memory; and

a processor configured to:

receive, from a host, a logical address and data comprising a plurality of data portions in a non-anonymized form, wherein the host transmits a non-anonymized version of the data to the data storage device for storage;

receive, from the host, a plurality of tokens, wherein each token of the plurality of tokens identifies a different set of the data portions to anonymize;

create a plurality of anonymized versions of the data per the plurality of tokens;

store the plurality of anonymized versions of the data in a respective plurality of different physical addresses in the memory;

create a one-to-many logical-to-physical address entry that maps the logical address to the plurality of different physical addresses, wherein each different physical address is indexed by a respective one of the plurality of tokens;

receive a request to read the logical address, wherein the request comprises one of the plurality of tokens;

use the one-to-many logical-to-physical address entry and the one of the plurality of tokens to determine which of the different physical addresses to read;

read the anonymized version of the data stored in the determined physical address; and

send the read anonymized version of the data in response to the request.

2. The data storage device of claim 1 , wherein the processor is further configured to:

use a mapping structure that maps tokens with data portions to determine which data portions to anonymize.

3. The data storage device of claim 1 , wherein the processor is further configured to parse the data into the plurality of data portions.

4. The data storage device of claim 1 , wherein:

the plurality of tokens comprises different storage biasing parameters; and

each of the plurality of anonymized versions of the data is stored in the memory according to its associated storage biasing parameter.

5. The data storage device of claim 4 , wherein at least one storage biasing parameter identifies an endurance group.

6. The data storage device of claim 4 , wherein at least one storage biasing parameter identifies a quality of service storage location.

7. The data storage device of claim 4 , wherein at least one storage biasing parameter identifies a hot storage location.

8. The data storage device of claim 4 , wherein at least one storage biasing parameter identifies a cold storage location.

9. The data storage device of claim 1 , wherein the plurality of tokens and the data are received from a single host.

10. The data storage device of claim 1 , wherein the plurality of tokens and the data are received from a plurality of hosts.

11. The data storage device of claim 1 , wherein the data comprises vehicle data.

12. The data storage device of claim 1 , wherein the data comprises surveillance data.

13. The data storage device of claim 1 , wherein the data comprises medical data.

14. The data storage device of claim 1 , wherein the memory comprises a three-dimensional memory.

15. A method comprising:

performing the following in a data storage device comprising a memory:

receiving, from a host, a logical address and data comprising a plurality of data portions in a non-anonymized form, wherein the host transmits a non-anonymized version of the data to the data storage device for storage;

receiving, from the host, a plurality of anonymization identifiers, wherein each anonymization identifier of the plurality of anonymization identifiers identifies a different set of the data portions to anonymize;

creating a plurality of anonymized versions of the data per the plurality of anonymization identifiers;

storing the plurality of anonymized versions of the data in a respective plurality of different physical addresses in the memory;

creating a one-to-many logical-to-physical address entry that maps the logical address to the plurality of different physical addresses, wherein each different physical address is indexed by a respective one of the plurality of anonymization identifiers;

receiving a request to read the logical address, wherein the request comprises one of the plurality of anonymization identifiers;

using the one of the plurality of anonymization identifiers to determine which of the different physical addresses to read;

reading the anonymized version of the data stored in the determined physical address;

using the one-to-many logical-to-physical address entry and the one of the plurality of anonymization identifiers to determine which of the different physical addresses to read;

reading the anonymized version of the data stored in the determined physical address; and

sending the read anonymized version of the data in response to the request.

16. The method of claim 15 , further comprising:

using a map to identify the set of fields from the anonymization identifier.

17. The method of claim 15 , wherein the data comprises vehicle data.

18. The method of claim 15 , wherein the data comprises surveillance data.

19. The method of claim 15 , wherein the data comprises medical data.

20. A data storage device comprising:

a memory; and

means for:

receiving, from a host, a logical address and data comprising a plurality of data portions in a non-anonymized form, wherein the host transmits a non-anonymized version of the data to the data storage device for storage;

receiving, from the host, a plurality of tokens, wherein each token of the plurality of tokens identifies a different set of the data portions to anonymize;

creating a plurality of anonymized versions of the data per the plurality of tokens;

storing the plurality of anonymized versions of the data in a respective plurality of different physical addresses in the memory;

creating a one-to-many logical-to-physical address entry that maps the logical address to the plurality of different physical addresses, wherein each different physical address is indexed by a respective one of the plurality of tokens;

receiving a request to read the logical address, wherein the request comprises one of the plurality of tokens;

using the one-to-many logical-to-physical address entry and the one of the plurality of tokens to determine which of the different physical addresses to read;

reading the anonymized version of the data stored in the determined physical address; and

sending the read anonymized version of the data in response to the request.

Assignments (8)

Continuity (1)

References Cited (19)