IP Library Granted Patent US 8,392,622
Granted Patent B2
US 8,392,622 · App. 12/847,338 · Granted Mar 5, 2013

Management of internal operations by a storage device

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,392,622
App. No.
12/847,338
Granted
Mar 5, 2013
Kind
B2
Abstract

A method of handling internal operations of a storage device includes in response to information derived from one or more commands received from a host device when the storage device is coupled to the host device, determining whether a sequence of commands is in one of an active state, and a first transition state, where in the first transition state the sequence of commands is transitioning from an inactive state to the active state. The method includes, while the sequence of commands is in the active state or in the first transition state, refraining from executing any operation of a first set of internal memory management operations, each of the first set of internal memory management operations being an extra-sequence operation.

Claims (89)

1. A method comprising:

at a storage device, while the storage device is operatively coupled to a host device, performing:

in response to information derived from one or more commands received from the host device, determining whether a sequence of commands is in one of an active state and a first transition state based at least in part on whether the information derived from the received one or more commands satisfies a beginning-of-sequence condition, wherein the received one or more commands include one of a data-read request and a data-write request, and wherein in the first transition state the sequence of commands is transitioning from an inactive state to the active state; and

while the sequence of commands is in the active state or is in the first transition state, refraining from executing any internal memory management operation of a first type while permitting execution of at least one internal memory management operation of a second type.

2. The method of claim 1 , wherein the first type of internal memory management operation is an extra-sequence operation that is disabled from being concurrently executed with a particular integral sequence of commands and wherein the second type of internal memory management operation is an intra-sequence operation that is permitted to be concurrently executed with the particular integral sequence of commands.

3. The method of claim 2 , further comprising when the sequence of commands is in the inactive state or in a second transition state, wherein in the second transition state the sequence of commands is transitioning from the active state to the inactive state, permitting execution of an operation of the first type and refraining from executing any operation of the second type.

4. The method of claim 3 , further comprising determining whether the sequence of commands is in the second transition state by determining whether the information derived from the received one or more commands satisfies an end-of-sequence condition.

5. The method of claim 1 , wherein the beginning-of-sequence condition includes a condition that an average read rate associated with reading moving picture experts group audio layer 3 (MP3) data by the host device matches a predetermined read rate.

6. The method of claim 1 , wherein the sequence of commands is associated with playing back of moving picture experts group audio layer 3 (MP3) content.

7. The method of claim 1 , wherein the sequence of commands is associated with data synchronization.

8. The method of claim 1 , wherein the sequence of commands is associated with a boot command.

9. The method of claim 1 , wherein at least one internal memory management operation of the first type includes at least one of:

a flash memory management operation;

encryption/decryption of outgoing/incoming data;

compression/decompression of outgoing/incoming data;

an anti-virus operation;

a defragmentation operation;

ruggedization;

backing up data;

changing data format;

garbage collection;

employing an error correction mechanism;

caching data into a fast flash storage area;

flushing cached data;

low power mode operation; and

static wear leveling.

10. The method of claim 1 , wherein at least one the internal memory management operation of the second type includes at least one of:

a flash memory management operation;

encryption/decryption of outgoing/incoming data;

compression/decompression of outgoing/incoming data;

an anti-virus operation;

a defragmentation operation;

ruggedization;

backing up data;

changing data format;

garbage collection;

employing an error correction mechanism;

caching data into a fast flash storage area;

flushing cached data;

a low-power mode operation; and

static wear leveling.

11. A storage device comprising:

a mass storage area to store:

a sequence of commands, wherein the sequence of commands is in one of an active state, an inactive state, a first transition state wherein the sequence of commands is transitioning from the inactive state to the active state, and a second transition state wherein the sequence of commands is transitioning from the active state to the inactive state;

a first set of internal memory management operations, each of the first set of internal memory management operations of a first type; and

a second set of internal memory management operations, each of the second set of internal memory management operations of a second type; and

a controller configured to:

receive one or more commands from a host device when the storage device is operationally coupled to the host device;

determine, based on information derived from the received one or more commands, when the sequence of commands is in the active state or in the first transition state; and

responsive to the sequence of commands being in the active state or in the first transition state, refrain from executing a first operation of the first set of internal memory management operations and enable execution of a second operation of the second set of internal memory management operations.

12. The storage device of claim 11 , wherein the controller is further configured to:

determine when the sequence of commands is in the inactive state or in the second transition state based on the information derived from the received one or more commands; and

responsive to the sequence of commands being in the inactive state or in the second transition state, permit execution of an operation of the first set of internal memory management operations.

13. The storage device of claim 11 , wherein the first operation of the first set of internal memory management operations includes at least one of:

a flash memory management operation;

encryption/decryption of outgoing/incoming data;

compression/decompression of outgoing/incoming data;

an anti-virus operation;

a defragmentation operation;

ruggedization;

backing up data;

changing data format;

garbage collection;

employing an error correction mechanism;

caching data into a fast flash storage area;

flushing cached data;

using low power mode; and

static wear leveling.

14. The storage device of claim 11 , wherein the second operation of the second set of internal memory management operations includes at least one of:

a flash memory management operation;

encryption/decryption of outgoing/incoming data;

compression/decompression of outgoing/incoming data;

an anti-virus operation;

a defragmentation operation;

ruggedization;

backing up data;

changing data format;

garbage collection;

employing an error correction mechanism;

caching data into a fast flash storage area;

flushing cached data;

using low power mode; and

static wear leveling.

15. The storage device of claim 11 , wherein the first type of internal memory management operation is an extra-sequence operation that is disabled from being concurrently executed with a particular integral sequence of commands and wherein the second type of internal memory management operation is an intra-sequence operation that is permitted to be concurrently executed with the particular integral sequence of commands.

16. The storage device of claim 11 , wherein the controller is further configured to determine that the sequence of commands is in the first transition state or in the second transition state by determining whether the information derived from the received one or more commands satisfies one of a beginning-of-sequence condition and an end-of-sequence condition, respectively.

17. The storage device of claim 16 , wherein the beginning-of-sequence condition is that a particular number of data bursts is received by the storage device within a particular period of time.

18. The storage device of claim 16 , wherein the controller is further configured to determine whether the information derived from the received one or more commands satisfies a particular end-of-sequence condition that a time delay between reception by the storage device of two consecutive data bursts exceeds a particular time period.

19. The storage device of claim 16 , wherein the controller is further configured to determine whether the information derived from the received one or more commands satisfies a particular beginning-of-sequence condition by performing a comparison to a beginning-of-sequence threshold stored in a parameter table within the storage device.

20. The storage device of claim 16 , wherein the controller is further configured to determine whether the information derived from the received one or more commands satisfies a particular end-of-sequence condition by performing a comparison to an end-of-sequence threshold stored in a parameter table within the storage device.

Assignments (3)
CHANGE OF NAME Recorded Jun 10, 2025
From: WESTERN DIGITAL ISRAEL LTD.
To: SANDISK ISRAEL LTD.
Reel/Frame 071587/0836 →
CHANGE OF NAME Recorded Aug 21, 2020
From: SANDISK IL LTD
To: WESTERN DIGITAL ISRAEL LTD
Reel/Frame 053574/0513 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 30, 2010
From: MOSEK, AMIR; BARAM, ELAD
To: SANDISK IL LTD.
Reel/Frame 024768/0871 →