Updating a memory block without status logging

• US 7,603,587 B2
• Filed: 05/26/2006
• Issued: 10/13/2009
• Est. Priority Date: 05/26/2006
• Status: Active Grant

• Current Assignee: Intel NDTM US LLC (Intel Corporation)
• Original Assignee: Intel Corporation
• Inventors: Rudelic, John
• Primary Examiner(s): Baderman; Scott
• Assistant Examiner(s): Schell; Joseph
• Application Number:
  US11/441,576
• Publication Number:
  US 20080005503A1
• Time in Patent Office: 1,236 Days
• Field of Search: 714/18, 714/751, 714/768, 714/803, 714/821, 714/824, 714/37, 714/45, 711/156, 707/202, 707/203
• US Class Current: 714/37
• CPC Class Codes: G06F 8/65 Updates security arrangements therefor G06F21/57
• CPC Class Codes: H04W 8/245 from a network towards a terminal

Abstract

A technique to update a memory block without status logging is presented. An update file includes a pre-update and a post-update information verification code (IVC) for each block to be updated. By comparing the IVCs to an IVC of a block of memory, an update status may be determined.

Claims

1. An apparatus comprising:

a memory having a first portion to store a received update file, the update file including a pre-update information verification code (IVC), a post-update IVC, and difference information; and

a state machine configured to use the IVCs to determine a status of an update to a second portion of the memory, wherein to update the portion of memory, the state machine is further configured to;

calculate a current IVC of a block of memory; and

compare the current IVC with one of pre-update and post-update IVCs.

2. The apparatus as recited in claim 1, wherein if the current IVC and the pre-update IVC are not equal and the current IVC and a post-update IVC are not equal, the block has been partially updated.

3. The apparatus as recited in claim 1, wherein the difference information is used to update the information stored in the second portion of the memory.

4. A system comprising:

an antenna to receive an update file;

a memory having a first portion to store the update file, the update file including a pre-update information verification code (IVC), a post-update IVC, and difference information; and

a state machine configured to use the IVCs to determine a status of an update to a second portion of the memory, wherein to update the portion of memory, the state machine is further configured to;

calculate a current IVC of a block of memory; and

compare the current IVC with one of said IVCs.