Firmware update system and information apparatus, and program
US8726262B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 18, 2010 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Sep 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F8/658
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a firmware update process capable of realizing both recovery from an interruption of update and saving of a capacity of nonvolatile memory used for backup and storing difference data. Thus, intermediate data is included for always holding a status of firmware in rewriting in addition to the new and old firmware. In a case of updating all blocks configuring the firmware in an arbitrary order, the process successively compares blocks of the intermediate data and new firmware with each other; calculates an address of data for recovery from an interruption of update and a backup capacity required therefor; extracts difference data to be distributed, calculates a capacity thereof and creates an update procedure; and derives a processing order whose total of the backup capacity and the difference data capacity is the minimum (see FIG. 2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.