Firmware update for optical disc drive
US7480904B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2005 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Dec 23, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F8/65
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical disc drive includes a firmware memory, a buffer memory, and a system control chip. The system control chip includes a processor and a memory update controller. When the optical disc drive is under a normal mode, the memory update controller is in an idle state. The processor controls the optical disc drive to fetch an update firmware from an optical disc and store the update firmware into the buffer memory. When the optical disc drive is under a firmware update mode, the processor is in an idle state. The memory update controller fetches the update firmware from the buffer memory and stores the update firmware into the firmware memory without the processor executing an update routine code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.