Optical disc device that operates with a reduced current consumption after a power-on reset, and method thereof
US8503274B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2011 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Dec 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
When power is supplied to an ODD used by being externally attached to a PC via a USB port, it is desirable not to cause an error to occur owing to occurrence of a power-on reset even when the power supplying ability of the PC is insufficient. After the ODD has been connected with the PC and started, the ODD executes an operation of large current consumption for a predetermined period of time and judges whether a power-on reset occurs or not while the operation is being executed. When the power-on reset does not occur, the ODD is set to operate on the basis of the highest specification. When the power-on reset has occurred, the specification is set lower so as to operate the ODD with reduced current consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.