Apparatus and method for voltage controlling used in a portable electronic device
US8294307B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 2008 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Aug 11, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2207/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for voltage controlling used in a portable electronic device includes an HDMI connector, a detector and a voltage selector. The HDMI connector is to establish a connection with an external device. The detector is to detect whether the connection is established by detecting a voltage of a hot plug detect pin of the HDMI connector and to further compare the voltage to a threshold voltage so as to generate a control signal accordingly. The voltage selector is to select one of a first voltage and a second voltage based on the control signal and to further output the selected voltage to a power pin of the HDMI connector. In the apparatus, the control signal orders the voltage selector to select the second voltage if the voltage is not lower than the threshold voltage, and to select the first voltage otherwise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.