Electronic device
US9923411B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 28, 2016 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Sep 1, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/35
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic device includes: a light detection circuit having a first light sensor and a second light sensor each generating a photocurrent by photoelectric conversion, a resistive element which allows a difference between the photocurrents generated by the first light sensor and the second light sensor to flow, and a voltage detection circuit which detects a voltage generated by the flow of the differential photocurrent through the resistive element, said electronic device being controlled in operation by an output signal of the light detection circuit; a storing unit charged each time the electronic device is operated; and a rectifying element provided between the storing unit and the resistive element. A current with which the storing unit is charged is made to flow to the resistive element through the rectifying element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.