Monitoring camera and operation method thereof
US8811810B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 2012 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Feb 3, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/75
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A monitoring camera and an operation method thereof are provided. The monitoring camera includes a light sensor, a voltage comparing unit and a reference voltage generating unit. The light sensor senses an environment brightness of the monitoring camera and generates an induced current accordingly. The voltage comparing unit generates a sensing voltage according to the induced current and compares the sensing voltage and a reference voltage to obtain a first comparison result, so that the monitoring camera can determine whether to perform at least one of a plurality of mode switching operations according to the first comparison result. The reference voltage generating unit outputs the first reference voltage and determines whether to reduce the first reference voltage according to the first comparison result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.