Light sensor noise suppression arrangement and method therefor
US8581891B2 · kind B2 · utility
0Cited by
4References
13Claims
0Family size
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Key dates
| Filing date | Mar 20, 2009 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Aug 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/745
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light sensor arrangement is used to detect ambient light conditions. According to an example embodiment, a light detector arrangement (e.g., 110) generates an output in response to light incident thereupon. An averaging-type circuit (e.g., 160) samples the generated output for overlapping time intervals, and combines the sampled output to form a new output that characterizes the incident light. The overlapping time intervals 5 (e.g., 221-261) are chosen such that the new output is generally flicker-free for incident light generated using one of at least two different power supply frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.