Device for processing output signals from a photo-diode
US6653616B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2002 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Jan 13, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/306
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A device for processing output signals from a photo-diode uses a comparative conversion circuit to convert an analog output signal generated from a photo-diode to a square wave digital signal; wherein, a reference circuit obtains a reference signal by capturing the analog output signal from the photo-diode, feeds it back to a feedback logic unit for timing the high or low electric potential based on the reference signal; when the low electric potential time is too long, the entire electric potential and the wave crest value time of the output signal are adjusted to make the final output square wave digital signal of the comparative conversion circuit acquire a symmetric wave correction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.