Contact image sensor
US12166937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2021 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Jul 27, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0081
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A contact image sensor includes a preset scanning plane used for the surface to be scanned to map to the original copy. The contact image sensor includes: a timing circuit: for self-generating light source control signal LRDT and line scan control signal TRIG1; a lens: for collecting reflected light emitted by a light source reflected by the original copy and emitting the reflected light onto a photoelectric conversion chip for converting received optical signals into electrical signals; and a data processing unit: emitting trigger pulse TRIG according to the encoder transmitting the object to be detected, receiving and processing electrical signals output by the photoelectric conversion chip that has the same size of the photoelectric signal output, ensuring the output stability, dynamic range and sensitivity of the image sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.