Patent · US Active

Signal collecting circuit, signal collecting method and electronic device

US11475700B2 · kind B2 · utility

1Cited by
1References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 27, 2021
Grant dateOct 18, 2022
Priority date
Expiry dateApr 27, 2041

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04N25/701
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

The present disclosure provides a signal collecting circuit, a signal collecting method and an electronic device. A signal collecting circuit includes: a bias voltage wire, multiple fingerprint pixel circuits and a photocurrent collecting module. Each fingerprint pixel circuit includes a photoelectric conversion unit connected to the bias voltage wire and configured to output a photocurrent signal to the bias voltage wire when light hits the photoelectric conversion unit. A photocurrent collecting module is connected to the bias voltage wire and configured to collect the photocurrent signals output by at least part of the photoelectric conversion unit through the bias voltage wire.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.