Patent · US Active

Image sensor circuit having differential signal path, differential analog-to-digital converter and differential signal offsetting means

US8094218B2 · kind B2 · utility

1Cited by

6References

12Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Patrick Vogel · Gerbrunn, DE
Steffen Lehr · Erbach, DE
Heinrich Schemmann · Villingen-Schwenningen, DE
Sabine Roth · Berlin, DE
Petrus Gijsbertus Maria Centen · Goirle, NL
Jeroen Rotte · Montréal, CA
Ruud van Ree · Breda, NL
Neil Mallory · Bad Bederkesa, DE

Key dates

Filing date	May 22, 2007
Grant date	Jan 10, 2012
Priority date	—
Expiry date	Aug 16, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04N25/673
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An image sensor circuit comprises at least one pixel cell for providing an output signal which is variable according to illumination of said pixel cell between a maximum and a minimum level, an analogue-to-digital converter for converting output signals from said pixel cell into digital data, and an offset signal source for providing an offset signal having a level between said maximum and minimum levels. The analogue-to-digital converter is fully differential and is connected to said pixel cell and to said offset signal source.

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