Sensor matrix

US6894283B1 · kind B1 · utility

Assignee

• KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

• Falko Busse · Aachen, DE
• Michael Overdick · Eschweiler, DE
• Walter Rutten · Linnich, DE
• Martin J. Powell · Horley, GB

Key dates

• Filing date: May 17, 2000
• Grant date: May 17, 2005
• Expiry date: May 17, 2020

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N25/59
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

The invention relates to an arrangement with light-sensitive or X-ray-sensitive sensors which are arranged in rows and columns of a matrix and generate charges in dependence on the amount of incident radiation, each sensor including a photosensor element with an intrinsic storage capacitor and/or a storage capacitor connected parallel to its terminals, and also a respective transistor; it also includes at least one switching line for each row of sensors via which the transistors can be activated so that the charges of the relevant activated sensors S can be read out simultaneously via read-out lines 8 in order to ensure that, in conformity with the relevant mode of operation of the arrangement, the switching noise caused by the reading out of the sensors is reduced and/or a higher image repeat rate or more stable operating conditions for the photosensor element, also in the case of large signals, as well as an increase of the dynamic range of the photosensor element become possible in that each sensor S includes a further transistor 5 which is connected directly to the photosensor element 1 and can be activated via at least one control line, both transistors 3, 5 of each sensor S b…