The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 2005
Filed:
Jun. 09, 1997
Risto Olavi Orava, Helsinki, FI;
Jouni Ilari Pyyhtia, Vantaa, FI;
Tom Gunnar Schulman, Masaia, FI;
Miltiadis Evangelos Sarakinos, Geneva, CH;
Konstantinos Evangelos Spartiotis, Helsinki, FI;
Risto Olavi Orava, Helsinki, FI;
Jouni Ilari Pyyhtia, Vantaa, FI;
Tom Gunnar Schulman, Masaia, FI;
Miltiadis Evangelos Sarakinos, Geneva, CH;
Konstantinos Evangelos Spartiotis, Helsinki, FI;
Simage Oy, Espoo, FI;
Abstract
A semiconductor radiation imaging device includes an array of pixel cells having an array of pixel detectors which directly generate charge in response to incident radiation and a corresponding array of individually-addressable pixel circuits. Each pixel circuit is associated with a respective pixel detector for accumulating charge directly resulting from radiation incident on the pixel detector and includes threshold circuitry and charge accumulation circuitry. The threshold circuitry is configured to discard radiation hits on the pixel detector outside a predetermined threshold range, and the charge accumulation circuit is configured to accumulate charge directly resulting from a plurality of successive radiation hits on the respective pixel detector within the predetermined threshold range.