H04N 25/30

Definition

(Für diese Definition ist die deutsche Übersetzung noch nicht abgeschlossen)

Electronic circuitry of X-ray imaging detectors that directly or indirectly detect incident X-ray photons, including:

• current integrating detectors (CID) or energy integrating detectors (EID);
• photon counting detectors (PCD). Some X-ray PCDs rely on continuous time current monitoring and pulse counting implementation of photon counting. Each pixel typically contains a pulse shaping circuit along with a thresholding system connected to a counter;
• details of generating control signals based on data from the image sensor, like irradiation start/stop detection based on dummy readouts or signals from specific pixels;
• operation and control of different sensor modes, like entering and control in sleep mode.

Beziehungen zu anderen Klassifikationsstellen

Issues with focus on measurement of X-radiation, on a measurement principle or its technological implementation or a dedicated measurement related circuit design should be classified in G01T 1/00.

When the imaging X-ray sensor is described with details related to systems for measuring of X-ray radiation with semiconductor detectors, classification should also be made in G01T 1/00. This is especially the case if details of circuitry for detecting, measuring or adapting the detected signal in order to obtain a correct signal are described, e.g. corrections for pile-up, for trapped charges, for dead-time, to determine energy or spatial corrections.

Querverweise

Nichteinschränkende Querverweise in anwendungsorientierte Klassifikationsstellen

Informative Querverweise

Spezielle Klassifizierungsregeln

In many cases it is necessary to add a symbol for an identified function or circuitry design covered in group H04N 25/00.