Patent · US Active

Apparatus and method for data acquisition using an imaging apparatus

US8772726B2 · kind B2 · utility

4Cited by

6References

20Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Christoph Herrmann · Aachen, DE
Michael Overdick · Eschweiler, DE

Key dates

Filing date	Feb 9, 2010
Grant date	Jul 8, 2014
Priority date	—
Expiry date	May 10, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01T1/20182
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A detector tile (116) of an imaging detector array (112) includes a scintillator array (202), a photosensor array (204), which includes a plurality of photosensitive pixels, optically coupled to the scintillator array (202), and a current-to-frequency (I/F) converter (302). The I/F converter (302) includes an integrator (304) that integrates charge output by a photosensitive pixel during an integration period and generates a signal indicative thereof and a comparator (310) that generates a pulse when the generated signal satisfies predetermined criteria during the integration period. A reset device (316) resets the integrator (304) in response to the comparator (310) generating a pulse. Circuitry (320, 324) samples the generated signal at a beginning of the integration period and/or at an end of the integration period and generates quantized digital data indicative thereof. Logic (322) estimates the charge at the input of the integrator (304) based on the generated digital data.

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