Mr. Kurt Eberhardt Profile

Kurt Eberhardt

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Publications (10)

Proceedings Article | 18 April 2006 Paper

Image sensor for security applications with on-chip data authentication

P. Stifter, K. Eberhardt, A. Erni, K. Hofmann

Proceedings Volume 6241, 624109 (2006) https://doi.org/10.1117/12.665195

KEYWORDS: Cameras, Computer security, Sensors, Imaging systems, Image sensors, Network security, Video surveillance, Video, Biometrics, Data transmission

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Proceedings Article | 27 October 2005 Paper

Security SVGA image sensor with on-chip video data authentication and cryptographic circuit

P. Stifter, K. Eberhardt, A. Erni, K. Hofmann

Proceedings Volume 5986, 598608 (2005) https://doi.org/10.1117/12.629455

KEYWORDS: Sensors, Analog electronics, Computer security, Video surveillance, Video, Imaging systems, Image sensors, Network security, Optical sensors, Digital imaging

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Proceedings Article | 30 August 2004 Paper

Third-generation focal plane array IR detection modules and applications

Wolfgang Cabanski, Kurt Eberhardt, Werner Rode, Joachim Wendler, Johann Ziegler, Joachim Fleissner, Frank Fuchs, Robert Rehm, Johannes Schmitz, Harald Schneider, Martin Walther

Proceedings Volume 5406, (2004) https://doi.org/10.1117/12.542186

KEYWORDS: Stereolithography, Quantum well infrared photodetectors, Sensors, Mid-IR, Long wavelength infrared, Staring arrays, Superlattices, Readout integrated circuits, Quantum efficiency, Infrared detectors

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The 3rd generation of infrared (IR) detection modules is expected to provide advanced features like higher resolution 1024x1024 or 1280x720 pixels and/or new functionalities like multicolor or multi band capability, higher frame rates and better thermal resolution. This paper is intended to present the current status at AIM on the Mercury Cadmium Telluride (MCT), quantum well (QWIP) and antimonide superlattices (SL) detection modules for ground and airborne applications in the high performance range. For high resolution a 1280x720 MCT device in the 3-5μm range (MWIR) is presently under development. For spectral selective detection, a QWIP detector combining MWIR and 8-10μm (LWIR) detection in each pixel has been developed in a 384x288x2 format with 40 μm pitch, NETD < 35mK @ F/2, 6,8 ms for both peak wavelengths (4.8 μm and 8.0 μm). The device provides synchronous integration of both bands for temporal and spatial coincidence of the events observed. QWIP dual band or dual color detectors provide good resolution as long as integration times in the order of 5-10ms can be tolerated. This is acceptable for all applications where no fast motions of the platform or the targets are to be expected. For rapidly changing scenes - like e.g. in case of missile warning applications for airborne platforms - a material system with higher quantum efficiency is required to limit integration times to typically 1ms. For this case, several companies work on molecular beam epitaxy (MBE) of MCT to have access to double or multi layer structures. AIM and IAF selected antimonide based type II superlattices (SL) for such kind of applications. The SL technology provides -- similar to QWIP's -- an accurate engineering of sensitive layers by MBE with very good homogeneity and yield. While promising results on single SL pixels have been reported since many years, so far no SL based detection module could be realized. Just recently, IAF and AIM managed to realize first most promising SL based detectors. Fully integrated IDCAs with a MWIR SL device with 256 x 256 pixels in 40 μm pitch have been integrated and tested. The modules exhibit excellent thermal resolution of NETD > 12 mk @ F/2 and 5 ms. The next step will now be to stabilize the technology and to start the development of a dual color MWIR device based on SL technology and the existing 384 x 288 read out circuit (ROIC) used in the dual band QWIP device.

Proceedings Article | 15 December 2000 Paper

New MCT focal plane array IR detection modules and digital signal processing technologies at AIM

Wolfgang Cabanski, Rainer Breiter, Karl-Heinz Mauk, Werner Rode, Richard Wollrab, Johann Ziegler, Kurt Eberhardt, Reinhard Oelmaier

Proceedings Volume 4130, (2000) https://doi.org/10.1117/12.409843

KEYWORDS: Mid-IR, Staring arrays, Quantum well infrared photodetectors, Image filtering, Digital signal processing, Nonuniformity corrections, Sensors, Target detection, Optical filters, Long wavelength infrared

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Proceedings Article | 17 July 2000 Paper

High-resolution focal plane array IR detection modules and digital signal processing technologies at AIM

Wolfgang Cabanski, Rainer Breiter, R. Koch, Karl-Heinz Mauk, Werner Rode, Johann Ziegler, Kurt Eberhardt, Reinhard Oelmaier, Harald Schneider, Martin Walther

Proceedings Volume 4028, (2000) https://doi.org/10.1117/12.391723

KEYWORDS: Quantum well infrared photodetectors, Mid-IR, Image filtering, Staring arrays, Sensors, Digital signal processing, Optical filters, Filtering (signal processing), Infrared imaging, Long wavelength infrared

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Full video format focal plane array (FPA) modules with up to 640 X 512 pixels have been developed for high resolution imaging applications in either mercury cadmium telluride (MCT) mid wave (MWIR) infrared (IR) or platinum silicide (PtSi) and quantum well infrared photodetector (QWIP) technology as low cost alternatives to MCT for high performance IR imaging in the MWIR or long wave spectral band (LWIR). For the QWIP's, a new photovoltaic technology was introduced for improved NETD performance and higher dynamic range. MCT units provide fast frame rates > 100 Hz together with state of the art thermal resolution NETD < 20 mK for short snapshot integration times of typically 2 ms. PtSi and QWIP modules are usually operated in a rolling frame integration mode with frame rates of 30 - 60 Hz and provide thermal resolutions of NETD < 80 mK for PtSi and NETD < 20 mK for QWIP, respectively. Due to the lower quantum efficiency compared to MCT, however, the integration time is typically chosen to be as long 10 - 20 ms. The heat load of the integrated detector cooler assemblies (IDCAs) could be reduced to an amount as low, that a 1 W split liner cooler provides sufficient cooling power to operate the modules -- including the QWIP with 60 K operation temperature -- at ambient temperatures up to 65 degrees Celsius. Miniaturized command/control electronics (CCE) available for all modules provide a standardized digital interface, with 14 bit analogue to digital conversion for state to the art correctability, access to highly dynamic scenes without any loss of information and simplified exchangeability of the units. New modular image processing hardware platforms and software for image visualization and nonuniformity correction including scene based self learning algorithms had to be developed to accomplish for the high data rates of up to 18 M pixels/s with 14-bit deep data, allowing to take into account nonlinear effects to access the full NETD by accurate reduction of residual fixed pattern noise. The main features of these modules are summarized together with measured performance data for long range detection systems with moderately fast to slow F-numbers like F/2.0 - F/3.5. An outlook shows most recent activities at AIM, heading for multicolor and faster frame rate detector modules based on MCT devices.

Proceedings Article | 17 July 2000 Paper

High-performance linear detector modules

Rainer Damkoehler, Kurt Eberhardt, Reinhard Oelmaier, C. Wendler, Johann Ziegler

Proceedings Volume 4028, (2000) https://doi.org/10.1117/12.391732

KEYWORDS: Sensors, Staring arrays, Readout integrated circuits, Switches, Multiplexers, Clocks, Control systems, Electronics, Signal detection, Detector arrays

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Proceedings Article | 26 July 1999 Paper

High-resolution QWIP and MCT FPA modules at AIM

Rainer Breiter, Wolfgang Cabanski, R. Koch, Werner Rode, Johann Ziegler, Kurt Eberhardt, Reinhard Oelmaier, Martin Walther

Proceedings Volume 3698, (1999) https://doi.org/10.1117/12.354541

KEYWORDS: Quantum well infrared photodetectors, Mid-IR, Staring arrays, Long wavelength infrared, Electronics, Photovoltaics, Sensors, Capacitance, Mercury cadmium telluride, Analog electronics

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Proceedings Article | 22 July 1998 Paper

Recent developments for high-performance staring IR imaging modules at AIM

Rainer Breiter, Wolfgang Cabanski, Karl-Heinz Mauk, Werner Rode, Johann Ziegler, Kurt Eberhardt, Reinhard Oelmaier

Proceedings Volume 3379, (1998) https://doi.org/10.1117/12.317601

KEYWORDS: Long wavelength infrared, Mid-IR, Image processing, Infrared imaging, Staring arrays, Quantum well infrared photodetectors, Video processing, Video, Black bodies, Nonuniformity corrections

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Proceedings Article | 22 July 1998 Paper

Recent developments for QWIP IR imaging modules at AIM

Rainer Breiter, Wolfgang Cabanski, R. Koch, Werner Rode, Johann Ziegler, Kurt Eberhardt, Reinhard Oelmaier

Proceedings Volume 3379, (1998) https://doi.org/10.1117/12.317610

KEYWORDS: Quantum well infrared photodetectors, Nonuniformity corrections, Sensors, Staring arrays, Temperature metrology, Electronics, Algorithm development, Detection and tracking algorithms, Cameras, Gallium arsenide

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Proceedings Article | 17 June 1996 Paper

AEG PtSi modules: a summary

Wolfgang Cabanski, R. Koch, Horst Maier, G. Pahler, C. Wendler, Johann Ziegler, Karl Hofmann, Kurt Eberhardt, Peter Deimel, U. Prechtel, K. Kapser

Proceedings Volume 2746, (1996) https://doi.org/10.1117/12.243048

KEYWORDS: Staring arrays, Digital signal processing, Electronics, Diodes, Clocks, Sensors, Quantum efficiency, Multiplexers, Signal processing, Digital electronics

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