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An analogue time stretcher for a 3D time of flight camera
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Oulu University of Technology.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
2012 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

The analogue time expansion technique, where the time interval to be measured is stretched by a factor k, can be realized with current integration. This kind of time stretcher can be used as a time domain amplifier to improve the precision of the time to digital conversion. Two specific circuit techniques have been investigated for the realization of a time stretcher in a CMOS technology. A comparison has been made between a Miller and an open-loop integrator based time stretcher with respect to the available linearity, power consumption and circuit area. The simulations show that the open loop approach with carefully optimized circuit configurations may lead to a compact and low power single photon avalanche diode pixel configuration with the required time amplification property. The application field for the studied techniques in this work is the on-pixel-based time interval measurement unit in 3D time-of-flight cameras based on a 2D single photon avalanche diode array.

Place, publisher, year, edition, pages
2012.
Keyword [en]
Time to digital converter, 3D time of ight camera, Time stretcher, wide swing cascode cur- rent source/sink, Analogue time expansion, Single photon avalanche diode, open-loop integration, Technology - Electrical engineering, electronics and photonics
Keyword [sv]
Teknikvetenskap - Elektroteknik, elektronik och fotonik
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-31791Local ID: 612dd9fd-1bf5-4282-9de2-f1df50044211OAI: oai:DiVA.org:ltu-31791DiVA: diva2:1005025
Conference
International Conference on 3D Converged IT and Optical Communication : 06/09/2012 - 08/09/2012
Projects
Känsligare avståndssensor baserad på TOF, Fas II, ESIS
Note

Godkänd; 2012; Bibliografisk uppgift: My focus is on the design of solid-state image sensors, capable of measuring time-of-flight needed by a light source to the target and back to sensor. In this paper a comparison has been performed between conventional Miller integrator based time stretcher and open-loop integration based time stretcher to select an optimal approach for final integration with Time to digital converter.; 20121011 (ysko)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
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  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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  • asciidoc
  • rtf