Abstract
In this article, we report the characterization results of two data integrated video sensors designed by Clifton Labs, Inc. A data integrated video sensor consists of an array of photodetectors that each provide both an analog (video) and digital (data) output based on the amount of incident light on the detector. Video capture occurs using a simple sample-and-hold circuit. In the first sensor, data capture occurs using an externally supplied voltage to provide a threshold that is used to determine if a value is a ‹1’ or ‹0’. In the second sensor, another sample-and-hold circuit is use to capture data values. The first design is characterized for output response at a given sample frequency for the video portion. The maximum data rate and optical response at a given data threshold are defined for the digital circuitry. Next, the digital and analog output values of the second chip are correlated to the incident optical power and the sample time used to capture the data. The results of these tests provide insight into the operation of the two designs and confirm simulation results used in the design of the circuits.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Beyette, F. R., Martin, D. E., Dieckman, D., Fearing, C., & Wilsey, P. A. (2004). Design and demonstration of a data integrated video sensor. In Proceedings Society Photo-optical Instrumentation Engineers (SPIE) Jan. 24–29, (vol. 5363, pp. 65–76). San Jose, CA.
Kahn, J. M., & Barry, J. R. (1997). Wireless infrared communications. Proceedings of the IEEE, 85(2), 265–298.
Mendis, S. K., Kemeny, S. E., Gee, R. C., Pain, B., Staller, C. O., Kim, Q., & Fossum, E. R. (1997). CMOS active pixel image sensors for highly integrated imaging systems. IEEE Journal of Solid-State Circuits, 32(2), 187–197.
PHOCI™ at Clifton Labs, Inc. website, 2006. http://www.cliftonlabs.com/phoci
Tang, J., Seshadri, B., Naughton, K. N., Lee, B. K., Chi, C. J., Steckl, A. J., & Beyette, F. R. Jr. (2000). CMOS-based photoreceiver arrays for page-oriented optical storage access. IEEE Photonics Technology Letters, 12, 1234–1236.
Theuwissen, A. J. P. (1995). Solid-State Imaging with Charge-Coupled Devices. Kluwer Academic.
Acknowledgment
Support for this work was provided in part by the Army Research Office under contract DAAD19–03–C–0045.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Hickey, D.R., Fearing, C.J., Beyette, F.R. et al. Characterization of the PHOCI™ data integrated video sensor technology. Analog Integr Circ Sig Process 56, 61–69 (2008). https://doi.org/10.1007/s10470-007-9112-2
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10470-007-9112-2