Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
2007-11-20
2007-11-20
Kim, Ahshik (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
C235S462220, C235S454000
Reexamination Certificate
active
11040485
ABSTRACT:
A machine-readable symbol reader includes a microfluidic lens assembly providing responsive, reliable auto-focus functionality. A range finder may provide distance to a planar target (e.g., barcode symbol) information for use in auto-focusing, with or without localization. Illumination system, if included, is selectively controlled based on the distance to target and auto-focusing functionality to substantially reduce power consumption. The localization may color optical sensors.
REFERENCES:
patent: 5574598 (1996-11-01), Koumura et al.
patent: 5640001 (1997-06-01), Danielson et al.
patent: 5783811 (1998-07-01), Feng et al.
patent: 5864128 (1999-01-01), Plesko
patent: 6316781 (2001-11-01), Nagle et al.
patent: 6369954 (2002-04-01), Berge et al.
patent: 6894652 (2005-05-01), Rawnick et al.
patent: 6976629 (2005-12-01), Carlson
patent: 7038856 (2006-05-01), Quake et al.
patent: 2001/0002033 (2001-05-01), Winarski et al.
patent: 7-105305 (1995-04-01), None
Berge, B., et al., “Variable Focal Lens Controlled by an External Voltage: An Application of Electrowetting,”The European Physical Journal E, 3:159-163, 2000.
Chern, N., et al., “Practical Issues in Pixel-Based Autofocusing for Machine Vision,” inProceedings of the 2001 IEEE International Conference on Robotics and Automation, Seoul, Korea, May 21-26, 2001, pp. 2791-2796.
Love, G., “Adaptive Optical Components Using Liquid Crystal Devices,”Journal of the Communications Research Laboratory, 46(3):427-430, Nov. 1999.
Keren, D., et al., “Restoring Subsampled Color Images,”Machine Vision and Applications, 11:197-202, 1999.
Marino, B., et al., “Improving the Performance of Single Chip Image Capture Devices,”Journal of Electronic Imaging, 12(2):209-218, Apr. 2003.
Ramanath, R., et al., “Demosaicking Methods for Bayer Color Arrays,”Journal of Electronic Imaging, 11(3):306-315, Jul. 2002.
Schechner, Y., et al., “The Optimal Axial Interval in Estimating Depth From Defocus,”Proceedings of the International Conference on Computer Vision, Kerkyra, 1999, pp. 834-838.
Subbarao, M., et al., “The Optimal Focus Measure for Passive Autofocusing and Depth-From-Focus,” SPIE, vol. 2598, pp. 89-99.
Subbarao, M., et al., “Focusing Techniques,” inProceedings of the OE/Technology SPIE Conference, Boston, MA, Nov. 1992.
Vdovin, G., “Fast Focusing of Imaging Optics Using Micromachined Adaptive Mirrors,” Apr. 1997, URL=http://guernsey.et.tudelft.nl/focus/, download date Jun. 21, 2005.
Wei, T-C, “Three Dimensional Machine Vision Using Image Defocus,” dissertation, State University Of New York, 1994.
Intermec IP Corp.
Kim Ahshik
Seed IP Law Group PLLC
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