Inventor
CAMPBELL DAVID K
US31 patents
⚠️ This page may combine multiple inventors who share the name “CAMPBELL DAVID K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD DEVELOPMENT CO
12 patentsUS7262798B2Aug 28, 2007
System and method for simulating fill flash in photography
HEWLETT PACKARD DEVELOPMENT CO96 citations98
US6812907B1Nov 2, 2004
Segmented electronic display
HEWLETT PACKARD DEVELOPMENT CO136 citations98
US7298414B2Nov 20, 2007
Digital camera autofocus using eye focus measurement
HEWLETT PACKARD DEVELOPMENT CO21 citations92
US7167201B2Jan 23, 2007
Device incorporating eye-start capability
HEWLETT PACKARD DEVELOPMENT CO24 citations92
US7084910B2Aug 1, 2006
System and method for using multiple images in a digital image capture device
HEWLETT PACKARD DEVELOPMENT CO51 citations92
US7016604B2Mar 21, 2006
Autofocus using a holographic aperture element
HEWLETT PACKARD DEVELOPMENT CO18 citations92
US6993256B2Jan 31, 2006
Zoom and focus control method and system
HEWLETT PACKARD DEVELOPMENT CO11 citations83
USD484162SDec 23, 2003
Camera
HEWLETT PACKARD DEVELOPMENT CO13 citations79
US6714731B2Mar 30, 2004
Zoom and focus control method and system
HEWLETT PACKARD DEVELOPMENT CO11 citations73
US8045009B2Oct 25, 2011
Image-exposure systems and methods using detecting motion of a camera to terminate exposure
HEWLETT PACKARD DEVELOPMENT CO5 citations63
US7265790B2Sep 4, 2007
System and method for setting an image capture device to an operational mode
HEWLETT PACKARD DEVELOPMENT CO5 citations63
US7502057B2Mar 10, 2009
Method and apparatus for color non-uniformity correction in a digital camera
HEWLETT PACKARD DEVELOPMENT CO6 citations62
HEWLETT PACKARD CO
9 patentsUS5969372AOct 19, 1999
Film scanner with dust and scratch correction by use of dark-field illumination
HEWLETT PACKARD CO138 citations97
US5995243ANov 30, 1999
Illumination system with white level calibration for hand-held scanner
HEWLETT PACKARD CO43 citations92
US5723859AMar 3, 1998
Line contact hand-held scanning device and method having a light path substantially perpendicular to the orientation of the object at a line portion
HEWLETT PACKARD CO23 citations92
US5432763AJul 11, 1995
Subminiature rotary actuator optical head
HEWLETT PACKARD CO54 citations92
US5197058AMar 23, 1993
Electronic offset compensation of the continuous composite track error signal in optical recording
HEWLETT PACKARD CO24 citations92
US4688201AAug 18, 1987
Focusing and tracking apparatus for an optical data storage device
HEWLETT PACKARD CO30 citations92
US5777321AJul 7, 1998
Scanning device with non-contact optical components
HEWLETT PACKARD CO12 citations74
US5665963ASep 9, 1997
Reflective color filter for color correction of photodetector filters
HEWLETT PACKARD CO12 citations74
US5070493ADec 3, 1991
Wedge prism assembly for optical information storage
HEWLETT PACKARD CO12 citations73
HARRIS CORP
3 patentsUS4389671AJun 21, 1983
Digitally-controlled analog encrypton
HARRIS CORP272 citations93
US4423488ADec 27, 1983
Digital filter employing PROM for storing positive and negative impulse response values
HARRIS CORP11 citations74
US4332029AMay 25, 1982
Automatic alignment system for a digital modem
HARRIS CORP17 citations71