Controlling an exposure time for digital cameras

Details Controlling an exposure time for digital cameras Controlling an exposure time for digital cameras

2008-08-18

2011-12-06

Laballe, Clayton E (Department: 2862)

Photography

With object illumination for exposure

Having preexposure illumination

Reexamination Certificate

active

08073321

ABSTRACT:
Various methods, apparatuses, and systems in which a digital photography device includes a global shutter to control exposure time, a sensor array, and a flash illumination are described. The global shutter is in the optical path of light going to the sensor. The flash illumination generates a pulsed illumination. The shutter speed of the global shutter during a pre-flash illumination substantially matches the shutter speed during the flash illumination during the taking of a picture using the flash illumination based on the global shutter receiving a trigger signal from a controller.

REFERENCES:
patent: 4305647 (1981-12-01), Ishida
patent: 4999663 (1991-03-01), Nakamura
patent: 5483319 (1996-01-01), Sakamoto et al.
patent: 5619266 (1997-04-01), Tomita et al.
patent: 5758220 (1998-05-01), Miyadera
patent: 6272292 (2001-08-01), Iwasaki et al.
patent: 6385122 (2002-05-01), Chang
patent: 6404991 (2002-06-01), Gfeller
patent: 6424556 (2002-07-01), Kablanian et al.
patent: 6466504 (2002-10-01), Roy
patent: 6483094 (2002-11-01), Yahav et al.
patent: 6885405 (2005-04-01), Steinberg et al.
patent: 7019780 (2006-03-01), Takeuchi et al.
patent: 7075578 (2006-07-01), Kubo
patent: 7126629 (2006-10-01), Braunstein et al.
patent: 7428378 (2008-09-01), Warpakowski Furlan
patent: 2001/0055064 (2001-12-01), Minakami
patent: 2002/0021901 (2002-02-01), Shimizu
patent: 2002/0061192 (2002-05-01), Kawasaki et al.
patent: 2002/0080245 (2002-06-01), Parulski et al.
patent: 2002/0113881 (2002-08-01), Funston et al.
patent: 2002/0154232 (2002-10-01), Tull
patent: 2002/0158987 (2002-10-01), Shimizu
patent: 2002/0164160 (2002-11-01), Fredlund et al.
patent: 2002/0196345 (2002-12-01), No
patent: 2003/0025822 (2003-02-01), Shimada
patent: 2003/0052989 (2003-03-01), Bean et al.
patent: 2004/0081446 (2004-04-01), Compton
patent: 2004/0223075 (2004-11-01), Furlan et al.
patent: 2005/0190274 (2005-09-01), Yoshikawa et al.
patent: 2005/0213957 (2005-09-01), Tokunaga
patent: 2005/0253940 (2005-11-01), Chiba et al.
patent: 2005/0263599 (2005-12-01), Zhu et al.
patent: 2006/0118627 (2006-06-01), Joseph et al.
patent: 2006/0228108 (2006-10-01), Viinikanoja et al.
patent: 2006/0267053 (2006-11-01), Yang et al.
patent: 2006/0274171 (2006-12-01), Wang
patent: WO 01/69651 (2001-09-01), None
Litwiller, “CCD vs. CMOS: Facts and Fiction,” Photonics Spectra, 4 pgs., Jan. 2001.
Shutter Operations for CCD and CMOS Image Sensors, Image Sensor Solutions, Eastman Kodak Company, Application Note, MTD/PS-0259, Revision 1, Oct. 23, 2001.
Wany, “High Dynamic CMOS Image Sensors,” G.I.T. Imaging & Microscopy, pp. 26-28, G.I.T. Verlag, Germany, Mar. 2001.
Xu et al., “Dual Frequency Cholesteric Light Shutters”, American Institute of Physics, Appl. Phys. Lett. vol. 70, No. 6, Feb. 10, 1997.

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