Sandor Barna Phones & Addresses
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Portland, OR
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Chula Vista, CA
Publications
Us Patents
Dual Sensitivity Image Sensor
View pageUS Patent:
6972794, Dec 6, 2005
Filed:
Jun 15, 2000
Appl. No.:
09/596757
Inventors:
Yibing Michelle Wang - La Jolla CA, US
Sandor Barna - Pasadena CA, US
Sandor Barna - Pasadena CA, US
Assignee:
Micron Technology, Inc. - Boise ID
International Classification:
H04N003/14
US Classification:
348302
Abstract:
A system of taking images of different sensitivities at the same time uses both an image sensor, and an auxiliary part to the image sensor. The image sensor element can be a photogate, and the auxiliary part can be the floating diffusion associated with the photogate. Both the photogate and the floating diffusion accumulate charge. Both are sampled at different times. The floating diffusion provides a lower sensitivity amount of charge than the photogate itself. The system can have a photogate and floating diffusion in each pixel along with a select transistor, a reset transistor, and a follower transistor. All of this circuitry can be formed of CMOS for example. The system can also operate in a column/parallel mode, where each column of the photo sensor array can have a column signal processor which samples and holds the reset signal, the floating diffusion signal and the photogate signal.
Dual Sensitivity Image Sensor
View pageUS Patent:
7605855, Oct 20, 2009
Filed:
Sep 1, 2005
Appl. No.:
11/216172
Inventors:
Yibing Michelle Wang - La Jolla CA, US
Sandor Barna - Pasadena CA, US
Sandor Barna - Pasadena CA, US
Assignee:
Aptina Imaging Corporation
International Classification:
H04N 5/335
H01L 27/00
H03K 23/46
H01L 27/00
H03K 23/46
US Classification:
348308, 2502081, 377 60, 348302
Abstract:
A system of taking images of different sensitivities at the same time uses both an image sensor, and an auxiliary part to the image sensor. The image sensor element can be a photogate, and the auxiliary part can be the floating diffusion associated with the photogate. Both the photogate and the floating diffusion accumulate charge. Both are sampled at different times. The floating diffusion provides a lower sensitivity amount of charge than the photogate itself. The system can have a photogate and floating diffusion in each pixel along with a select transistor, a reset transistor, and a follower transistor. All of this circuitry can be formed of CMOS for example. The system can also operate in a column/parallel mode, where each column of the photo sensor array can have a column signal processor which samples and holds the reset signal, the floating diffusion signal and the photogate signal.
Dual Sensitivity Image Sensor
View pageUS Patent:
7889258, Feb 15, 2011
Filed:
Sep 11, 2009
Appl. No.:
12/557670
Inventors:
Yibing (Michelle) Wang - La Jolla CA, US
Sandor Barna - Pasadena CA, US
Sandor Barna - Pasadena CA, US
Assignee:
Aptina Imaging Corporation - George Town
International Classification:
H04N 3/14
US Classification:
348308
Abstract:
A system of taking images of different sensitivities at the same time uses both an image sensor, and an auxiliary part to the image sensor. The image sensor element can be a photogate, and the auxiliary part can be the floating diffusion associated with the photogate. Both the photogate and the floating diffusion accumulate charge. Both are sampled at different times. The floating diffusion provides a lower sensitivity amount of charge than the photogate itself. The system can have a photogate and floating diffusion in each pixel along with a select transistor, a reset transistor, and a follower transistor. All of this circuitry can be formed of CMOS for example. The system can also operate in a column/parallel mode, where each column of the photo sensor array can have a column signal processor which samples and holds the reset signal, the floating diffusion signal and the photogate signal.