Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2009-06-03
2011-11-29
Epps, Georgia Y (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S2140AG, C348S241000
Reexamination Certificate
active
08067720
ABSTRACT:
An image sensing device includes a pixel array, a plurality of column amplification units each including a setting unit, and a plurality of reference signal supply units. A first reference signal and a second reference signal are common to a plurality of columns in the pixel array. Each of the plurality of column amplification units amplifies the difference between the first reference signal and the second reference signal to output the amplified difference, or amplifies each of the first reference signal and the second reference signal to output the amplified first reference signal and the amplified second reference signal. The setting unit of each amplification unit sets an amplification factor which is determined in accordance with a signal output from each of the plurality of column amplification units so as to reduce variations of the amplification factor between the plurality of column amplification units.
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Canon Kabushiki Kaisha
Epps Georgia Y
Fitzpatrick ,Cella, Harper & Scinto
Naphas Renee
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