Appeal No. 2004-1487
Application No. 09/085,519
the field of active cell array 312 is read, its signals are
converted to digital signals by analog-to-digital converter 322
and then the appropriate column fixed pattern noise signals that
are stored in fixed pattern noise storage area 326 is subtracted
from them by fixed pattern noise canceling processor 330. See
page 6 of Appellant's specification.
Claim 1 is representative of Appellant's claimed invention
and is reproduced as follows:
1. A MOS image sensor comprising:
a pixel array formed from a plurality of individual pixels
organized as rows and columns, said pixel array including a
reference row;
analog signal processing circuitry for reading out analog
signals from the pixel array;
an analog-to-digital converter for converting analog signals
from the analog processing circuitry into digital signals;
fixed pattern noise storage circuitry for storing digital
signals representative of the signals from the reference row of
the pixel array; and
a fixed pattern noise canceling processor for subtracting
the digital reference row signals stored in the fixed pattern
noise storage circuitry from the digital signals representative
of the signals from the other pixels in the pixel array.
33
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