IMAGE SENSING APPARATUS
First Claim
1. An image sensing apparatus comprising:
- a pixel array in which a plurality of pixels are arrayed in a direction along a row and in a direction along a column, and that includes a first row and a second row;
a plurality of column signal lines that are connected to the pixel array;
an output line;
a readout unit that includes a plurality of first holding units and a plurality of second holding units, and that performs in parallel an operation of reading out pixel signals from the second row to the plurality of first holding units via the plurality of column signal lines and an operation of sequentially transferring pixel signals of columns in the first row that have been read out to the plurality of second holding units to the output line;
a driving unit that, in a transferring period for the readout unit to transfer the pixel signals of the columns in the first row to the output line, supplies to the pixel array and/or the readout unit a driving pulse for reading out the pixel signals from the second row; and
a correction unit that corrects a pixel signal of a first column in the first row that was transferred by the readout unit at a timing at which a level of the driving pulse transitions in the transferring period, according to at least a level of a pixel signal of the first column in the second row.
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Accused Products
Abstract
An image sensing apparatus comprises: a pixel array; a plurality of column signal lines; a readout unit; a driving unit that, in a transferring period for the readout unit to transfer pixel signals of columns in a first row to the output line, supplies to the pixel array and/or the readout unit a driving pulse for reading out the pixel signals from a second row, in a transferring period for the readout unit to transfer the pixel signals of the columns in the first row to the output line; and a correction unit that corrects a pixel signal of a first column in the first row that was transferred by the readout unit at a timing at which a level of the driving pulse transitions in the transferring period, according to at least a level of a pixel signal of the first column in the second row.
15 Citations
7 Claims
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1. An image sensing apparatus comprising:
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a pixel array in which a plurality of pixels are arrayed in a direction along a row and in a direction along a column, and that includes a first row and a second row; a plurality of column signal lines that are connected to the pixel array; an output line; a readout unit that includes a plurality of first holding units and a plurality of second holding units, and that performs in parallel an operation of reading out pixel signals from the second row to the plurality of first holding units via the plurality of column signal lines and an operation of sequentially transferring pixel signals of columns in the first row that have been read out to the plurality of second holding units to the output line; a driving unit that, in a transferring period for the readout unit to transfer the pixel signals of the columns in the first row to the output line, supplies to the pixel array and/or the readout unit a driving pulse for reading out the pixel signals from the second row; and a correction unit that corrects a pixel signal of a first column in the first row that was transferred by the readout unit at a timing at which a level of the driving pulse transitions in the transferring period, according to at least a level of a pixel signal of the first column in the second row. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification
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- Resources
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Current AssigneeCanon Kabushiki Kaisha (Canon Inc.)
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Original AssigneeCanon Kabushiki Kaisha (Canon Inc.)
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InventorsYamauchi, Makiko
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current348/241
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CPC Class CodesH04N 25/616 involving a correlated samp...H04N 25/617 for reducing electromagneti...H04N 25/63 applied to dark currentH04N 25/75 Circuitry for providing, mo...
