Imager row control-signal tester
AssigneeAptina Imaging Corporation
InventorsSohrab Yaghmai, Tore Martinussen
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Abstract
Row-control signal monitoring system for an electronic imager includes signal processing circuitry coupled a pixel array of the electronic imager which receives at least one row control signal from the pixel array and provides an output signal corresponding to the selected row control signal. Monitoring circuitry compares the output signal to a target value to test the at least one row-control signal.
Claims20
Row-control signal monitoring apparatus for an electronic imager having a pixel array including a plurality of rows of pixels, the pixel array having first and second sides and row addressing circuitry coupled to the first side of the pixel array, the apparatus comprising:
- signal processing circuitry coupled to the second side of the pixel array and configured to receive at least one row control signal from the pixel array, to process the at least one row control signal and to provide an output signal at an output terminal;
- and
- monitoring circuitry having an input terminal coupled to the output terminal of the signal processing circuitry for comparing the output signal of the signal processing circuitry to a target value to test the at least one row-control signal.
A method for monitoring row-control signals in an electronic imager having a pixel array including a plurality of rows of pixels, the pixel array having first and second sides and row addressing circuitry coupled to the first side of the pixel array, the method comprising:
- processing at least one of the row-control signals provided at the second side of the pixel array to provide an output signal;
- and
- monitoring the output signal by comparing the output signal to a target value to test the at least one row-control signal.
Dependencies are inferred from the claim text.