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US 12,750,597 B2Granted
Imaging system with noise reduction
AssigneeVarex Imaging Corporation
InventorsRichard Weisfield, Steven Freestone
Life of this patent
Estimating the term…
Abstract
Embodiments include applying a first pulse to a first gate line of a plurality of gate lines of an imaging array; applying a second pulse to other gate lines of the plurality of gate lines while applying the first pulse, the second pulse having a polarity opposite to the first pulse; and sampling pixels coupled to the first gate line while applying the first pulse using sampling circuits.
Claims20
A method, comprising:
- applying a first pulse to a first gate line of a plurality of gate lines of an imaging array;
- applying a second pulse to other gate lines of the plurality of gate lines while applying the first pulse, the second pulse having a polarity opposite to the first pulse;
- sampling pixels coupled to the first gate line using sampling circuits by turning on a sampled signal while applying the first pulse and the second pulse;
- and
- turning off the sampled signal, the first pulse, and the second pulse at the same time.
2 more elements
A system, comprising:
- an imaging array include a plurality of pixels;
- a row driver configured to apply voltages to a plurality of gate lines of the imaging array;
- sampling circuits configured to sample signals from the pixels of the imaging array;
- control logic coupled to the row driver and sampling circuits, wherein the control logic is configured to:
- control the row driver to apply a first pulse to a first gate line of the plurality of gate lines;
- control the row driver to apply a second pulse to other gate lines of the plurality of gate lines while applying the first pulse, the second pulse having a polarity opposite to the first pulse;
- and
- control the sampling circuits to sample pixels coupled to the first gate line by turning on a sampled signal while applying the first pulse;
- and
- turn off the sampled signal and the first pulse at the same time.
7 more elements
A system, comprising:
- a row driver for:
- applying a first pulse to a first gate line of a plurality of gate lines of an imaging array;
- and
- applying a second pulse to other gate lines of the plurality of gate lines while applying the first pulse, the second pulse having a polarity opposite to the first pulse;
- and
- a sampling circuit for sampling pixels coupled to the first gate line while applying the first pulse;
- and
- a control logic for controlling operations of the row driver and the sampling circuit, wherein the sampling circuit is configured to sample the pixels before turning off the first pulse to the first gate line.
5 more elements
Dependencies are inferred from the claim text.