Radiographic Imaging Device Feed-Through Noise Suppression

The patent applies self-service by using the existing gate lines and switching elements to generate cancel signals for feed-through noise. The gate lines that already control the switching elements are reused to output inverse voltages that cancel the feed-through, eliminating the need for dedicated adjusting sections. This allows the system to suppress noise while maintaining simplicity.

The patent applies preliminary action by outputting the inverse voltage from the gate lines before the switching elements are turned ON. This timing ensures that the cancel signal is already present when the feed-through occurs, allowing effective noise cancellation without interfering with the signal charges. The dynamic range is preserved because the cancel operation does not require additional integration time that would narrow the range.

The patent applies multi-functionality by making the gate lines serve dual purposes: controlling the switching elements and generating cancel signals for feed-through noise. The same gate lines that switch the TFTs ON and OFF are also used to output inverse voltages for noise cancellation, eliminating the need for separate selection switches or dedicated adjusting sections on the signal lines.

The patent converts the harmful feed-through effect into a beneficial cancellation opportunity. By outputting inverse voltages from the gate lines at appropriate timings, the feed-through noise is transformed and canceled out. This allows the system to maintain low imaging doses for high-speed moving-image capture while effectively suppressing the feed-through effect that would otherwise become more prominent at lower doses.