| 摘要 |
The Present Invention relates to methods and systems particularly useful in electrical products used to monitor and detect very weak signals. These products include, for example, night vision binoculars and remote listening devices. More specifically, the methods and systems of the Present Invention provide a signal conditioning technique that attenuates electrical noise generated within the product while at the same time preserving the integrity of the input signal. This provides a high signal-to-noise ratio within the product electronics and a dramatically clear final image. The Present Invention includes a method and system for chopping or splitting an input signal into two components, tagging each of the split signal components with opposite polarities, and a second reverse chopping step that combines the split and tagged input signal components into a restored input signal. The combining step, in addition to restoring the original input signal, cancels and attenuates internally generated, and untagged, electronic noise, providing image quality and detection in an efficient and economical manner that could not be obtained in the past.
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