Invention Application
US20030174249A1 Calibration device for a video input stage 有权
视频输入级的校准装置

Calibration device for a video input stage
Abstract:
A calibration device for a video circuit input stage comprises an analog-to-digital converter and an input capacitor constantly discharged by a power source and recharged by a charging circuit by means of a first and a second charging current. The charging circuit is controlled by a central processing unit receiving an estimate of the variation between the converter's output code and a clamp value.
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