| 摘要 |
An electronic device can include circuitry that compensates for the emission intensity of a display, including a radiation-emitting component, in response to ambient radiation. In one embodiment, the circuitry includes a low-pass filter that can help to reduce the effect of quick changes in intensity of ambient radiation. In another embodiment, an electronic device includes a dual-function electronic component and a switch. The switch is configured to be closed at least during a portion of time while the dual-function electronic component is between an emission mode and a sensing mode. In still another embodiment, the circuitry includes a current amplifier that is configured to amplify a current from a radiation-sensing component to produce an amplified current. In yet another embodiment, the circuitry includes an I-V converter and a voltage amplifier. The I-V converter converts a current from a sensor to a voltage, and the voltage amplifier amplifies that voltage.
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