A method for measuring physiologically characteristics of user includes: using at least one light emitting unit to emit light ray including first light component corresponding to first wavelength and second light component corresponding to second wavelength different from the first wavelength using an image sensing circuit to sense and generate at least one physiologically characteristics measurement signal in response to the light ray performing an offset calibration operation upon the physiologically characteristics measurement signal to generate at least one calibrated measurement signal and, calculating the calibrated measurement signal to estimate a physiologically characteristics result.一種量測生理特徵之方法,包含:使用至少一發光單元,用以發射至少一光線,該至少一光線包含對應於一第一波長之一第一光線成份及對應於一第二波長之一第二光線成份,該第一波長不同於該第二波長;使用一影像感測電路,因應於該至少一光線,感測產生至少一生理特徵量測訊號;對於該至少一生理特徵量測訊號進行一偏移校正操作,以產生至少一校正後之生理特徵量測訊號;以及,對該至少一校正後之生理特徵量測訊號進行計算,以估測得到一生理特徵結果。100‧‧‧電子裝置105‧‧‧影像感測電路110‧‧‧發光單元115‧‧‧光源控制器120‧‧‧處理電路1201‧‧‧偏移量決定單元1202‧‧‧動作雜訊校正單元1203‧‧‧生理特徵估測單元
