Patent ID: 11887284
Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 8:
9. The system of claim 8, wherein the determining the reference gain ratio based on the first gain ratio, the second gain ratio, the third gain ratio, and the preliminary gain ratio includes:
determining whether the preliminary gain ratio is between the first gain ratio and the second gain ratio;
in response to a determination that the preliminary gain ratio is between the first gain ratio and the second gain ratio, determining the preliminary gain ration as the reference gain ratio;
in response to a determination that the preliminary gain ratio is outside a range between the first gain ratio and the second gain ratio, determining whether an absolute value of a difference between the preliminary gain ratio and the third gain ratio is less than a fourth threshold;
in response to a determination that the absolute value is less than the fourth threshold, determining the preliminary gain ration as the reference gain ratio; and
in response to a determination that the absolute value is larger than or equal to the fourth threshold, determining the third gain ration as the reference gain ratio.