特殊用法back clamping1.反向箝位black-level clamping1.黑电平箝位horizontal clamping1.水平钳位line-by-line clamping1.逐行箝位negative clamping1.负向箝位， 负（脉冲）箝位soft clamping1.软钳位synchronized clamping1.同步（电平）箝位