HL (last horizontal transfer) signal in H-Driver

Hello,

What's the purpose of the HL signal in a CCD sensor? What's the purpose of the HL signal in the ToF controller? What is it responsible for? What happens if a CCD sensor doesn't have a Last Horizontal Transfer lead on its package? Where do I connect the HL signal on a ToF controller if a CCD sensor doesn't have such a corresponding signal?

Kind Regards,

Martin Botsov