Final answer:
The signal plate is responsible for transporting the video signal from a television camera's target assembly to a camera control unit. The CCD sensor within the target assembly converts light into electronic signals which are then transmitted through the signal plate.
Step-by-step explanation:
The component that transports the video signal from a television camera's target assembly to a camera control unit is the signal plate. Television cameras use a charge-coupled device (CCD), which is an electronic light sensor that converts light into electronic signals. The CCD is an integral part of the target assembly in a camera and is responsible for capturing the image as a series of electronic signals, after which these signals are passed through the signal plate to the camera control unit. This process is the basis for electronic imaging in all digital cameras, including those that are built into devices like cell phones and those used for professional movie cameras.