Image-pickup display apparatus

An image-pickup display apparatus comprising:

• a camera unit including:
• an image-pickup optical system;
• an image-pickup device having a light intercepting surface at a position of image formation by said image-pickup optical system;
• a signal processing circuit for generating a picture signal based on an image-pickup signal output by said image-pickup device;
• and
• a controller unit for correcting exposure by controlling said image-pickup device and said signal processing circuit, and
• a display unit including:
• a liquid-crystal display unit having a liquid-crystal display panel to display a picture and a back-light to illuminate a rear side of said liquid-crystal display panel;
• a driver unit producing a drive/control signal fed to said liquid-crystal display unit for driving and controlling a brightness and a contrast of said liquid-crystal display panel and producing a drive/control feedback signal fed to said controller unit;
• a back-light controller for driving and controlling a brightness of said back-light;
• and
• a picture processor for outputting a driving signal to said driver unit based on said picture signal generated by said signal processing circuit employed in said camera unit,
• wherein upon receiving said feedback drive/control signal output by said driver unit of said display unit by the signal processing circuit of the camera unit as a feedback signal, said controller unit controls said picture processor and said back-light controller employed in said display unit and controls said image-pickup device and said signal processing circuit of the camera to be in an optimum range of the brightness and contrast of said liquid-crystal display unit.