Image pickup apparatus for controlling the discharge of information charges in the image pickup apparatus

摘要

Image information can be supplied from an image pickup apparatus to computer equipment at high speed. A solid state image pickup device 1 is vertically driven by a vertical drive circuit 2v and horizontally driven by a horizontal drive circuit 2h. The vertical drive circuit 2v operates at a given cycle in response to a vertical timing signal VT from a vertical timing control circuit 21v which operates according to a frequency dividing clock DCK with a given cycle. The horizontal drive circuit 2h operates in response to a horizontal timing signal HT from a horizontal timing control circuit 21h to be driven in response to a transfer trigger TR which is supplied from the computer equipment. An exposure control circuit 23 responds to a horizontal transfer flag HF which is supplied from the horizontal timing control circuit 21h and determines timing for discharge driving excluding a period of the horizontal transfer drive.