Automatic control circuit for a video camera

Details Automatic control circuit for a video camera Automatic control circuit for a video camera

H - Electricity

04

N

350/48

H04N 5/217 (2006.01) H04N 9/09 (2006.01) H04N 9/093 (2006.01)

Patent

CA 1207892

ABSTRACT OF THE DISCLOSURE An automatic control circuit for a video camera is disclosed which includes an error detecting circuit for detecting and generating an error data, a control signal generator supplied with the error data and for generating a control signal and a control circuit supplied with the control signal and for controlling a controlled circuit for the video camera, wherein said control signal generator mixes a reference correcting data generated from the error data with the control signal thereby to generate a new control signal and the control signal generator includes a circuit for changing the polarity of the reference correcting data and decreasing the absolute value of the reference correcting data when the error data changes its polarity and a circuit for averaging the plural control signals each of which is generated when the reference correcting data is at its minimum value and the error data changes its polarity, the output of the averaging circuit being the control signal.

463532

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