Remote camera control system with compensation for signal transmission delay

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5838368
SERIAL NO

08079616

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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In a camera control system, a video signal from a camera is displayed on a monitor with some delay. An operation signal from a joystick disposed on the side of the monitor is transmitted to a data comparison circuit through a transmission system, a control unit and a counter. A panning operation on the camera is performed through a motor by applying a driving signal from a panhead driving circuit according to a difference between the operation signal and panning position detection data from a panning position detector. After that, in response to a signal indicating a stop of operation on the joystick, the control unit sends delayed panning position detection data obtained from a data delay circuit to the data comparison circuit. The panned position of the camera is thus shifted back to the panning position indicated by the delayed data obtained when the panning operation is stopped. The tilting and zooming operations on the camera can be controlled also in the same manner.

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First Claim

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Masunaga, Makoto Tokyo, JP 34 853
Ohiwa, Yasuyuki Tokyo, JP 4 100

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