Encoding apparatus for a closed circuit television system
First Claim
1. In a closed circuit television system having a camera of controllable azimuth which generates an output signal including a video signal, a horizontal synchronization signal, and a vertical synchronization signal, a monitor remote from said camera for displaying a picture defined by said video signal, and means proximate the camera for generating a first signal representative of the azimuth of the camera, the improvement comprising:
- means for encoding said first signal whereby the encoded first signal defines an indicator for display on the monitor;
means for transmitting the video signal and the encoded first signal to the monitor for simultaneous display thereon, said encoding means controlling the position of said indicator on the monitor in response to said first signal for providing a visual indication of the azimuth of said camera.
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Accused Products
Abstract
Apparatus for generating an indicator on a remote monitor screen representative of the orientation of the monitoring camera. A sensor on the camera produces a signal proportional to the camera orientation. An encoder, including a sawtooth generator, a comparator, and time delay single-shot multivibrators, is synchronized to the camera video horizontal and vertical synchronization signals to provide a camera orientation indicator on the monitor. A modulator at the camera superimposes the encoded indicator signal onto the camera video signal thereby producing a single composite signal for transmission preferably over a single video or RF cable to the monitor.
101 Citations
9 Claims
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1. In a closed circuit television system having a camera of controllable azimuth which generates an output signal including a video signal, a horizontal synchronization signal, and a vertical synchronization signal, a monitor remote from said camera for displaying a picture defined by said video signal, and means proximate the camera for generating a first signal representative of the azimuth of the camera, the improvement comprising:
means for encoding said first signal whereby the encoded first signal defines an indicator for display on the monitor;
means for transmitting the video signal and the encoded first signal to the monitor for simultaneous display thereon, said encoding means controlling the position of said indicator on the monitor in response to said first signal for providing a visual indication of the azimuth of said camera.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
Specification