Video camera with multiple independent outputs
First Claim
1. Process for providing multiple independent video image output signals from a single video sensor in which a video camera captures a scene and produces a video signal comprising sequential digital video images, the process comprising:
- Storing a sequence of a predetermined number of said sequential video images in a video memory unit;
Accessing the video images in said video memory unit and providing said video images in parallel to two or more independent video output processing circuits; and
Processing the video images in each of said output processing circuits to provide respective independently formatted video output signals to a plurality of video output ports.
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Abstract
A multiple output video camera employs a multi-tap memory access system, in which an image input DMA master writes frames of a source image at a maximum frame rate and maximum resolution, via an image bus and a memory controller, into an image memory. In the multi-tap multiple access memory system, a plurality of concurrent independent video output circuits, each possess an image bus input/output master coupled to the image bus; an independent video signal processing circuit; and an output circuit that provides an independently processed version of the sequential video images to a respective output port. The outputs can be digital or analog.
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Citations
18 Claims
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1. Process for providing multiple independent video image output signals from a single video sensor in which a video camera captures a scene and produces a video signal comprising sequential digital video images, the process comprising:
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Storing a sequence of a predetermined number of said sequential video images in a video memory unit;
Accessing the video images in said video memory unit and providing said video images in parallel to two or more independent video output processing circuits; and
Processing the video images in each of said output processing circuits to provide respective independently formatted video output signals to a plurality of video output ports. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A multiple output video camera arrangement comprising:
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Image sensor means for forming and capturing an image of a target and producing a video signal as sequential frames of digital video images;
An image memory for storing a sequence of a predetermined number of frames of said sequential images;
A multi-tap multiple access memory system which includes An image input master having an input coupled to said image sensor means for receiving said sequential video image, and an output;
A multi-master image bus coupled to the output of said image input master;
A memory controller coupled to said image bus and to said image memory; and
A plurality of concurrent independent video output circuits, each including an image bus master coupled to said image bus;
an independent video signal processing circuit; and
an output circuit portion providing an independently processed version of said sequential video images to a respective independent output port. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification