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How does a frame grabber work In particular I am looking for a simple diagram but any information would be helpful?
Wiki User
∙ 14y ago
Hii.
A frame grabber is an image acquisition board which can be of 2 types: Analog and Digital. In case of an analog frame grabber, we use an analog camera and digital camera for Digital frame grabber.
In analog frame grabber the analog image signal is digitised (using A/D converter), then sent to a buffer memory. From there it is transferred to host memory i.e. RAM where processing talkes place. If no processing is required then the image can be displayed directly from the grabber buffer. It generally takes input from ADC at very high speeds, typically 60MHz and outputs at 20MHz so that no frame is lost. It also has standard I/O like a parallel port.
In case of a digital frame grabber the image is already digitised.
Wiki User
∙ 14y ago
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