Television Camera Tubes
Albert Rose · Vision · 1973
At the outset, we recognize an obvious difference between the human visual process and the equivalent electronic camera tube. In the retina, all of the elements transmit their optical information simultaneously to the brain. In the camera tube, the elements are scanned serially at a rate sufficiently high that they appear to the eye to be simultaneous. The camera tube could, in principle, be designed to have all of its picture elements transmit their information simultaneously to the receiver. The resulting system would be cumbersome compared with the conventional scanning systems. There is, however, no fundamental difference in sensitivity to be expected between a simultaneous and a properly designed sequentially scanned system. The scanning process only imposes its own set of technical problems without fundamentally limiting the performance of the system. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.