H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/32
H04N 5/00 (2006.01) H04N 5/262 (2006.01)
Patent
CA 1123508
ABSTRACT OF THE DISCLOSURE Television apparatus for producing signals for display- ing simultaneously a succession of time-separated images of an object moving in an otherwise static scene, control is provided for causing a limited number of decaying stroboscopic images of successive positions of a moving object to appear behind the image representing the latest position of the moving object including a reference field for storing video representing a scene at the start of an action cycle, a comparator for comparing picture elements of selected subsequently arriving television fields with corresponding picture elements of the stored reference field, and means for tagging and string those picture elements of the selected subsequently arriving fields shown by the comparison to be measurably different from corresponding picture elements in the reference field. However, whereas the action cycle of the previous systems is terminated by the operator, at which time there is provided a video signal for display representing the substantially static scene with the substitution therein of those picture elements stored during the selected time period, in the present system the action is live and continuous, with a preselect- ed amplitude proportion of the tagged picture elements mixed with a complementary amplitude proportion of the real time video, thereby to cause the tagged picture elements to decay in ampli- tude at a selectable rate. The system operates in a recursive mode thereby to cause earlier images of the moving object each to decay by a predetermined amount with each sampled mix of a sub- sequently arriving field and the stored field, and causing earlier images to decay into the background of the scene.
329527
Cbs Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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