Television system for displaying and recording paths of motion
First Claim
Patent Images
1. Method for generating a video signal for displaying simultaneously a succession of images of an object moving over a selectable time period in an otherwise substantially static scene, comprising the steps of:
- (a) storing for the duration of a selected time period a reference frame of video representing said scene at the start of a selected time period;
(b) comparing picture elements of selected television frames subsequently arriving during the selected time period with corresponding picture elements of the said reference frame;
(c) separately storing those picture elements of the subsequently arriving frames which are shown by the comparison to be different from those in said reference frame and assigning to the later value for a picture element separately stored priority over an earlier separately stored value derived during the selected time period for the same picture element; and
(d) at the termination of the selected time period, providing a video signal for display representing at least those picture elements separately stored during the selected time period.
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Abstract
In television apparatus for producing signals for displaying simultaneously a succession of time-separated images of an object moving over a selectable time period in an otherwise static scene, the effect of the display is improved, particularly in situations where there is partial overlap of successive images of the object, by causing the latest image of the moving object to take precedence over the next previous image.
35 Citations
16 Claims
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1. Method for generating a video signal for displaying simultaneously a succession of images of an object moving over a selectable time period in an otherwise substantially static scene, comprising the steps of:
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(a) storing for the duration of a selected time period a reference frame of video representing said scene at the start of a selected time period; (b) comparing picture elements of selected television frames subsequently arriving during the selected time period with corresponding picture elements of the said reference frame; (c) separately storing those picture elements of the subsequently arriving frames which are shown by the comparison to be different from those in said reference frame and assigning to the later value for a picture element separately stored priority over an earlier separately stored value derived during the selected time period for the same picture element; and (d) at the termination of the selected time period, providing a video signal for display representing at least those picture elements separately stored during the selected time period.
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2. Method for generating a video signal for displaying simultaneously a succession of images of an object moving over a selectable time period in an otherwise substantially static scene, comprising the steps of:
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(a) storing for the duration of a selected time period a reference frame of video representing said scene at the start of a selected time period; (b) comparing picture elements of selected time-separated television frames subsequently arriving during the selected time period with corresponding picture elements of said reference frame; (c) separately storing those picture elements of the subsequently arriving frames shown by the comparison to be measurably different from those in the said reference frame, and assigning to the later value for a picture element separately stored priority over an earlier separately stored value derived during the selected time period for the same picture element; and (d) at the termination of the selected time period, providing an output video signal comprising said reference frame with the substitution therein of the picture elements of the subsequently arriving frames which are different from those in the reference frame and which are separately stored during the selected time period.
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3. Apparatus for generating from arriving television signals, video signals for displaying simultaneously a succession of images of an object moving over a selectable time period in an otherwise substantially static scene, said apparatus comprising:
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first storage means for storing during the duration of a selected time period a reference frame of video representing a scene at the start of the selected time period; means for comparing picture elements of selected television frames subsequently arriving during the selected time period with corresponding picture elements of said reference frame; means including second storage means for separately storing those picture elements of the selected subsequently arriving frames shown by the comparing means to be measurably different from corresponding picture elements in the reference frame and for assigning to the later value for a picture element separately stored priority over an earlier separately stored value derived during the selected time period for the same picture element; and means coupled to said second storage means for providing at the termination of said selected time period a video signal for display representing at least those picture elements separately stored during said selected time period, the separately stored picture elements providing in the display successive images of said moving object with later images taking precedence over earlier images in the case of overlap of successive images. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. Apparatus for generating from arriving television signals, video signals for displaying simultaneously a succession of images of an object moving over a selectable time period in an otherwise substantially static scene, said apparatus comprising:
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first storage means for storing during the duration of a selected time period a reference frame of video representing a scene at the start of the selected time period; means for comparing picture elements of selected television frames subsequently arriving during the selected time period with corresponding picture elements of said reference frame; means including second storage means for separately storing and assigning to later-arriving picture elements of the selected subsequently arriving frames shown by the comparing means to be different from corresponding picture elements in the reference frame priority over an earlier stored value derived during the selected time period for the same picture element; and means coupled to said second storage means for providing at the termination of said selected time period a video signal for display representing at least those picture elements separately stored during said selected time period, the separately stored picture elements providing in the display successive images of said moving object, with later images taking precedence over earlier images in the case of overlap of successive images.
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16. Method for generating a video signal for displaying simultaneously a succession of images of an object moving over a selectable time period in an otherwise substantially static scene, comprising the steps of:
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(a) storing for the duration of a selected time period a reference frame of video representing said scene at the start of a selected time period; (b) comparing picture elements of selected television frames subsequently arriving during the selected time period with corresponding picture elements of the reference frame; (c) separately storing and assigning to later-arriving picture elements of the selected subsequently arriving frames shown by the comparison to be different from corresponding picture elements in the reference frame priority over an earlier-stored value derived during the selected time period for the same picture elements; and (d) at the termination of the selected time period, providing a video signal for display representing at least those picture elements separately stored during the selected time period.
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Specification