Motion detecting circuit utilizing inter-frame difference signals of successive fields
First Claim
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1. A motion detecting circuit for detecting the motion of an object in an interlaced television signal comprising:
- an input terminal to which the interlaced television signal is applied;
a plurality of memories connected in series to said input terminal, the sum of capacities of said plurality of memories corresponding to at least three fields;
a first circuit for calculating at least two inter-frame difference signals of successive fields from said plurality of memories; and
a second circuit for determining the motion of said object by utilizing the output of said first circuit.
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Abstract
A motion detecting circuit suitable for detecting object-movement on an interlaced TV signal includes at least three field memories, subtracters, absolute circuits and an adder circuit. The motion detector evaluates object-movement by accumulating frame difference signals between adjacent fields.
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Citations
10 Claims
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1. A motion detecting circuit for detecting the motion of an object in an interlaced television signal comprising:
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an input terminal to which the interlaced television signal is applied; a plurality of memories connected in series to said input terminal, the sum of capacities of said plurality of memories corresponding to at least three fields; a first circuit for calculating at least two inter-frame difference signals of successive fields from said plurality of memories; and a second circuit for determining the motion of said object by utilizing the output of said first circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification