System and method for determining a spin axis of a sports ball
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United States of America Patent
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Sep 20, 2022
Grant Date -
Feb 25, 2021
app pub date -
Oct 21, 2020
filing date -
Mar 13, 2018
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Abstract
A system determining a spin axis of a ball includes a radar transmitting a signal into a target area. The radar includes a minimum of three receivers arranged so that two pairs of receivers are not co-linear. The system also includes a Processing Unit (“PU”) receiving data from the radar and determining a radar range of frequencies received at a point in time corresponding to differing velocities relative to the radar of different portions of the ball as the ball is spinning. PU divides the radar frequency range into a plurality of frequency components and calculating, for each of the frequency components, an angular position associated therewith. PU identifies as a projection of the spin axis in a plane perpendicular to a line of sight from the radar to the ball, a line perpendicular to a line represented by the determined angular positions.
First Claim
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- 15 United States
- 10 France
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Patent Owner(s)
- TRACKMAN A/S
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- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Mackeprang, Kasper | Vedbaek, DK | 4 | 10 |
Tuxen, Fredrik | Horsholm, DK | 60 | 486 |
Ungstrup, Michael | Vedbaek, DK | 47 | 861 |
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