Baseball-strike indicator and trajectory analyzer and method of using same
US4545576A · kind A · utility
Inventor
Key dates
| Filing date | Aug 13, 1983 |
| Grant date | Oct 8, 1985 |
| Priority date | — |
| Expiry date | Aug 13, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2220/806
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An apparatus and method to compute the trajectory of a moving object by remote, non-interfering sensors. The particular application computes the trajectory of a pitched baseball throughout its flight, including the ball's trajectory as it passes in the vicinity of a three-dimensional strike zone. The apparatus includes two pairs of video cameras, an alignment mechanism, video-storage means, a digitizer, a computer, output devices, and an operator's console. This apparatus is required to identify the ball, compute its position in three dimensions as a function of time, compute ball speed trajectory, and present the output via computer graphics to present the viewer with essentially any desired view of the pitch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.