Apparatus for detecting moving ball
US5976038A · kind A · utility
81Cited by
15References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Apr 22, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2243/007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system is provided with a directional antenna having first and second antenna patterns oriented around an antenna boresight direction. The antenna boresight is oriented in a direction corresponding to a play determinative line on a playing field. Signals are emitted firm a playing object, used as a ball and detect using the two antenna patterns. Comparison of the detected signals provides an output indication when the playing object crosses the play determinative line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.