Filtered light signal control suitable for toys
US5847854A · kind A · utility
97Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1996 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Aug 2, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H30/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A toy method and apparatus is presented which utilizes a filtered signal to control a toy. A number of signal sources are filtered such that they each provide a signal of a specific wavelength(s) or polarization angle. A number of toys contain similar filters, such that the toys provide a mechanical, visual, acoustical, etc., response to reception of a signal of the wavelength(s) for which they contain the filter. In this manner, signal sources which control one toy cannot interfere with another toy, or parts of same toy, during an interactive game.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.