Active infrared sensor
US6919567B2 · kind B2 · utility
21Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2003 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Sep 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/183
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An optical transmitter is equipped with a transmitted pulse modulator at which a plurality of optical transmission patterns have previously been stored. The respective stored optical transmission patterns have mutually different ratios between infrared pulse ON times and OFF times. The optical output of infrared signal(s) transmitted from an optical transmitter is made variable as a result of the fact that infrared pulse(s) output during infrared output period(s) is/are output in accordance with an optical transmission pattern which is selected from among the plurality of optical transmission patterns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.