Multi-channel position detection system
US4529315A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1983 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | Jan 28, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K13/0812
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention is a multi-channel position detection system which utilizes several separate emitters and a single photodetector to, for example, align a multi-lead component manipulator with a predetermined location in a printed circuit board. An oscillator circuit generates a modulated signal for each emitter and a multiplier circuit develops an output signal based upon the oscillator output and the photodetector output. The photodetector provides an output responsive to the emitter signal as attenuated by the circuit board location relative to the emitter. When the lead hole of the circuit board is aligned with the emitter and photodetector minimum attenuation of the signal occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.