Non-orthogonal coding techniques for optical sensing
US9430097B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2013 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Aug 29, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04162
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A processing system includes a transmitter module, a receiver module, and a determination module. The transmitter module includes drives a first optical transmitter with a first optical coded signal based on a first code, and drives a second optical transmitter with a second optical coded signal based on a second code. The first code and the second code are non-orthogonal, and the first optical transmitter and the second optical transmitter transmit at overlapping times. The receiver module receives a resulting signal that includes effects corresponding to the first optical coded signal and the second optical coded signal. The determination module determines a first measurement between the first optical transmitter and the optical receiver, determines a second measurement between the second optical transmitter and the optical receiver, and determines positional information for an input object based on the first measurement and the second measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.