Method for optical computation of sums and differences
US12174655B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2023 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Jun 13, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F55/25
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical numerical computation method obtains operands that have respective values and modulates light sources to output light at amplitudes proportional to the operands. The light output for a given operand depends on whether the operand is positive or negative. The positive operands are output at wavelengths different from the negative operands. For operands that have multiple digits, the digits are separately treated so that the least significant digits are modulated with light sources at one frequency, and the most significant digits in two-digit numbers are modulated at another frequency, with positive and negative operands modulated at different frequencies. The light from the light sources enters a light collection cavity where it is sensed with sensors that generate resultant outputs at values indicative of the sensed light value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.