Programmable delay line using laser diode taps
US5641954A · kind A · utility
7Cited by
12References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Aug 17, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/33
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A series of taps are created within an acousto-optic cell by imaging an array of LEDs within the cell. The illuminated tap regions are selectively changed by energizing selected LEDs. The electrical input signal produces a travelling acoustic wave within the cell and when the wave crosses illuminated tap regions, electrical output signals are produced having delays proportional to the positions of illuminated LEDs in the array. The magnitude of the output signal is proportional to the LED light intensity which is varied to produce a weighted output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.