Analog-digital optical conversion process and apparatus
US4502037A · kind A · utility
29Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1982 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Jun 25, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F7/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention relates to an analog-digital coder incorporating n channels corresponding to the bits of the output word. Each channel comprises at least one light intensity modulator. As a function of the positive or negative half-cycles of the output signal of channel i+1, a supplementary phase shift of +.DELTA..PHI. or -.DELTA..PHI. is introduced onto the output signal of channel i, with /.DELTA..PHI./<.pi./2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.