Method and apparatus for detecting a signal
US5459706A · kind A · utility
16Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1994 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Mar 31, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0938
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Outputs of first and second photodetectors are supplied to first and second normalizing circuits and are also added by an adding circuit. An output of the adding circuit is supplied to the normalizing circuits. By the output supplied from the adding circuit to the normalizing circuits, the outputs supplied from the photodetectors to the normalizing circuits are normalized. A subtraction is performed between the outputs of the normalizing circuits by a subtracting circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.