Signal handling system for minimizing dropout effect
US4041453A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1974 |
| Grant date | Aug 9, 1977 |
| Priority date | — |
| Expiry date | Nov 14, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1809
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for handling pulse encoded signals includes several parallel signal paths to carry pulses on which a signal has been encoded. The encoding is based on a predetermined amplitude value, or weight, for each pulse, and each signal path receives all pulses having the same weighting factor. A switching system is provided to switch the signals received on the various paths to different paths in a determinable order at a repetition rate commensurate with the pulse encoding repetition rate. The signals are then transmitted along the signal paths and are then switched back to the original order for pulse decoding. If pulse bits are lost in the second path, an interpolation may be made to provide a reasonable restoration of the signal to minimize the dropout effect. The switching of signals back to the original order virtually eliminates the possibility of having two successive dropouts of the same pulse weight in the signals to be decoded, and thus eliminates the possibility of having no standard of interpolation in the reconstructed signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.