Single phase signal processing system utilizing charge transfer devices
US4139783A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1977 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | Feb 16, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H15/02
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a charge transfer transversal filter a substrate of one conductivity type semiconductor material is provided. A first plurality of electrodes insulatingly overlie the substrate, each split into a first and a second part with a small gap therebetween. A second plurality of electrodes insulatingly overlie the substrate, each spaced between the adjacent electrodes of the first plurality. A first clock line is connected to the first parts of the first plurality of electrodes and a second clock line is connected to the second parts of the first plurality of electrodes. A fixed d-c voltage is applied to the first and second clock lines. A voltage pulsating above and below the fixed d-c voltage is applied to the second plurality of electrodes. Means are provided for introducing packets of charge representing sequential samples of an analog signal into the filter. Means are provided for deriving from the first and second lines an output which is representative of the difference in charge underlying the first and second parts of the first plurality of electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.