Charge-coupled device serial analog-to-digital converter and associated conversion method
US4275387A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1979 |
| Grant date | Jun 23, 1981 |
| Priority date | — |
| Expiry date | Apr 13, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/361
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A plurality of charge-coupled device shift registers or shift register elements is used to generate a plurality of packets of charge, each proportional to a different reference potential. Using a sense amplifier or comparator, each of the packets of charge is compared, either simultaneously or sequentially, with one or more packets of charge generated by the potential of an analog signal. Signals from the comparator are then supplied to an encoder or a counter to generate a digital signal representative of the analog signal. In one embodiment the plurality of different reference potentials are generated by positioning the shift registers or shift register elements at various locations along a resistance having a potential applied across it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.