Variable thresholding circuit for converting an analog signal to a binary signal
US4109211A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1976 |
| Grant date | Aug 22, 1978 |
| Priority date | — |
| Expiry date | Jan 16, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/062
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A variable thresholding circuit for converting an analog signal to a binary signal comprises a comparator to which signals to be converted are applied and a threshold circuit coupled with the comparator in order to provide the threshold level of the comparator, so that the signals applied to the comparator are converted into binary signals in accordance with the threshold level. The threshold level corresponding to the output of the threshold circuit is compensated in accordance with the variations of the levels of the signals applied to the comparator. The threshold level of the comparator is changed to a compensated level when the result calculated from the threshold level and the signals applied to the comparator is smaller than a predetermined value, whereas the threshold level of the comparator is not changed to the compensated one when the result calculated from the threshold level and the signals applied to the comparator is larger than that and the compensation is repeated until the calculated result becomes smaller than the predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.