Digital frequency divider
US4991188A · kind A · utility
16Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1988 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Dec 12, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K23/68
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital frequency divider capable of providing output pulses of frequency f.sub.out related by Y/X to the frequency of the input pulses f.sub.in, where X and Y are positive whole numbers and O<Y/X.ltoreq.1. The circuit is particularly suited for high frequency digital applications. The X and Y values may be fixed or individually variable. Truncation errors decrease with time to provide a best estimate output frequency. In a preferred arrangement, iterative summations of residual and incremental values are latched and recycled as feedback in synchronism with the rate of the input frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.