Method and hardware apparatus for implementing an N-sample median filter
US6078213A · kind A · utility
4Cited by
1References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1997 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Nov 7, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0263
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A hardware apparatus for determining a median sample from n input samples is disclosed. The hardware apparatus includes n(n-1)/2 comparator circuits. The n(n-1)/2 comparator circuits compare each input sample with every other input sample. The comparator circuits are coupled to n-1 median selector circuits. Each median selector circuits selects a particular input sample as the median sample if the number of greater-than or equal-to comparisons for that particular input sample equals the number of less-than comparisons for that particular input sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.