Spatial product sum calculating unit
US4747157A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1986 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Dec 3, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/153
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to an arithmetic which calculates the spatial product sum of each of a plurality of picture element data stored in a frame memory, through utilization of load coefficients with N rows and N columns stored in a coefficient memory. The results of calculation for pieces of picture element data of one row of the frame memory and load coefficients of one row are added to the contents of shift registers corresponding to picture elements. This operation is repeated N times for different rows of the frame memory and different load coefficients. Thus, the spatial product sum calculation is performed at high speed using a small number of multipliers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.