Data driven processor
US4327407A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1979 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Feb 26, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99936
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data driven processor for searching data stored in memory to identify messages or other data containing operator selected keywords containing alpha-numeric or other characters and for performing arithmetic and other functions performed by processors. The processor comprises a plurality of commercially available integrated circuit random access memories (RAMs). The binary words read out of the RAMs are applied to the higher order addressing inputs of the same RAMs. Messages being searched for keywords are applied to the lower order addressing inputs of the same RAMs. A binary word applied to the higher order addressing inputs of the RAM memory selects a block of memory bits with each bit being associated with a different character. Only the memory bit within a selected block of memory bits corresponding to the keyword character being searched for contains a binary word indicating the block of bits for the subsequent keyword character to be searched for. When a character being searched for is detected, the binary word in the corresponding memory location is read out and applied to the higher order memory inputs. This causes the next block of memory bits to be addressed to await rec…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.