Dual ported speed up memory in ROM location for engine analyzer
US4903220A · kind A · utility
2Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1988 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Jan 27, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An IBM-compatible computer based engine analyzer includes a RAM memory in a ROM cartridge location. A data acquisition system operates substantially independently of the system microprocessor to acquire engine test signals, convert them to digital form and store them via a register in the RAM memory. The system microprocessor has access to the RAM memory via a buffer for reading and changing the data therein. Control logic regulates access to the RAM memory by the A/D converter and the system microprocessor by controlling operation of the register and the buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.