Multi-microcomputer system
US4896263A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1988 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | May 26, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F8/654
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
All but one of the microcomputers in a multi-computer system are equipped with a rapid-access read-write memory and a fixed content nonvolatile read-only memory. Each of these read-only memories, however, stores a multiplicity of varieties of one or more sets of data, so that, in the case of a computer system for a motor vehicle engine, the same system can be used in any of a large number of vehicle models. One of the microcomputers of the system has a programmable memory which is programmed at the time of installation to designate the portions of the fixed memories that are to be utilized. When the system is turned on, the programmed memory designation number is stored in the read-write memory of all of the computers of the system, with the result that the designated portion of each fixed read-only memory is always referred to in any computer of the system. It is not important that, when the system is turned off, the memory content of the read-write memories is lost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.