Industrial process control system
US4396977A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1980 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Jun 16, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/36168
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An industrial process control system in accordance with the present invention includes a plurality of device controllers connected together through a common buss with each device controller connected to an associated controlled device(s) that effect process control. A computer-aided system interface for controlling the overall system includes a visual display device in the form of a multi-color CRT and a graphic input device in the form of a transparent touch-responsive panel that overlies the CRT display screen. Computer generated symbols representing the controlled devices are displayed on the CRT screen to define touch-responsive target areas. When an appropriate target area is touched by a human operator, a signal, such as a command signal, is generated to cause the controlled device whose symbol is displayed in the designated target area to respond, with this response being then indicated by a change in the device symbol being displayed on the screen. Other features include generation of a "hit" display to indicate the last coordinates on the display screen touched by the operator, a two-step execute command sequence for entering high priority commands into the system, and the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.