Data collection terminal interrupt structure
US4669057A · kind A · utility
8Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1983 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Oct 3, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K17/0022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data collection terminal includes a microprocessor, a memory and a number of devices coupled to a system bus. An interrupt controller processes the device interrupt requests by sending a vector address out on the system bus to enable the microprocessor to branch to a microprogram to process the interrupt request. Apparatus is provided to receive the vector address to generate an interrupt clear signal for those interrupts which are transitory in nature. Typical examples are a document being inserted in a device or a card seated in a device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.