DOS based application supports for a controllerless modem
US6230118A · kind A · utility
23Cited by
21References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1997 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Jun 30, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/105
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
DOS application programs are accommodated when using a controllerless modem by providing a virtual device driver. The virtual device driver emulates UART to UART communications and handles interrupts by the DOS applications and by a hardware port managed by the controllerless modem. In one implementation, the virtual device driver shares a communications interface in common with 32-bit applications. In a communication system environment, DOS applications can participate in modem to modem communications with remote DTEs and with other devices using the services of the virtual device driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.