Data processing system for transmitting data between a host processor and an I/O device
US5204950A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 28, 1990 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Nov 28, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/126
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing system having a host unit generating a command and address, a local channel control device which is connectable to the host unit for receiving the command and the address, a remote channel control device, and a control unit connected to the remote channel control device. The local channel control device generates an initial status responsive to the command and address from the host unit, and sends the initial status to the host unit. The remote channel control device and the control unit likewise receive the command and address, and the control unit controls an I/O device responsive and the command and address. The host unit responds to the initial status to control the connection and disconnection between the local channel control device and the host unit. Connection and disconnection between the remote channel control device and the control unit can also be controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.