Inventor
CHISHOLM DOUGLAS R
US10 patents
⚠️ This page may combine multiple inventors who share the name “CHISHOLM DOUGLAS R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
9 patentsUS5014186AMay 7, 1991
Data-processing system having a packet transfer type input/output system
IBM113 citations95
US5276814AJan 4, 1994
Method for transferring information between main store and input output bus units via a sequence of asynchronous bus and two synchronous buses
IBM63 citations94
US5003465AMar 26, 1991
Method and apparatus for increasing system throughput via an input/output bus and enhancing address capability of a computer system during DMA read/write operations between a common memory and an input/output device
IBM90 citations94
US4246637AJan 20, 1981
Data processor input/output controller
IBM88 citations92
US5199106AMar 30, 1993
Input output interface controller connecting a synchronous bus to an asynchronous bus and methods for performing operations on the bus
IBM42 citations90
US5131082AJul 14, 1992
Command delivery for a computing system for transfers between a host and subsystem including providing direct commands or indirect commands indicating the address of the subsystem control block
IBM29 citations90
US5509124AApr 16, 1996
Coupled synchronous-asychronous bus structure for transferring data between a plurality of peripheral input/output controllers and a main data store
IBM18 citations80
US5455916AOct 3, 1995
Method for performing inter-unit data transfer operations among a plurality of input/output bus interface units coupled to a common asynchronous bus
IBM19 citations80
US5119480AJun 2, 1992
Bus master interface circuit with transparent preemption of a data transfer operation
IBM4 citations57