Inventor
PURDHAM DAVID M
US14 patents
⚠️ This page may combine multiple inventors who share the name “PURDHAM DAVID M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNISYS CORP
9 patentsUS5701313ADec 23, 1997
Method and apparatus for removing soft errors from a memory
UNISYS CORP76 citations95
US5666371ASep 9, 1997
Method and apparatus for detecting errors in a system that employs multi-bit wide memory elements
UNISYS CORP33 citations92
US5434871AJul 18, 1995
Continuous embedded parity checking for error detection in memory structures
UNISYS CORP20 citations92
US4926426AMay 15, 1990
Error correction check during write cycles
UNISYS CORP32 citations91
US4953131AAug 28, 1990
Unconditional clock and automatic refresh logic
UNISYS CORP26 citations89
US5822766AOct 13, 1998
Main memory interface for high speed data transfer
UNISYS CORP11 citations74
US5450426ASep 12, 1995
Continuous error detection using duplicate core memory cells
UNISYS CORP10 citations74
US5970253AOct 19, 1999
Priority logic for selecting and stacking data
UNISYS CORP12 citations73
US4918696AApr 17, 1990
Bank initiate error detection
UNISYS CORP11 citations73
MARVELL INT LTD
4 patentsUS7080188B2Jul 18, 2006
Method and system for embedded disk controllers
MARVELL INT LTD17 citations92
US7457903B2Nov 25, 2008
Interrupt controller for processing fast and regular interrupts
MARVELL INT LTD20 citations90
US7870346B2Jan 11, 2011
Servo controller interface module for embedded disk controllers
MARVELL INT LTD5 citations62
US7870320B1Jan 11, 2011
Interrupt controller for prioritizing interrupt requests in an embedded disk controller
MARVELL INT LTD2 citations60