公开(公告)号：JP2002049573A

公开(公告)日：2002-02-15

申请号：JP2001111177

申请日：2001-04-10

Applicant: IBM

Inventor： HOLLAND WILLIAM G ,  NOEL FRANCIS E JR ,  SONNEPOLLEY CHARLES J

IPC: G06F13/12 ,  G06F12/10 ,  G06F13/00 ,  G06F13/14 ,  G06F13/16 ,  G06F15/18 ,  H04L12/28 ,  H04L12/56

Abstract: PROBLEM TO BE SOLVED: To provide hardware which actualize main functions of memory management so as to greatly improve the performance of a computer system. SOLUTION: In this computer system, a network processor 171 arranged between a central processor 110 and support peripheral subsystems 172, 174, 175, and 176, and among peripheral subsystems processes the addressing of a memory space.

公开(公告)号：CA1130409A

公开(公告)日：1982-08-24

申请号：CA365432

申请日：1980-11-25

Applicant: IBM

Inventor： NOEL FRANCIS E JR ,  STILWELL GEORGE R JR ,  KOLODZEY JAMES S

IPC: H04L5/16 ,  H04L25/22

Abstract: HALF-DUPLEX/SIMPLEX DIGITAL SIGNAL CONVERTER A solid state circuit, which serves as a twin simplex/ half-duplex converter, includes a triple input NAND gate. The output of the NAND gate is connected directly to the outgoing simplex conductor. Signals on the incoming simplex conductor are applied to the three inputs of the NAND gate through separate signal paths which introduce different delays. One signal path introduces an intermediate delay before applying the incoming signal to the NAND gate in an inverted form. The half-duplex line is connected to this signal path. While incoming signals are applied at all three inputs to the NAND gate as well as to the half-duplex line, a lack of coincidence at the inputs prevents any incoming signal from passing through the converter to the outgoing simplex line. RA9-79-005

公开(公告)号：CA2479166A1

公开(公告)日：2003-10-09

申请号：CA2479166

申请日：2002-11-20

Applicant: IBM

Inventor： CHALLENER DAVID C ,  KUMP GARRY M ,  SCHALES DOUGLAS L ,  SAFFORD DAVID R ,  NOEL FRANCIS E JR ,  VAN DOORN LEENDERT P

IPC: H04L12/26 ,  H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04M1/68 ,  H04W12/12

Abstract: Methods, apparatus and program products which monitor wireless access points (12,16) through which data can be exchanged with a network (10), identify an unauthorized access point (16), and respond to monitored data flow in a variety of manners including determining the location of the identified unauthorized access point, establishing filtering, and controlling accountin g for access services.

公开(公告)号：BR0215667A

公开(公告)日：2006-06-06

申请号：BR0215667

申请日：2002-11-20

Applicant: IBM

Inventor： CHALLENER DAVID C ,  KUMP GARRY M ,  NOEL FRANCIS E JR ,  SCHALES DOUGLAS L ,  DOORN LEEDERT P VAN ,  SAFFORD DAVID R

IPC: H04L12/26 ,  H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04M1/68 ,  H04W12/12 ,  G06F12/14

Abstract: Methods, apparatus and program products which monitor wireless access points ( 12, 16 ) through which data can be exchanged with a network ( 10 ), identify an unauthorized access point ( 16 ), and respond to monitored data flow in a variety of manners including determining the location of the identified unauthorized access point, establishing filtering, and controlling accounting for access services.