Anthony A Walker

US Patent:

6546492, Apr 8, 2003

Filed:

Mar 26, 1999

Appl. No.:

09/277434

Inventors:

Anthony Dean Walker - Rougemont NC
John S. Petty - Chapel Hill NC

Assignee:

Ericsson Inc. - Research Triangle Park NC

International Classification:

G06F 124

US Classification:

713200, 713201

Abstract:

A system and method for updating software for a remote unit over a network is disclosed herein. The system and method includes the remote unit, an authentication server and an update server. The remote unit may have a flasher host for communicating over the network and for transmitting commands to the remote unit. The system and method allows for the verification of a request message from the remote unit, and a response from the authentication server. The response message to the remote unit from the authentication server will contain an decryption key to decrypt the update file that will be sent by the update server. Such an authentication process prevents rogue programs from being sent to the remote unit thereby decreasing the potential for cellular fraud.

US Patent:

7240087, Jul 3, 2007

Filed:

Jun 27, 1997

Appl. No.:

08/883710

Inventors:

Anthony Dean Walker - Rougemont NC, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 15/16

US Classification:

709200, 714749

Abstract:

A communication network implements a timing system that closely approximates network response times so that information may be transmitted between two data processing systems within the network in a timely and efficient manner. During operation of the communication network, a sending data processing system sends query data to a receiving data processing system. A response timer within the sending data processing system is initialized to track the query operation. If the receiving data processing system provides a response to the sending data processing system before the response timer expires, the timing implemented for data communications is proper for the communication network. However, if the receiving data processing system fails to provide a response within a time specified by the response timer, the transmitting data processing system resends a query frame. Subsequently, the sending data processing system in the communication network gradually increases a response time until the time measured by the response timer does not expire before a response is received by the sending data processing system.

US Patent:

20100057427, Mar 4, 2010

Filed:

Sep 4, 2008

Appl. No.:

12/204047

Inventors:

Anthony Dean Walker - Rougemont NC, US

International Classification:

G06F 9/38
G06F 9/00
G06F 12/08

US Classification:

703 17, 712234, 711125, 711E12017, 712E09045

Abstract:

A processor simulation environment includes a processor execution model operative to simulate the execution of processor instructions according to the characteristics of a target processor, and branch override logic. When the processor execution model decodes a branch instruction, it requests a branch directive from the branch override logic. In response to the request, the branch override logic provides a branch directive that resolves the branch evaluation. The request may include a branch instruction address. The branch override logic may index an execution trace of instructions executed on a processor compatible with the target processor, using the branch instruction address. The branch directive may include an override branch target address, which may be obtained from the instruction trace, or otherwise calculated by the branch override logic. In this manner, accurate program execution order may be simulated in a simulation environment in which complex I/O is not modeled.

US Patent:

20110119044, May 19, 2011

Filed:

Aug 26, 2008

Appl. No.:

12/198595

Inventors:

Anthony Dean Walker - Rougemont NC, US

International Classification:

G06F 9/455

US Classification:

703 20

Abstract:

An efficient, cycle-accurate processor execution simulator models a target processor by executing a program execution image comprising instructions having run-time dependencies resolved by execution on an existing processor compatible with the target processor. The instructions may have been executed upon a processor in an I/O environment too complex to model. In one embodiment, the simulator executes instructions that were directly executed on a processor. In another embodiment, a markup engine alters a compiled program image, with reference to instructions executed on a processor, to remove run-time dependencies. The marked up program image is then executed by the simulator. The processor execution simulator includes an update engine operative to cycle-accurately simulate instruction execution, and a communication engine operative to model each communication bus of the target processor.

US Patent:

54974607, Mar 5, 1996

Filed:

Jun 20, 1994

Appl. No.:

8/262197

Inventors:

Warren D. Bailey - Pittsboro NC
Erik L. Dixon - Durham NC
Michele M. Ferris - Cary NC
Henry M. Garrett - Raleigh NC
Gregory F. Paussa - Cary NC
Anthony D. Walker - Durham NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1134

US Classification:

39518315

Abstract:

A system (such as a multiprotocol LAN adapter) for use in a workstation or other processing machine automatically determines the type of network to which the workstation is connected and for automatically determines the type of physical medium to which the workstation is attached. The system has a plurality of different physical ports for supporting various available physical media over which network data may be transmitted. For example, the system may have a port for connecting to shielded twisted pair (STP) wiring, a port for connecting to unshielded twisted pair (UTP) wiring, a port for connecting to coaxial cable, and a port for supporting the Attachment Unit Interface (AUI). Connected to each of these physical ports are various network interface devices for supporting the various available networking protocols, e. g. , token ring, Ethernet, etc. Logic circuitry and control software are connected to the network interface devices.

US Patent:

55553770, Sep 10, 1996

Filed:

Dec 20, 1993

Appl. No.:

8/168613

Inventors:

Kenneth J. Christensen - Apex NC
Steven E. Polge - Cary NC
Anthony D. Walker - Durham NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1300

US Classification:

39520011

Abstract:

A data communications system including a network and a number of data communication stations attached to the network wherein each of the stations includes a processor, a memory, a bus, and a communications adaptor for operatively connecting the processor and memory to the network, the communications adaptor including a means for monitoring network activity on a real time basis and enabling or disabling data compression when network activity exceeds a predetermined threshold.

US Patent:

53196333, Jun 7, 1994

Filed:

Aug 17, 1992

Appl. No.:

7/931234

Inventors:

Joel E. Geyer - Cary NC
Bradley S. Trubey - Raleigh NC
Anthony B. Walker - Durham NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 1226
H04L 1242

US Classification:

370 17

Abstract:

A network topology generator identifies addresses and locations of multiple stations connected to a single access port of a communications network by determining a pair of identifiable network units between which the multiple stations are connected, sequentially deactivating access ports between the pairs of identifiable network units and issuing selected message frames to the stations whose location is unknown. The message frames returning from said stations are monitored to detect the state of the Address Recognized (AR) bit. If the bit is set, this indicates that the station is still on the network. Therefore, the deactivate/polling routine is repeated until the AR bit in a returned message is in an "off" state, indicating that the station is not on the network and is connected to the last deactivated port.