Sandra D Rhodes

Address:

513 S Main St, Wake Forest, NC 27587

Phone:

9195567163

VIN:

JTMZD33V275033986

Make:

TOYOTA

Model:

RAV4

Year:

2007

US Patent:

8250273, Aug 21, 2012

Filed:

Sep 14, 2009

Appl. No.:

12/559002

Inventors:

Sreekanth Konireddygari - Durham NC, US
Sandra Rhodes - Wake Forest NC, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 9/48

US Classification:

710269, 710262, 713168

Abstract:

Encryption of interrupt vectors and authentication of device drivers prevents unauthorized modules from interfering with an interrupt handler. An operating system may encrypt an interrupt vector for a PCI device, initializing a Local Interrupt Controller of a CPU with the key to enable decryption of the interrupt vector, initializing a redirection table on an I/O Interrupt Controller of the CPU with the encrypted interrupt vector, and initializing the PCI device with an encrypted MSI vector for subsequent use in an interrupt request. The PCI device may raise an interrupt that can only be decrypted by the Local Interrupt Controller and used be used by the processor to handle the interrupt. The operating system may also authenticate a driver before executing a request to register, deregister or change an interrupt handler. An authentication code is sent from the OS to the device driver for use in any request. The request is executed only if the operating system determines that the authentication code in the request matches the authentication code stored by the operating system for that device driver.

US Patent:

20100064080, Mar 11, 2010

Filed:

Sep 11, 2008

Appl. No.:

12/208640

Inventors:

Mehul Shah - Austin TX, US
Ryuji Orita - Redmond WA, US
Sandra D. Rhodes - Wake Forest NC, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY

International Classification:

G06F 13/42

US Classification:

710105

Abstract:

The present disclosure is directed to a method for balancing latency versus bandwidth trade-offs in packet transmission utilizing PCI-Express. The method may comprise identifying at least one system element along a path of a packet to be transmitted; determining and storing an optimum payload size for each one of the at least one system element; configuring a Max Payload Size parameter for each one of the at least one system element, wherein the Max Payload Size parameter is configured based on the optimum payload size for each one of the at least one system element.

US Patent:

61414034, Oct 31, 2000

Filed:

Aug 13, 1997

Appl. No.:

8/910893

Inventors:

Charles Bruce Dillon - Morrisville NC
Frank Westbrook Dain - Chapel Hill NC
Laurence Victor Marks - Raleigh NC
Sandra Rhodes - Wake Forest NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04M 1100

US Classification:

379 9331

Abstract:

When two 56K server modems communicate with one another over the public switched telephone network, they signal each other so that they communicate data to each other in a digital pass-through mode whereby essentially there is a direct digital connection between the two modems. This is accomplished by using extended ITU-T Recommendation V. 8 protocols.

US Patent:

20170060807, Mar 2, 2017

Filed:

Aug 25, 2015

Appl. No.:

14/835088

Inventors:

- New Tech Park, SG
DUSTIN PATTERSON - Durham NC, US
SANDRA RHODES - Wake Forest NC, US

International Classification:

G06F 13/42
G06F 13/374
G06F 13/40

Abstract:

For optimizing expansion devices on a computer expansion bus based on real-time flow control data, a system, apparatus, method, and computer program product are disclosed. The apparatus includes a configuration module that initializes a plurality of expansion bus registers, each expansion bus register associated with one of the plurality of expansion bus slots, a packet module that monitors flow control packets on the expansion bus, a flow control module that calculates flow control data from the flow control packets, the flow control data relating to the plurality of expansion devices, and a register module that writes flow control data to the plurality of expansion bus registers. The apparatus may further includes an optimization module that calculates an arrangement of the plurality of expansion devices, based on the flow control data, to maximize expansion bus throughput.