Christopher D Mackey

US Patent:

6343207, Jan 29, 2002

Filed:

Nov 3, 1998

Appl. No.:

09/184709

Inventors:

Clifford Hessel - Rochester NY
Paul E. Voglewede - Churchville NY
Michael E. Kreeger - Mountain View CA
Christopher D. Mackey - Spencerport NY
Scott E. Marks - Penfield NY
Louis M. Orsini - Fairport NY
John E. Gorton - Rochester NY

Assignee:

Harris Corporation - Melbourne FL

International Classification:

H04B 140

US Classification:

455 86, 455 84, 455552

Abstract:

A system and method for providing a field configurable radio frequency communication system including an intermediate frequency digital signal processing circuit therefor. The intermediate frequency digital signal processing circuits includes digital transmitter and receiver circuit paths, a digital baseband circuit, control registers and an interface circuit. The transmitter and receiver circuit paths and the baseband circuits include digital processing circuits that are configurable by commands provided to the control register via the interface circuit to select the transmitter or receiver mode of operation, to select the signaling scheme of waveform employed, to configure the signal processing functions of the transmitter or receiver circuit paths, and to select the use of any of a plurality a baseband signal processing functions.

US Patent:

6812789, Nov 2, 2004

Filed:

Jul 18, 2002

Appl. No.:

10/197431

Inventors:

Christopher David Mackey - Spencerport NY
Brian Christopher Boorman - Honeoye NY
Thomas Daniel O Brien - Honeoye Falls NY

Assignee:

Harris Corporation - Melbourne FL

International Classification:

H03G 320

US Classification:

330129, 330132

Abstract:

A method and apparatus for maintaining approximately constant gain of an RF power amplifier includes a digital control module for modifying gain parameters of the power amplifier to provide a constant fixed power gain over the entire frequency range of operation. The digital control module compares stored frequency response parameters, which are indicative of the inherent closed-loop gain of the power amplifier, with the current selected gain and carrier frequency setting to generate a digital gain control value. The digital gain control value is used to modify a detected input RF envelope in the power amplifier analog loop. The modified input envelope is compared with an envelope of the transmitted RF signal to adjust the gain of the power amplifier. Optionally, the detected RF input envelope may be sampled to digitally compensate for variations in the RF input signal.

US Patent:

7123894, Oct 17, 2006

Filed:

Dec 16, 2002

Appl. No.:

10/319622

Inventors:

Clifford Hessel - Rochester NY, US
Christopher D. Mackey - Spencerport NY, US

Assignee:

Harris Corporation - Melbourne FL

International Classification:

H04B 1/10

US Classification:

455303, 375349, 375355, 455311

Abstract:

A digital radio frequency receiver capable of receiving RF signals at a plurality of signal strengths thereby extending the dynamic range of the receiver without introducing a control loop while allowing a stable gain control algorithm to be implemented in software is described. Various embodiments of a digital radio receiver process a range of signals outside normal analog to digital converter capabilities and bypass the delays resulting from gain control loops.

US Patent:

7904711, Mar 8, 2011

Filed:

Oct 24, 2007

Appl. No.:

11/877720

Inventors:

Christopher D. Mackey - Spencerport NY, US
Brian Boorman - Honeoye NY, US

Assignee:

Harris Corporation - Melbourne FL

International Classification:

H04L 29/06

US Classification:

713151

Abstract:

A scalable internet protocol (IP) encryption system includes a cryptographic unit that processes sensitive data for packet encryption/decryption and data authentication. A first processing unit with an optional IP Layer hardware accelerator includes a data processing subsystem that processes sensitive data and forwards the data to the cryptographic unit for encryption and data authentication. A management subsystem is operative with the cryptographic unit for configuring IP networking functions and distributing network configuration information to the data processing subsystem through the cryptographic unit. Data processing is separated from management and control functions at the data processing and management subsystems. A second processing unit with an optional IP Layer hardware accelerator receives the encrypted data from the cryptographic unit and processes the encrypted data for IP packet routing, fragmentation and reassembly and receives network configuration information from the management subsystem via the cryptographic unit.

US Patent:

7937596, May 3, 2011

Filed:

Aug 30, 2007

Appl. No.:

11/847484

Inventors:

Christopher D. Mackey - Spencerport NY, US
Mark Padrnos - North Chili NY, US

Assignee:

Harris Corporation - Melbourne FL

International Classification:

G06F 11/30
G06F 12/14
G06F 1/26
G06F 1/32
H04L 9/00

US Classification:

713194, 713320, 380277

Abstract:

A method is provided for protecting embedded cryptographic processing circuits (), software and data, contained within electronic equipment. The method involves monitoring with a first processing device () embedded in the electronic equipment parameter values generated by sensors () provided in the electronic equipment. The method also involves evaluating with the first processing device each of the parameter values to determine if it falls within a predetermined range of acceptable values. The method further involves using a modified operating profile in the first processing device to perform the monitoring or evaluating step if one or more of the parameter values is determined not to be within the predetermined range. The method also involves selecting the operating profile to include defined variables selected from the group consisting of the predetermined ranges of acceptable values, the parameter values that are evaluated, and a rate at which the parameter values are evaluated.

US Patent:

8218574, Jul 10, 2012

Filed:

May 6, 2008

Appl. No.:

12/115567

Inventors:

Christopher D. Mackey - Spencerport NY, US
Duncan G. Harris - Webster NY, US
Michael T. Kurdziel - Rochester NY, US

Assignee:

Harris Corporation - Melbourne FL

International Classification:

H04J 3/24

US Classification:

370474, 370392, 380255

Abstract:

A scalable packet analyzer receives data packets from a data packet source for packet analysis and includes a plurality of policy engine arrays, each having a plurality of packet analysis microengines. A policy algorithm loader module is operative with each packet analysis microengine for loading a policy algorithm to each packet analysis microengine such that each packet analysis microengine analyzes specific sections of the data packet in parallel within each policy engine array based on the applied policy algorithm to obtain data about the data packet for further data packet processing.

US Patent:

8299803, Oct 30, 2012

Filed:

May 28, 2010

Appl. No.:

12/789543

Inventors:

Christopher D. Mackey - Spencerport NY, US
Scott E. Bartholomew - Webster NY, US
Duncan G. Harris - Webster NY, US

Assignee:

Harris Corporation - Melbourne FL

International Classification:

G01R 31/04
G01R 31/08

US Classification:

324538

Abstract:

A monitoring system for connector pins exposed to conductive/corrosive fluids and/or corrosive environments includes a first sensing portion having a pin monitoring section configured to measure a pin current flow of at least one conductor pin, and transfer a first signal. A second sensing portion produces a second signal indicating by a contactless determination the presence of a fastener providing physical connection between an interface member and a component. A decision logic device receives the first and second signals, compares the pin current flow to a predetermined range of values, and isolates electrical power to the conductor pin when the first signal indicates the pin current flow is outside the predetermined range of values. A sensor body created of a non-ferrous material and connected to the component includes a first insert member having the conductor pin and a second insert member defining a sensor sensing proximal presence of the fastener.

US Patent:

8364976, Jan 29, 2013

Filed:

Mar 25, 2008

Appl. No.:

12/054657

Inventors:

Christopher D. Mackey - Spencerport NY, US
Duncan G. Harris - Webster NY, US
Michael D. Stevens - Avon NY, US
Scott E. Bartholomew - Webster NY, US

Assignee:

Harris Corporation - Melbourne FL

International Classification:

H04L 29/06

US Classification:

713189, 439119, 439225, 43962021

Abstract:

A pass-through adapter includes an adapter body having at least two connector pin interfaces, with one configured for coupling to an external device such as a communications device. Each connector pin interface includes a plurality of connector pins, including a plurality of pass-through connector pins operative with each other for in-line, pass-through signaling when the pass-through adapter is coupled to the external device. A crypto ignition key (CIK) circuit is contained within the adapter body and connected to at least one of the connector pins to provide a secure mode of operation for the external device.