BRYAN BUCHANAN
Pilots at 99 Ave Ct, Gig Harbor, WA
License number
Washington A3877330
Issued Date
Aug 2016
Expiration Date
Aug 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
5115 99Th Avenue Ct NW, Gig Harbor, WA 98335
Professional information
Dc-To-Dc Switching Power Supply Utilizing A Delta-Sigma Converter In A Closed Loop Controller
US Patent:
5677618, Oct 14, 1997
Filed:
Feb 26, 1996
Appl. No.:
8/607031
Inventors:
Terri S. Fiez - Pullman WA
Gregory M. Cooley - Dallas TX
Bryan Buchanan - Gig Harbor WA
Gregory M. Cooley - Dallas TX
Bryan Buchanan - Gig Harbor WA
Assignee:
The Boeing Company - Seattle WA
Washington State University Research Foundation - Pullman WA
Washington State University Research Foundation - Pullman WA
International Classification:
G05F 156
US Classification:
323282
Abstract:
A DC-to-DC switching power supply (12) receives a DC biased power signal at a first input (14), a control signal at its control input (16) and produces an output DC voltage at its output terminal (20). A power supply controller (30) compares the produced output signal V. sub. out with an input reference signal V. sub. ref. The reference signal is an analog signal which may be produced via digital-to-analog converter (34) which converts a digital input command into a corresponding analog signal V. sub. ref. The resulting error signal is then passed through a proportional gain block 36 and an integral gain block (38). A signal proportional to the differential of the output voltage is passed through a differential gain block (44). The outputs from the proportional gain block (36) integrator gain block (38) differential gain block (44) are summed in the second summer (40) and applied as the input to a delta-sigma converter (42). The output from delta-sigma (42) then constitutes a fixed-width pulse stream of predetermined sequence such that, when applied to the control input (16) of the switching power supply (12), the power supply produces a DC output signal V. sub.
Hardware/Software Lock Secure Linkage Between Algorithmic Decision Process And Critical System Function Execution
US Patent:
6612994, Sep 2, 2003
Filed:
Mar 8, 2001
Appl. No.:
09/802321
Inventors:
Joseph M. Bocek - Seattle WA
Bryan Buchanan - Gig Harbor WA
Tony Harrington - Bellevue WA
Bryan Buchanan - Gig Harbor WA
Tony Harrington - Bellevue WA
Assignee:
Cardiac Pacemakers, Inc. - St. Paul MN
International Classification:
A61B 502
US Classification:
600508
Abstract:
An improved protection mechanism to protect from unintended execution of critical tasks operates, in one example embodiment, by receiving a request to start a task by a first process. The first process informs a second process of running an algorithm to verify the legitimacy of the received request to determine the need to start the task. The second process stores the information regarding the starting the algorithm by the first process. The first process runs the algorithm to verify the legitimacy of the received request, and conveys an outcome of the verification to the second process. The second process enables the start of the task by the first process based on the outcome of the verification and a checking of the stored information and the first process starts the task.
Patient Management Device For Portably Interfacing With A Plurality Of Implantable Medical Devices And Method Thereof
US Patent:
2007013, Jun 14, 2007
Filed:
Dec 13, 2005
Appl. No.:
11/301980
Inventors:
Phillip Foshee - Woodinville WA, US
Ralph Cardinal - White Bear Lake MN, US
Bryan Buchanan - Gig Harbor WA, US
Matthew Fenske - Glen Ellyn IL, US
Danielle McCulloch - Charlotte NC, US
Brian Robey - Stillwater MN, US
David Johnson - Inver Grove Heights MN, US
Ralph Cardinal - White Bear Lake MN, US
Bryan Buchanan - Gig Harbor WA, US
Matthew Fenske - Glen Ellyn IL, US
Danielle McCulloch - Charlotte NC, US
Brian Robey - Stillwater MN, US
David Johnson - Inver Grove Heights MN, US
International Classification:
A61N 1/36
US Classification:
607031000, 607032000, 607060000
Abstract:
A patient management device for portably interfacing with a plurality of implantable medical devices and method thereof is presented. Permission to interrogate one or more implantable medical devices is authenticated. Patient device data is individually exchanged through interrogation of at least one authenticated implantable medical device through short range telemetry. External device data is exchanged via communication with at least one external device through long range telemetry. At least one of the patient device and external device data is maintained contemporaneously to execution of operations to perform one or more of relay, processing, and outputting of the patient device and external device data subsequent to the interrogation of the implantable medical device.
Hardware/Software Lock For Secure Linkage Between Algorithmic Decision Process And Critical System Function Execution
US Patent:
7110814, Sep 19, 2006
Filed:
Aug 25, 2003
Appl. No.:
10/647838
Inventors:
Joseph M. Bocek - Seattle WA, US
Bryan Buchanan - Gig Harbor WA, US
Tony Harrington - Bellevue WA, US
Bryan Buchanan - Gig Harbor WA, US
Tony Harrington - Bellevue WA, US
Assignee:
Cardiac Pacemakers, Inc. - St. Paul MN
International Classification:
A61N 1/362
US Classification:
607 9, 607 59
Abstract:
An improved protection mechanism to protect from unintended execution of critical tasks operates, in one example embodiment, by receiving a request to start a task by a first process. The first process informs a second process of running an algorithm to verify the legitimacy of the received request to determine the need to start the task. The second process stores the information regarding the starting the algorithm by the first process. The first process runs the algorithm to verify the legitimacy of the received request, and conveys an outcome of the verification to the second process. The second process enables the start of the task by the first process based on the outcome of the verification and a checking of the stored information and the first process starts the task.