Peter W Jungwirth

US Patent:

6396170, May 28, 2002

Filed:

Mar 29, 2000

Appl. No.:

09/537421

Inventors:

Derek Laufenberg - Wauwatosa WI
Peter Jungwirth - Wisconsin Rapids WI
Joseph R. Wade - Mindoro WI

Assignee:

Powerware Corporation - Raleigh NC

International Classification:

H02J 104

US Classification:

307 64, 307 43, 307 52, 307 82, 363 71, 363142, 363 65

Abstract:

Presented is a modular uninterruptible power supply system utilizing common power modules, and providing redundant coordinated control thereof. The system and method of the instant invention provides identical control logic within each of the individual power modules, thus dispensing with the requirement for a separate control module to control and coordinate the operating modes and parameters of the UPS system. A system is presented whereby a virtual master is established through an arbitration scheme at initialization of the UPS system. The master then assigns a virtual vice master to provide the redundant back up control should the virtual master no longer be able to perform its functions. Nearly simultaneous control of operational mode and state change functions is accomplished through a coordinated communications system including a high-speed communications bus and digital control logic lines. Also provided is a mechanism for removal of the virtual master from its duties upon the detection of a problem that is not detected by the virtual master itself.

US Patent:

D541290, Apr 24, 2007

Filed:

Jan 25, 2006

Appl. No.:

29/252631

Inventors:

Mark R. Swanson - Wisconsin Rapids WI, US
Peter William Jungwirth - Wisconsin Rapids WI, US
Jason Boon - Sun Prairie WI, US
John W. Grosz - Waupun WI, US

Assignee:

Renaissance Learning, Inc. - Wisconsin Rapids WI

International Classification:

1402

US Classification:

D14455

US Patent:

D552606, Oct 9, 2007

Filed:

Jan 25, 2006

Appl. No.:

29/252642

Inventors:

Mark R. Swanson - Wisconsin Rapids WI, US
Peter William Jungwirth - Wisconsin Rapids WI, US
Jason Boon - Sun Prairie WI, US
John W. Grosz - Waupun WI, US

Assignee:

Renaissance Learning, Inc. - Wisconsin Rapids WI

International Classification:

1402

US Classification:

D14346

US Patent:

D566115, Apr 8, 2008

Filed:

Jan 25, 2006

Appl. No.:

29/252646

Inventors:

Mark R. Swanson - Wisconsin Rapids WI, US
Peter William Jungwirth - Wisconsin Rapids WI, US
Christina Miller - Sun Prairie WI, US
John W. Grosz - Waupun WI, US

Assignee:

Renaissance Learning, Inc. - Wisconsin Rapids WI

International Classification:

1402

US Classification:

D14358, D14240

US Patent:

7502855, Mar 10, 2009

Filed:

Jun 26, 2006

Appl. No.:

11/474906

Inventors:

Mark R. Swanson - Wisconsin Rapids WI, US
Peter William Jungwirth - Wisconsin Rapids WI, US
Dean A. Goodmanson - Port Edwards WI, US

Assignee:

Renaissance Learning, Inc. - Wisconsin Rapids WI

International Classification:

G06F 15/173

US Classification:

709225, 709219, 709229

Abstract:

A wireless classroom response system includes multiple wireless networks, each serving a different classroom. Each network has a computer located proximate to the classroom that the wireless network serves. The computer executes a communications server and an application program, wherein the application program facilitates classroom activities. The system also includes a wireless access point located proximate to the classroom. The wireless access point is communicatively linked to the computer. The system also has a plurality of handheld units. Each handheld unit displays, to a user, a list of the networks, and receives a user input indicating which one of the wireless networks the handheld unit should connect. The handheld unit connects to the chosen wireless network, thereby becoming a node in the wireless network. It also transmits data to the application program via the wireless access point and the communications server.

US Patent:

20060293048, Dec 28, 2006

Filed:

Jun 27, 2006

Appl. No.:

11/476230

Inventors:

Mark Swanson - Wisconsin Rapids WI, US
William Moss - Wisconsin Rapids WI, US
Peter Jungwirth - Wisconsin Rapids WI, US
Dean Goodmanson - Port Edwards WI, US
Richard Dreher - Wausau WI, US
John Hickey - Wisconsin Rapids WI, US

Assignee:

Renaissance Learning, Inc. - Wisconsin Rapids WI

International Classification:

H04Q 7/20

US Classification:

455426100, 455422100

Abstract:

A wireless classroom response system wireless network is located proximate to a classroom, a base station that coordinates the activities of the wireless network, and a plurality of handheld units. Each handheld unit is associated with an attendee of a class (either on a long-term or “owned basis, or on an ad-hoc or “shared” basis). Each handheld unit performs a discovery process that includes the steps of randomly choosing a wireless channel, attempting to discover the presence of the wireless network on the channel, and repeating these two steps if no wireless network is discovered.

US Patent:

20060294552, Dec 28, 2006

Filed:

Jun 26, 2006

Appl. No.:

11/474838

Inventors:

Mark Swanson - Wisconsin Rapids WI, US
William Moss - Wisconsin Rapids WI, US
Peter Jungwirth - Wisconsin Rapids WI, US

Assignee:

Renaissance Learning, Inc. - Wisconsin Rapids WI

International Classification:

H04N 5/44
G06F 13/00
H04N 7/18
G06F 3/00
H04N 5/445

US Classification:

725080000, 725081000, 348734000, 725039000

Abstract:

An audience response system is provided. In various implementations, the response system includes a base station, handheld units, and a wireless network. The response system may have a prompted mode and an unprompted mode of operation. In the prompted mode of operation, the base station transmits questions to the handheld units over the wireless network. The questions are displayed to users on their handheld units. The users respond to the question, and their responses are transmitted to the base station via the wireless network. In the unprompted mode, answer templates are transmitted and displayed to the users, with the actual questions being conveyed in some other manner, such as verbally or by written handout.

US Patent:

20090232419, Sep 17, 2009

Filed:

Mar 11, 2009

Appl. No.:

12/401988

Inventors:

Mark R. SWANSON - Wisconsin Rapids WI, US
Donald K. Zahrte - Necedah WI, US
Peter William Jungwirth - Wisconsin Rapids WI, US

Assignee:

Renaissance Learning, Inc. - Wisconsin Rapids WI

International Classification:

G06K 9/20

US Classification:

382321

Abstract:

A marking detection system detects markings on a printed medium, such as pencil markings in bubbles on the printed medium. The marking detection system includes a circuit board with a plurality of components thereon, including an optical subsystem and an electronic subsystem including circuitry. The marking detection system further includes a shroud for optically isolating a plurality of emitting and detecting elements of the system.