William M Chamberlain

US Patent:

20030208307, Nov 6, 2003

Filed:

Jan 8, 2003

Appl. No.:

10/338806

Inventors:

Anthony Mirabelli - Arlington Heights IL, US
William Chamberlain - Palatine IL, US
Philip Thistlethwaite - Des Plaines IL, US
Vincent Formanek - Hillside IL, US

International Classification:

G06F007/00

US Classification:

701/001000

Abstract:

An electrically powered vehicular device, such as a police radar detector, having an automatic reduced power feature, is disclosed.

US Patent:

D442946, May 29, 2001

Filed:

Apr 4, 2000

Appl. No.:

D/121287

Inventors:

John Phillip Pohl - Lakes Forest IL
Robert Edward Mudra - Glenview IL
William Chamberlain - Palatine IL
Jeffery Patrick Heuel - Elmhurst IL

Assignee:

Cobra Electronics Corporation - Chicago IL

International Classification:

1401

US Classification:

D14225

US Patent:

51630257, Nov 10, 1992

Filed:

Nov 16, 1990

Appl. No.:

7/614818

Inventors:

William Chamberlain - Lombard IL

Assignee:

Zenith Electronics Corporation - Glenview IL

International Classification:

G11C 1300

US Classification:

365226

Abstract:

A reset control circuit for an EAROM includes a zener diode coupled across the input of a voltage regulator which supplies operating voltage for the EAROM. The breakdown voltage of the zener diode is greater than the output voltage of the regulator. During turn-on, the reset voltage, which is taken from the zener diode, is held below the low point of its active region until the operating voltage has been established. During turn-off, the operating voltage is maintained until the reset voltage has become inactive, i. e. has dropped below its reset low voltage. The sequencing of operating voltage and reset voltage protects the data in the EAROM.

US Patent:

47164638, Dec 29, 1987

Filed:

Oct 24, 1986

Appl. No.:

6/922640

Inventors:

Carl W. Stacy - Elmwood Park IL
William Chamberlain - Lombard IL

Assignee:

Zenith Electronics Corporation - Glenview IL

International Classification:

H04N 563

US Classification:

358190

Abstract:

A low voltage sense circuit for a microprocessor controlled television receiver includes a 5 volt regulator having a large electrolytic capacitor coupled across its output, which is the power input terminal of a microprocessor. The microprocessor includes a sleep terminal for initiating operation in a minimum power consumption mode. The 12 volt input to the 5 volt regulator is coupled to the bias circuit of a PNP transistor that includes a Zener diode and which is in saturation as long as the input voltage to the 5 volt regulator is greater than the breakdown voltage of the Zener diode. The collector output of the transistor is connected to the sleep terminal of the microprocessor. When the transistor is driven out of saturation, an appropriate voltage change is developed at the sleep terminal for causing the microprocessor to switch to its low power sleep mode.

US Patent:

D4461959, Aug 7, 2001

Filed:

Aug 31, 2000

Appl. No.:

D/128881

Inventors:

William Chamberlain - Palatine IL
Steven P. Fragassi - Winthrop Harbor IL
Stephen J. Gaynes - Wonder Lake IL
Anthony A. Mirabelli - Arlington Heights IL
Erin M. Napolitano - Chicago IL
John C. Whiteman - Forest Park IL

Assignee:

Cobra Electronics Corporaton - Chicago IL

International Classification:

1403

US Classification:

D14137

US Patent:

46009477, Jul 15, 1986

Filed:

Feb 14, 1984

Appl. No.:

6/580049

Inventors:

William Chamberlain - Lombard IL
John C. Weigand - Oak Park IL

Assignee:

Zenith Electronics Corporation - Glenview IL

International Classification:

H04N 324

US Classification:

358165

Abstract:

A television receiver includes an integrated circuit audio amplifier for having an inverting terminal, a noninverting terminal and an output terminal connected through a feedback resistor back to the inverting terminal. A first capacitor is coupled to the noninverting terminal and a second capacitor is coupled to the inverting terminal. A voltage divider normally establishes the first capacitor at a given potential. A source of regulated potential less than the given potential is coupled through a pair of series connected diodes to the first capacitor and through a single diode to the second capacitor, thus establishing two separate charging paths for said capacitors with the initial time constant of the path coupled to the noninverting terminal being longer than the initial time constant of the path coupled to the inverting terminal.

US Patent:

D4461967, Aug 7, 2001

Filed:

Aug 31, 2000

Appl. No.:

D/128888

Inventors:

William Chamberlain - Palatine IL
Steven P. Fragassi - Winthrop Harbor IL
Stephen J. Gaynes - Wonder Lake IL
Anthony A. Mirabelli - Arlington Heights IL
Erin M. Napolitano - Chicago IL
John C. Whiteman - Forest Park IL

Assignee:

Cobra Electronics Corporation - Chicago IL

International Classification:

1403

US Classification:

D14137

Author:

William Chamberlain

ISBN #:

0345305515

Author:

William Chamberlain

ISBN #:

0801024382

Author:

William Henry Chamberlain

ISBN #:

0831071060