Steven E Clements

US Patent:

7863958, Jan 4, 2011

Filed:

Dec 31, 2008

Appl. No.:

12/347469

Inventors:

David William Boerstler - Round Rock TX, US
Steven Mark Clements - Raleigh NC, US
Jieming Qi - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H03K 3/017

US Classification:

327175

Abstract:

A clock signal duty cycle adjustment circuit includes a duty cycle correction circuit that receives a clock input signal that may need duty cycle correction. The duty cycle correction circuit may derive first and second differential clock signals from the clock input signal. The first and second differential clock signals may exhibit respective voltage offsets. The duty cycle correction circuit includes a voltage offset shift circuit that may shift the voltage offset that one of the first and second differential clock signals exhibits to adjust the effective duty cycle of a clock output signal. The duty cycle adjustment circuit derives the clock output signal from the voltage offset adjusted first and second differential clock signals in response to a duty cycle error signal.

US Patent:

20200370732, Nov 26, 2020

Filed:

May 20, 2019

Appl. No.:

16/417401

Inventors:

- Eindhoven, NL
Rusty B. Flippo - Newnan GA, US
Steven Russell Clements - Atlanta GA, US

International Classification:

F21V 17/16

Abstract:

A luminaire includes a back plate and a wire cover. The back plate includes a first tab that defines a tab receiving cavity. Further, the first tab includes a first mating feature formed therein. The wire cover includes an inner surface that defines an electronics cavity, an outer surface that defines a light source mounting platform, and a second tab. The second tab includes a second mating feature that is complementary to the first mating feature. The second tab of the wire cover is disposed in the tab receiving cavity defined by the first tab of the back plate to removably couple the wire cover to the back plate. Further, the second mating feature of the second tab engages the first mating feature of the first tab to releasably lock the wire cover to the back plate.