Brian L Roberts

US Patent:

8179946, May 15, 2012

Filed:

Nov 20, 2008

Appl. No.:

12/274551

Inventors:

Brian Lee Roberts - Boulder CO, US
Kenneth C Grobaski - Lyons CO, US
Anand P Narayan - Lafayette CO, US

Assignee:

Rambus Inc. - Sunnyvale CA

International Classification:

H04B 1/00

US Classification:

375144, 375130

Abstract:

A controller for advanced receivers configures a plurality of advanced receiver modules based on figures of merit computed on the input signal. The controller also selects the appropriate output signal based on figures of merit of either the input or the output signals. The controller decisions can also be made in a bursty manner, where only a subset of the decisions to be made are made at a given time, thereby limiting the processing load of the control processor.

US Patent:

8514910, Aug 20, 2013

Filed:

May 2, 2012

Appl. No.:

13/462238

Inventors:

Brian Lee Roberts - Boulder CO, US
Kenneth C Grobaski - Lyons CO, US
Anand P Narayan - Bangalore, IN

Assignee:

Rambus Inc. - Sunnyvale CA

International Classification:

H04B 1/711

US Classification:

375148

Abstract:

A controller for advanced receivers configures a plurality of advanced receiver modules based on figures of merit computed on the input signal. The controller also selects the appropriate output signal based on figures of merit of either the input or the output signals. The controller decisions can also be made in a bursty manner, where only a subset of the decisions to be made are made at a given time, thereby limiting the processing load of the control processor.

US Patent:

20180342930, Nov 29, 2018

Filed:

May 23, 2018

Appl. No.:

15/987032

Inventors:

Brian Roberts - Evergreen CO, US

International Classification:

H02K 7/18
A63H 33/26
A63H 1/00

Abstract:

A method and apparatus for charging a battery with a finger actuated low mass spinner electromagnetically converts the mechanical spinning energy to the desired battery charging voltage. The charger may be a self-contained portable battery charger unit for use with any of multiple devices containing respective batteries, or it may be a permanent part of such a device. The spinner may be a modified fidget spinner to which a shaft or axle is fixedly attached to rotate about that axis with the spinner and has one or more permanent magnets secured for rotation therewith. Alternatively the spinner may be more like the fidget spinner, without an axle rotating therewith, and having magnets on its rotating arms. In either case, the magnetic fields of the rotating magnets induce voltage in one or more induction coils to generate a battery charging voltage.

US Patent:

20170065328, Mar 9, 2017

Filed:

Nov 17, 2016

Appl. No.:

15/354322

Inventors:

- Mansfield CO, US
JAMES A. GILBERT - BOULDER CO, US
CRAIG A. KELLER - BOULDER CO, US
BRIAN L. ROBERTS - LOVELAND CO, US

International Classification:

A61B 18/12
A61B 18/14

Abstract:

Controlling a level of electrosurgical energy provided to tissue based on detected arcing patterns or impedance changes. The drag force imposed on an electrode or blade of an electrosurgical instrument may be controlled by adjusting the level of electrosurgical energy based on the arcing patterns or impedance changes. The arcing patterns or impedance changes may be detected by sensing and analyzing voltage and/or current waveforms of the electrosurgical energy. The current and/or voltage waveform analysis may involve calculating impedance based on the voltage and current waveforms and calculating changes in impedance over time. The waveform analysis may involve detecting harmonic distortion using FFTs, DFTs, Goertzel filters, polyphase demodulation techniques, and/or bandpass filters. The waveform analysis may involve determining a normalized difference or the average phase difference between the voltage and current waveforms.

US Patent:

20140276753, Sep 18, 2014

Filed:

Feb 18, 2014

Appl. No.:

14/182797

Inventors:

- Mansfield MA, US
JAMES A. GILBERT - BOULDER CO, US
CRAIG A. KELLER - BOULDER CO, US
BRIAN L. ROBERTS - LOVELAND CO, US

Assignee:

COVIDIEN LP - Mansfield MA

International Classification:

A61B 18/18

US Classification:

606 33

Abstract:

The systems and methods of the present disclosure detect arcing patterns or impedance changes and adjust the level of electrosurgical energy provided to tissue based on the detected arcing patterns or impedance changes. In embodiments, the drag force imposed on the electrode or blade of an electrosurgical instrument may be controlled by adjusting the level of electrosurgical energy based on the detected arcing patterns or impedance changes. The arcing patterns or impedance changes may be detected by sensing voltage and/or current waveforms of the electrosurgical energy and analyzing the sensed voltage and/or current waveforms. The current and/or voltage waveform analysis may involve calculating impedance based on the sensed voltage and current waveforms and calculating changes in impedance over time. The waveform analysis may involve detecting harmonic distortion using FFTs, DFTs, Goertzel filters, polyphase demodulation techniques, and/or bandpass filters. The waveform analysis may involve determining a normalized difference or the average phase difference between the voltage and current waveforms.

US Patent:

20140276754, Sep 18, 2014

Filed:

Feb 26, 2014

Appl. No.:

14/190895

Inventors:

- MANSFIELD MA, US
JOSHUA H. JOHNSON - ARVADA CO, US
ERIC J. LARSON - BROOMFIELD CO, US
BRIAN L. ROBERTS - LOVELAND CO, US
BRADDON M. VAN SLYKE - ARVADA CO, US

Assignee:

COVIDIEN LP - MANSFIELD MA

International Classification:

A61B 18/18

US Classification:

606 33

Abstract:

An electrosurgical generator is disclosed. The generator includes an RF output stage configured to generate at least one electrosurgical waveform including a plurality of cycles; at least one sensor coupled to the RF output stage, the at least one sensor configured to measure a voltage and a current of the at least one electrosurgical waveform; and a controller coupled to the at least one sensor and the RF output stage, the controller including a proportional-integral-derivative controller having at least one of voltage limiter or a current limiter, the proportional-integral-derivative controller configured to saturate the RF output stage based on voltage-current characteristics of the RF output stage.