Christopher S Saunders

US Patent:

7898236, Mar 1, 2011

Filed:

Aug 15, 2008

Appl. No.:

12/192234

Inventors:

Michael J. Houston - Cary NC, US
Christopher S. Saunders - Raleigh NC, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

G05F 1/40

US Classification:

323284, 323271

Abstract:

A method for operating a voltage regulator controller, for use in a voltage regulator including coupled inductors, is provided as follows. A first signal is generated for driving a first switch of the voltage regulator. A second signal is generated driving a first switch of the voltage regulator. The voltage regulator determines whether a light-load condition exists. Upon determining the existence of a light-load condition, adjusting the phase difference between said first and second signals so that the first and second signals are approximately in-phase.

US Patent:

8125207, Feb 28, 2012

Filed:

Nov 23, 2010

Appl. No.:

12/952954

Inventors:

Michael J. Houston - Cary NC, US
Christopher S. Saunders - Raleigh NC, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

G05F 1/40
G05F 1/575

US Classification:

323284, 323212, 323237, 323271

Abstract:

A method for operating a voltage regulator controller, for use in a voltage regulator including coupled inductors, is provided as follows. A first signal is generated for driving a first switch of the voltage regulator. A second signal is generated driving a first switch of the voltage regulator. The voltage regulator determines whether a light-load condition exists. Upon determining the existence of a light-load condition, adjusting the phase difference between said first and second signals so that the first and second signals are approximately in-phase.

US Patent:

20220402599, Dec 22, 2022

Filed:

Aug 25, 2022

Appl. No.:

17/895739

Inventors:

- Palo Alto CA, US
Christopher Scott Saunders - San Jose CA, US

International Classification:

B64C 27/00
B64C 27/08
B64D 31/10
B64D 45/00
B64D 17/80

Abstract:

A commanded control signal is compared against an adaptive control signal in order to detect a rotor strike by a rotor included in an aircraft, wherein the adaptive control signal is associated with controlling the rotor and the adaptive control signal varies based at least in part on the commanded control signal and state information associated with the rotor. In response to detecting the rotor strike, a control signal to the rotor is adjusted in order to reduce a striking force associated with the rotor.

US Patent:

20210362868, Nov 25, 2021

Filed:

Aug 5, 2021

Appl. No.:

17/395086

Inventors:

- Palo Alto CA, US
Christopher Scott Saunders - San Jose CA, US
Benjamin Otto Berry - Mountain View CA, US

International Classification:

B64D 35/06
B64C 11/46
B64D 27/24

Abstract:

A first propeller has a shorter blade length and a lower inertia than a second propeller. An electromagnetic field emitter is coupled to one of the first propeller or the second propeller and an electromagnetic field receptor is coupled to the other one that is not coupled to the electromagnetic field emitter. The electromagnetic field emitter emits an electromagnetic field. In response to the electromagnetic field: the electromagnetic field receptor and its coupled propeller rotate in a first rotational direction; and the electromagnetic field emitter and its coupled propeller rotate in a second and counter-rotational direction. In response to a second electromagnetic field associated with increasing torque: the first propeller increases and subsequently decreases its rotational speed; and the second propeller increases its rotational speed at a slower rate than the increase in the rotational speed of the first propeller.

US Patent:

20210221527, Jul 22, 2021

Filed:

Jan 15, 2021

Appl. No.:

17/150332

Inventors:

- Palo Alto CA, US
Christopher Scott Saunders - San Jose CA, US
Benjamin Otto Berry - Mountain View CA, US

International Classification:

B64D 35/06
B64D 27/24
B64C 11/46

Abstract:

A system which includes a first propeller, a second propeller, an electromagnetic field emitter that is coupled to the first propeller, and an electromagnetic field receptor that is coupled to the second propeller. The electromagnetic field emitter emits an electromagnetic field and in response to the electromagnetic field, the electromagnetic field receptor and the second propeller rotate in a first rotational direction and the electromagnetic field emitter and the first propeller rotate in a second and counter-rotational direction.

US Patent:

20210061110, Mar 4, 2021

Filed:

Jun 17, 2020

Appl. No.:

16/904335

Inventors:

- Palo Alto CA, US
Christopher Scott Saunders - San Jose CA, US
Derek Wong - Fremont CA, US

International Classification:

B60L 50/60
H02J 7/00
B64D 27/24

Abstract:

A configuration instruction associated with configuring a plurality of batteries which supply power to a plurality of motors in a vehicle is received. The batteries are configuring as specified by the configuration instruction, where the batteries are able to be configured in a plurality of configurations, including: a first configuration where at least some of the batteries are electrically connected together in parallel and a second configuration where at least some of the batteries are electrically connected together in series.

US Patent:

20210001978, Jan 7, 2021

Filed:

Sep 16, 2020

Appl. No.:

17/022990

Inventors:

- Palo Alto CA, US
Christopher Scott Saunders - San Jose CA, US

International Classification:

B64C 27/00
B64C 27/08
B64D 31/10
B64D 45/00
B64D 17/80

Abstract:

A commanded control signal is compared against an adaptive control signal in order to detect a rotor strike by a rotor included in an aircraft, wherein the adaptive control signal is associated with controlling the rotor and the adaptive control signal varies based at least in part on the commanded control signal and state information associated with the rotor. In response to detecting the rotor strike, a control signal to the rotor is adjusted in order to reduce a striking force associated with the rotor.

US Patent:

20200072975, Mar 5, 2020

Filed:

Oct 24, 2019

Appl. No.:

16/663092

Inventors:

- Palo Alto CA, US
Christopher Scott Saunders - San Jose CA, US

International Classification:

G01S 15/46
G01S 15/08
G01S 7/526
G05D 1/10
G01S 7/524

Abstract:

A distance determination system is disclosed. In various embodiments, the system includes a transmitter configured to transmit a first pulse at a first frequency and a second pulse at a second frequency; a receiver configured to receive audio signals; and a processor coupled to the receiver and configured to detect whether an intermodulation product of the first pulse and the second pulse is present and above a threshold amplitude in an audio signal received by the receiver; and determine, based at least in part on whether the intermodulation product of the first pulse and the second pulse is detected to be present and above a threshold amplitude, whether a distance to a surface is greater than a distance corresponding to the first pulse and the second pulse.