Brent Wilford Quist

58923802, Apr 6, 1999

Aug 4, 1997

8/905624

Brent W. Quist - Mesa AZ

Motorola, Inc. - Schaumberg IL

H03K 3017

327172

A phase-frequency detector (12) is configured for operating at a high frequency. A transition of a clock signal (REF CLK) is detected by a first latch (52) and a signal UP is generated. A transition of a feedback signal (FBK) is detected by a second latch (56) and a signal DOWN is generated. An logic circuit (64) detects the signals UP and the DOWN and generates a reset signal (RESET). A pulse-width of the reset signal (RESET) is controlled and limited by the logic circuit (64) to provide a faster response time for setting the first and second latches (52 and 56) to a state that allows detection of the phase and frequency differences between the clock signal (REF CLK) and the feedback signal (FBK).

20170123486, May 4, 2017

Nov 2, 2016

15/341794

- Salt Lake City UT, US
Paul Vincent - Kaysville UT, US
Brent Quist - Bountiful UT, US
Wayne Liu - Sandy UT, US
Eric Gibson - Lehi UT, US

G06F 1/32
G06F 3/041
G06F 3/044

A system and method for reducing the power required for a capacitive sensing measurement and for simplifying a sample capacitor signal offset while reducing charge injection during synchronous rectification by enabling the touch sensor to begin a measurement cycle at an arbitrary voltage rather than forcing the touch sensor to have a precise known voltage.

20170123578, May 4, 2017

Oct 31, 2016

15/339092

- Salt Lake City UT, US
Keith L. Paulsen - Centerville UT, US
Brent Quist - Bountiful UT, US
Paul Vincent - Kaysville UT, US

G06F 3/041
G06F 3/044

A system and method for injecting a signal on a sense electrode in order to increase the security of the touch sensor if signals are capable of being intercepted by a probe, the injected signals being capable of creating a signal on the sense electrode that replicates the signal of an actual finger, creating a signal on a sense electrode that is equal to but opposite of an actual finger in order to cancel out the signal from the actual finger and therefore hide its presence, and create a pseudo random signal on sense electrodes so that it is difficult to correlate measurable signals on sense electrodes to actual finger position.