Texas Instruments Corporation

Vital Art & Science Incorporated

Other

Intel Corporation

North American Philips Corporation

William Robert Krenik

Louis J Izzi

Stuart M Jacobsen

Edgar Rolando Zuniga-Ortiz

Carl Michael Panasik

Byron Neville Burgess

Patrick Peter Siniscalchi

Yi-Zhong Wang

Wei-chan Hsu

Anand Ganesh Dabak

Henry T Yung

Steven Monroe Penn

Leonardo William Estevez

Sridhar Ramaswamy

Steven Edward Smith

Rolf Lagerquist

Ariel Dario Moctezuma

Norman L Culp

Shaibal Barua

Yoram Solomon

Chenwei J Yin

Michael Bartlett

Dennis V Hahn

Jose S Vasquez

Mark Appleton

Baher S Haroun

Srinath Hosur

Karl M Guttag

Henry Litzmann Edwards

Vadim Valerievich Ivanov

Richard D Simpson

Deric Wayne Waters

Rajarshi Mukhopadhyay

Matthew Brendan Shoemake

Gary Franklin Chard

Kenneth James Maggio

Jeffrey L Nye

Davy H Choi

James R Hellums

James F Hollander

Jerry R Van Aken

Roy Clifton Jones, Iii

Marius Vicentiu Dina

Sami Kiriaki

Kuok Y Ling

Hasibur Rahman

David R Cotton

James E Chloupek

William G Miller

Michael G Machado

Keliu Shu

Edward N Jeffrey

Carrell R Killebrew, Jr

Yanqing Li

Steven C Brummette

Michael D Aragon

Patrick G O'Farrell

Mike Asal

Richard C Nail

Udumbara Wijesinghe

Matthew R Webb

Mike Bartlett

James F Asbury

Chih-Hung Lin

Vivek J Pawar

An integrated circuit includes a semiconductor substrate with a semiconductor surface layer having a first conductivity type and a top surface, a diode including a buried region within the surface layer, the buried region having an opposite second conductivity type and being spaced apart from the top surface by a portion of the semiconductor surface layer having the first conductivity type, a dielectric layer over the surface layer, and a metal layer located over the dielectric layer and including an aperture extending laterally in a first direction over the semiconductor surface layer and laterally spaced apart from the buried region in a second direction.

Wide angle optical angle sensor

An inductive current digital-to-analog converter (DAC) includes: a power supply input adapted to be coupled to a power supply; a load terminal adapted to be coupled to a load; an inductor between the power supply input and the load terminal; and inductor current control circuitry. The inductor current control circuitry has: a sense signal input configured to receive a sense signal representative of the inductor current; a control code input configured to receive a control code; a set of switches having respective control terminals; and a set of control circuit outputs coupled to the respective control terminals of the set of switches. The inductor current control circuitry is configured to adjust control signals provided to the set of control circuit outputs based on the sense signal and the control code.

Inductive current digital-to-analog converter (DAC) and related control options

A method of forming a resonator includes forming top and bottom dielectric structures over a substrate. A piezoelectric layer is formed between the top and bottom dielectric structures. A bottom electrode is formed between the piezoelectric layer and the bottom dielectric structure, and a top electrode is formed between the piezoelectric layer and the top dielectric structure. A metal layer is formed over the top dielectric structure and is patterned, thereby forming a first contact pad making electrical contact to the top electrode, a second contact pad making electrical contact with the bottom electrode, and a mass bias located over the top dielectric structure.

Method of forming an integrated resonator with a mass bias

A circuit includes a phase-locked loop having a phase-locked loop output to provide a first phase signal and a second phase signal phase delayed with respect to the first phase signal. The circuit further includes a digital circuit having a digital circuit input and an output. The digital circuit input couples to the phase-locked loop output. On the digital circuit output, the digital circuit is configured to provide a first digital-to-analog converter (DAC) enable signal and a second DAC enable signal. The circuit also includes first and second DACs. The first DAC is coupled to the digital circuit. The first DAC has a first enable input coupled to the digital circuit output to receive the first DAC enable signal. The second DAC is coupled to the digital circuit. The second DAC has a second enable input coupled to the digital circuit output to receive the second DAC enable signal.

Waveform synthesizer using multiple digital-to-analog converters

A system includes an inductor, and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node, wherein the second switch comprises a self-operated arrangement. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches.

Switching converter with a self-operated negative boost switch

A resonant line driver for driving capacitive-loads includes a driver series-coupled to an energy transfer inductor L, driving signal energy at a signal frequency through L. A switch array is controlled to switch Lbetween multiple electrodes according to a switching sequence, each electrode characterized by a load capacitance CL. Land CL form a resonator circuit in which signal energy cycles between Land CL at the signal frequency. The switch array switches Lbetween a current electrode and a next electrode at a zero_crossing when signal energy in the energy transfer inductor is at a maximum and signal energy in the load capacitance of the current electrode is at a minimum. An amplitude control loop controls signal energy delivered to the LCL resonator circuit, and a frequency control loop controls signal frequency/phase. In an example application, the resonant driver provides line drive for a mutual capacitance touch screen.

Resonant line driver including energy transfer inductor for driving capacitive-load lines

A method of forming an integrated resonator apparatus includes depositing alternating dielectric layers of lower and higher acoustic impedance materials over a substrate. First and second resonator electrodes are formed over the alternating dielectric layers, with a piezoelectric layer located between the first and second resonator electrodes. A mass bias is formed over the first and second resonator electrodes. The mass bias, first and second electrodes, piezoelectric layer, and alternating dielectric layers may be encapsulated with a plastic mold fill.

One aspect of the disclosure provides a binocular viewing system. In one embodiment, the binocular viewing system includes a binocular viewer and a computer. The binocular viewer has left and right display screens and a variable focal depth optical subsystem located in an optical path between and separate from the display screens and a user when the user uses the binocular viewer. The computer is configured to provide control signals to the binocular viewer. The control signals are operable to place images on the left and right display screens and vary a focal depth of the variable focal depth optical subsystem. The images include a plurality of objects controlled by the variable focal depth optical subsystem to make at least one of the plurality of objects appear closer to the user and at least one of another of said plurality of objects appear farther away from the user.

Vision measurement and training system and method of operation thereof

A switch monitoring system is provides information on sensor readings and contact closures over a one-wire network or a loop.

Switch monitoring system

A touch screen system includes a capacitive touch screen () including a plurality of row conductors (-) and a column conductor (-). A plurality of contemporaneous orthogonal excitation signals (S(t), S(t) . . . S(t)) are simultaneously driven onto the row conductors, respectively. The capacitively coupled signals on the column conductor may be influenced by a touch () on the capacitive touch screen. Receiver circuitry () includes a sense amplifier (-) coupled to generate an amplifier output signal (r(t)) in response to signals capacitively coupled onto the column conductor. WHT-based circuitry () determines amounts of signal contribution capacitively coupled by each of the excitation signals, respectively, to the amplifier output signal.

Touch-sensitive interface and method using orthogonal signaling

In one aspect, there is provided a handheld vision tester. In this particular embodiment, the handheld vision tester comprises a display, cursor control, and an interface port. The display delivers vision tests to a user. The user interacts with the vision tests by using the display and cursor control. The interface port allows for communication of results of the vision tests from the handheld tester to external devices.

Handheld vision tester and calibration thereof

In one aspect, there is provided an embodiment of a calibration system for use with a vision tester having a display. In this particular embodiment, the calibration system comprises a calibration stand and a reflective surface. The calibration stand is configured to hold the vision tester. The reflective surface is coupled to the calibration stand and is oriented substantially parallel to the display. The calibration stand is configured to hold the display of the vision tester at a fixed distance from the reflective surface.

A semiconductor device comprises a semiconductor wafer; a piezoelectric resonator formed on the wafer, and an active circuit also formed on the wafer. The active circuit (e.g., a frequency divider) is electrically connected to the piezoelectric resonator.

Integrated piezoelectric resonator and additional active circuit

An integrated resonator apparatus includes a piezoelectric resonator and an acoustic Bragg reflector formed adjacent the piezoelectric resonator. The integrated resonator apparatus also includes a mass bias formed over the Bragg reflector on a side of the piezoelectric resonator opposite the piezoelectric resonator.

Integrated resonator with a mass bias

An integrated resonator apparatus comprises a piezoelectric resonator, an acoustic Bragg reflector coupled to the piezoelectric resonator, and a substrate on which the acoustic Bragg reflector is disposed. The apparatus also includes an active heater layer covering the piezoelectric resonator. Heat produced by the active heater layer is controllable by an amount of current provided through the heater layer.

Temperature-controlled integrated piezoelectric resonator apparatus

Growing community of inventors

Garland, TX, United States of America

William Robert Krenik