Maxim Integrated Products, Inc.

Apple Inc.

Cypress Semiconductor Corporation

Anand K Chamakura

Christopher Francis Edwards

Nicole Dorene Kerness

David Skurnik

Nevzat Akin Kestelli

Sunny Kweisun Hsu

Pirooz Parvarandeh

Ilya K Veygman

Dong Zheng

Giovanni Gozzini

Mohammad Yeke Yazdandoost

Roderick Brian Hogan

Lun Tsai

Meng-Huan Ho

Niva A Ran

Volodymyr Borshch

Akshay Bhat

Kymberly Tennille Christman

Arkadii V Samoilov

Mahesh B Chappalli

Serhan O Isikman

Jeffery Scott Hunt

Jerome Chandra Bhat

Kenneth John Vampola

Joy T Jones

Kumar Nagarajan

George M Ansel

Guocheng Shao

Phillip J Benzel

Christopher M Dodson

Dan G Allen

Stephen N Sweet

Ali Motamed

Steven N Hanna

Aditya B Nayak

Michael D Eaton

Reza Tafteh

Francesco LaRocca

Mieczyslaw M Dabrowski

An input component for an electronic device configured to detect rotational and/or translational movement of a surface. In an implementation, the input component includes a movable input member with a shaft with a pattern disposed on its surface. A light-emitting element is positioned to direct light towards this pattern, a portion of which is thereafter reflected back. An imaging system is situated to capture the reflected light. The imaging system includes an array of single-photon avalanche diodes (SPADs) operating in Geiger mode. This array is coupled with a counter circuit, which increments one or more values based on the SPAD array output. These values and corresponding SPAD locations within the array can be correlated to the spatial phase of the reflected light, which in turn can be converted to rotational or axial displacement of the movable input member.

Single photon avalanche diodes for rotational and translational input detection

An electronic display may include an ambient light sensor (ALS) located beneath an active area to sense ambient light above the active area. The ALS may have multiple response channels to perform fast sensing integration, which is synchronized with blanking periods of a pixel on the active area. An emission mask and a heat map may be generated for the ALS and used to generate a calibrated heat map for the ALS. The calibrated heat map of the ALS is used with display content to calculate a crosstalk compensation for the ALS.

System for ambient light sensing or compensation

An electronic device may have an ambient light sensor for gathering ambient light measurements. The ambient light sensor may include multiple channels for measuring different wavelengths of ambient light. An additional, modified, channel may be formed in the ambient light sensor to measure radio-frequency signals that may interfere with the ambient light measurements due to electromagnetic interference. Alternatively, circuitry separate from the ambient light sensor, such as an antenna, may measure the radio-frequency signals. If the radio-frequency signals exceed a threshold, the ambient light sensor measurements taken in the presence of the radio-frequency signals may be discarded or corrected. If the radio-frequency signals do not exceed a threshold, the ambient light sensor measurements may be kept. Therefore, the ambient light measurements that are kept and relied upon by the electronic device may be free from electromagnetic interference.

Electronic devices with ambient light sensor radio-frequency interference correction

Systems and methods for detection of incident light are described. An optical imaging sensor is positioned at least partially within an active display area of a display and is configured to detect and characterize one or more properties of light incident to the active display area of the display.

Sensing system for detection of light incident to a light emitting layer of an electronic device display

An electronic device may have a display with an array of pixels configured to display images for a user. The electronic device may have an ambient light sensor for gathering ambient light information. The ambient light sensor may be at least partially covered by the display. The ambient light sensor may be switched into use during blanking periods when a portion of the display overlapping with the display is temporarily turned off. The ambient light sensor may include a photodetector, a first stage with an amplifier, first and second capacitors selectively coupled across the amplifier, and a second accumulation stage. During blanking time, the first capacitor may integrate photodetector current. During non-blanking, the charge stored in the first capacitor may be transferred to the second accumulation stage while the second capacitor applies an offset voltage to the photodetector to prevent undesired charge injection into the photodetector.

Electronic devices having ambient light sensors with hold function

A gesture sensing device includes a multiple segmented photo sensor and a control circuit for processing sensed voltages output from the sensor. The control circuit processes the sensed voltage signals to determine target motion relative to the segmented photo sensor. The control circuit includes an algorithm configured to calculate one of more differential analog signals using the sensed voltage signals output from the segmented photo sensors. A vector is determined according to the calculated differential analog signals, the vector is used to determine a direction and/or velocity of the target motion.

Method for detecting gestures using a multi-segment photodiode and one or fewer illumination sources

A gesture sensing device includes a single light source and a multiple segmented single photo sensor, or an array of photo sensors, collectively referred to herein as segmented photo sensors. A light modifying structure relays reflected light from the light source onto different segments of the segmented photo sensors. The light modifying structure can be an optical lens structure or a mechanical structure. The different segments of the photo sensor sense reflected light and output corresponding sensed voltage signals. A control circuit receives and processes the sensed voltage signals to determine target motion relative to the segmented photo sensor.

Optical gesture sensor having a light modifying structure

Aspects of the disclosure pertain to a system and method for reducing ambient light sensitivity of Infrared (IR) detectors. Optical filter(s) (e.g., absorption filter(s), interference filter(s)) placed over a sensor of the IR detector (e.g., gesture sensor) absorb or reflect visible light, while passing specific IR wavelengths, for promoting the reduced ambient light sensitivity of the IR detector.

System and method for reducing ambient light sensitivity of infrared (IR) detectors

A micro electrochemical cell, a micro electrochemical gas sensor, and a method for fabrication of the micro electrochemical cell are described that include a photopatternable glass substrate, two or more embedded electrodes integrated with through-glass vias, and a gas-permeable membrane lid. In an implementation, a micro electrochemical cell includes a photopatternable glass substrate; at least one recess formed in the photopatternable glass substrate; a plurality of through-glass vias formed in the photopatternable glass substrate, at least one electrolyte disposed in the at least one recess; a wicking layer disposed over the at least one electrolyte; and a lid assembly.

Photopatternable glass micro electrochemical cell and method

A wafer level optical device, system, and method are described that include a substrate, an electronic device disposed on the substrate, an illumination source disposed on the electronic device, an enclosure disposed on the substrate, where the enclosure includes at least one optical surface and covers the electronic device and the illumination source, and at least one solder ball disposed on a side of the substrate distal from the electronic device. In implementations, a process for using the wafer level optical device and lens-integrated package system that employ the techniques of the present disclosure includes receiving a substrate, placing an electronic device on the substrate, placing an illumination source on the electronic device, and placing an enclosure on the substrate, where the enclosure covers the electronic device and the illumination source, and the enclosure and a wall structure form a first compartment and a second compartment.

Wafer level lens in package

Semiconductor devices are described that are configured to have a state of operation defined by a connection between at least one inner bump assembly and a selected outer bump assembly. In an implementation, the semiconductor device, which may be a wafer-level (chip-scale) package semiconductor device, includes an integrated circuit chip, a plurality of outer bump assemblies disposed on the chip, and one or more inner bump assemblies disposed on the chip so that the inner bump assemblies are at least partially surrounded by the outer bump assemblies. At least one of the inner bump assemblies is configured to be connected to a selected outer bump assembly to cause the integrated circuit chip to have a desired state of operation.

Semiconductor device having mode of operation defined by inner bump assembly connection

Techniques are described to mirror currents and subtract currents accurately. In an implementation, a circuit includes a first current source coupled to a first node to provide a current IPDand a current mirror coupled to the first node through a first switch Tto provide a current IREF. In a closed configuration, the current IREFflows from the current mirror into the first node. A sigma delta modulator controls the switch Tsuch that over a period of time an average current flowing from the current mirror into the first node is equal to the current IPDflowing out of the first node. The sigma delta modulator generates a digital output to control switch Tto allow a current IREFinto a second node, thus subtracting a portion of a current IPDat the second node over a period of time.

Current mirror and current cancellation circuit

Optical gesture sensor using a single illumination source

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San Jose, CA, United States of America

Anand K Chamakura